| Observable Entity | NHS Business Definition | 
        | Observable Entity Date | NHS Business Definition | 
        | Observable Entity Time | NHS Business Definition | 
        | OBSERVATION (SNOMED CT EXPRESSION) | Data Element | 
        | OBSERVATION DATE | Data Element | 
        | OBSERVATION DATE (ALANINE AMINOTRANSFERASE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (ALKALINE PHOSPHATASE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (ANTENATAL) (Retired) | Data Element | 
        | OBSERVATION DATE (ASPARTATE AMINOTRANSFERASE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (BILIRUBIN CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (BLOOD GASES TEST) (Retired) | Data Element | 
        | OBSERVATION DATE (BLOOD PRESSURE PRE-HAEMODIALYSIS) (Retired) | Data Element | 
        | OBSERVATION DATE (BLOOD PRESSURE) | Data Element | 
        | OBSERVATION DATE (BLOOD TEST) (Retired) | Data Element | 
        | OBSERVATION DATE (BLOOD UREA CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (BMI) (Retired) | Data Element | 
        | OBSERVATION DATE (BONE AGE) (Retired) | Data Element | 
        | OBSERVATION DATE (BREASTFEEDING STATUS) (Retired) | Data Element | 
        | OBSERVATION DATE (CALCULATED CREATININE CLEARANCE) (Retired) | Data Element | 
        | OBSERVATION DATE (CHEST X-RAY) (Retired) | Data Element | 
        | OBSERVATION DATE (COMBINED KtV) (Retired) | Data Element | 
        | OBSERVATION DATE (CORE ANTIBODY) (Retired) | Data Element | 
        | OBSERVATION DATE (CYCLOSPORINE A 12 HOUR TROUGH LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (CYCLOSPORINE A 2 HOUR LEVEL C2) (Retired) | Data Element | 
        | OBSERVATION DATE (CYTOMEGALOVIRUS POLYMERASE CHAIN REACTION VIRAL LOAD) (Retired) | Data Element | 
        | OBSERVATION DATE (CYTOMEGALOVIRUS TYPE) (Retired) | Data Element | 
        | OBSERVATION DATE (CYTOMEGALOVIRUS) (Retired) | Data Element | 
        | OBSERVATION DATE (DIABETES RELEVANT DIAGNOSIS) (Retired) | Data Element | 
        | OBSERVATION DATE (DIALYSATE 24 HOUR CREATININE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (DIALYSATE 24 HOUR PROTEIN LOSS) (Retired) | Data Element | 
        | OBSERVATION DATE (DIALYSATE 24 HOUR UREA CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (DIALYSATE 24 HOUR VOLUME) (Retired) | Data Element | 
        | OBSERVATION DATE (DIALYSATE KtV) (Retired) | Data Element | 
        | OBSERVATION DATE (ELECTROCARDIOGRAM) (Retired) | Data Element | 
        | OBSERVATION DATE (EPSTEIN-BARR VIRUS) (Retired) | Data Element | 
        | OBSERVATION DATE (ESTIMATED GLOMERULAR FILTRATION RATE) (Retired) | Data Element | 
        | OBSERVATION DATE (EYE EXAMINATION) (Retired) | Data Element | 
        | OBSERVATION DATE (FOOT EXAMINATION) (Retired) | Data Element | 
        | OBSERVATION DATE (FULL BLOOD COUNT TEST) (Retired) | Data Element | 
        | OBSERVATION DATE (GAMMA GLUTAMYL TRANSFERASE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (GRAFT CLINICAL ASSESSMENT) (Retired) | Data Element | 
        | OBSERVATION DATE (HAEMOGLOBIN CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (HbA1c LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (HEAD CIRCUMFERENCE) | Data Element | 
        | OBSERVATION DATE (HEIGHT) | Data Element | 
        | OBSERVATION DATE (HEPATITIS B ANTIBODY) (Retired) | Data Element | 
        | OBSERVATION DATE (HEPATITIS B ANTIGEN) (Retired) | Data Element | 
        | OBSERVATION DATE (HEPATITIS B E ANTIBODY) (Retired) | Data Element | 
        | OBSERVATION DATE (HEPATITIS C ANTIBODY) (Retired) | Data Element | 
        | OBSERVATION DATE (HIGH DENSITY LIPOPROTEIN CHOLESTEROL CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (HUMAN IMMUNODEFICIENCY VIRUS) (Retired) | Data Element | 
        | OBSERVATION DATE (HYPOCHROMIC RED CELLS PERCENTAGE) (Retired) | Data Element | 
        | OBSERVATION DATE (LACTATE DEHYDROGENASE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (LOW DENSITY LIPOPROTEIN CHOLESTEROL CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (MEASURED 24 HOUR CREATININE CLEARANCE) (Retired) | Data Element | 
        | OBSERVATION DATE (MEASURED CREATININE CLEARANCE) (Retired) | Data Element | 
        | OBSERVATION DATE (MEASURED GLOMERULAR FILTRATION RATE) (Retired) | Data Element | 
        | OBSERVATION DATE (MYCOPHENOLIC ACID TROUGH LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (NET DAILY ULTRAFILTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (NORMALISED PROTEIN CATABOLIC RATE) (Retired) | Data Element | 
        | OBSERVATION DATE (NORMALISED WEEKLY PERITONEAL CREATININE CLEARANCE) (Retired) | Data Element | 
        | OBSERVATION DATE (PERITONEAL DIALYSIS TOTAL WEEKLY FLUID VOLUME) (Retired) | Data Element | 
        | OBSERVATION DATE (PERITONEAL EQUILIBRATION TEST) (Retired) | Data Element | 
        | OBSERVATION DATE (PHOSPHATE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (PLATELETS COUNT) (Retired) | Data Element | 
        | OBSERVATION DATE (PROTEIN CREATININE RATIO) (Retired) | Data Element | 
        | OBSERVATION DATE (RED CELL FOLATE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (RESIDUAL RENAL CREATININE CLEARANCE) (Retired) | Data Element | 
        | OBSERVATION DATE (RESIDUAL URINE OUTPUT) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM ALBUMIN CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM ALUMINIUM CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM B12 CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM BICARBONATE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM C-REACTIVE PROTEIN CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM CALCIUM CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM CHOLESTEROL LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM CREATININE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM CREATININE KtV) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM CREATININE LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM FERRITIN CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM INTACT PARATHYROID HORMONE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM MAGNESIUM CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SERUM POTASSIUM CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (SIROLIMUS TROUGH LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (SMOKING STATUS) (Retired) | Data Element | 
        | OBSERVATION DATE (SODIUM CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (STOPPED SMOKING) (Retired) | Data Element | 
        | OBSERVATION DATE (SUBSTANCE MISUSE EVIDENCE) | Data Element | 
        | OBSERVATION DATE (TACROLIMUS 12 HOUR TROUGH LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (TISSUE TYPING DONOR) (Retired) | Data Element | 
        | OBSERVATION DATE (TISSUE TYPING RECIPIENT) (Retired) | Data Element | 
        | OBSERVATION DATE (TOTAL CHOLESTEROL CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (TRANSFERRIN SATURATION) (Retired) | Data Element | 
        | OBSERVATION DATE (TRIGLYCERIDES CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (URIC ACID CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (URINARY ALBUMIN LEVEL) (Retired) | Data Element | 
        | OBSERVATION DATE (URINE CREATININE CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (URINE DIPSTICK TEST BLOOD) (Retired) | Data Element | 
        | OBSERVATION DATE (URINE DIPSTICK TEST PROTEIN) | Data Element | 
        | OBSERVATION DATE (URINE KtV) (Retired) | Data Element | 
        | OBSERVATION DATE (URINE UREA CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (URINE VOLUME) (Retired) | Data Element | 
        | OBSERVATION DATE (VARICELLA-ZOSTER) (Retired) | Data Element | 
        | OBSERVATION DATE (VITAMIN D CONCENTRATION) (Retired) | Data Element | 
        | OBSERVATION DATE (WAIST MEASUREMENT) (Retired) | Data Element | 
        | OBSERVATION DATE (WEIGHT) | Data Element | 
        | OBSERVATION DATE (WHITE BLOOD CELL COUNT) (Retired) | Data Element | 
        | OBSERVATION DATE (WHOLE BLOOD MEAN CELL VOLUME) (Retired) | Data Element | 
        | OBSERVATION DATE (WHOLE BLOOD MEAN CORPUSCULAR HAEMOGLOBIN) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (BLOOD PRESSURE AVERAGED) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (BLOOD PRESSURE HIGHEST) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (BLOOD PRESSURE LOWEST) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (BLOOD PRESSURE) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (FIRST BRAINSTEM DEATH TEST) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (HEART RATE) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (ISOTOPIC GLOMERULAR FILTRATION RATE) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (SECOND BRAINSTEM DEATH TEST) (Retired) | Data Element | 
        | OBSERVATION DATE AND TIME (TEMPERATURE) | Data Element | 
        | OBSERVATION DATE AND TIME (URINE OUTPUT) (Retired) | Data Element | 
        | OBSERVATION MEASUREMENT VALIDATION (Retired) | Class | 
        | OBSERVATION SCHEME IN USE | Attribute | 
        | OBSERVATION SCHEME IN USE | Data Element | 
        | OBSERVATION VALUE | Attribute | 
        | OBSERVATION VALUE | Data Element | 
        | OBSERVATION YEAR AND MONTH (HEAD CIRCUMFERENCE) | Data Element | 
        | OBSERVATION YEAR AND MONTH (HEIGHT) | Data Element | 
        | OBSERVATION YEAR AND MONTH (TEMPERATURE) | Data Element | 
        | OBSERVATION YEAR AND MONTH (WEIGHT) | Data Element | 
        | Obsessive Compulsive Disorder Inventory Questionnaire (Retired) | NHS Business Definition | 
        | OBSESSIVE COMPULSIVE DISORDER INVENTORY SCORE (Retired) | Data Element | 
        | OBSTETRIC DIAGNOSIS | Attribute | 
        | Obstetrician | NHS Business Definition | 
        | OCCUPATION (CPA CARE COORDINATOR) (Retired) | Data Element | 
        | OCCUPATION CODE (Retired) | Class | 
        | OCCUPATION CODE | Data Element | 
        | OCCUPATION CODE (CLINICAL SECOND SPECIALTY) | Data Element | 
        | OCCUPATION CODE (CLINICAL SPECIALTY) | Data Element | 
        | OCCUPATION CODE DESCRIPTION | Data Element | 
        | OCCUPATION MOTHER (SNOMED CT) | Data Element | 
        | Occupational Psychologist | NHS Business Definition | 
        | Occupational Therapist | NHS Business Definition | 
        | OCCUPIED BED DAYS (Retired) | Data Element | 
        | OCCUPIED BED DAYS NHS PATIENTS (Retired) | Attribute | 
        | OCCUPIED BED DAYS NON-NHS PATIENTS (Retired) | Attribute | 
        | OESOPHAGECTOMY ANASTOMOSIS TYPE | Attribute | 
        | OESOPHAGECTOMY ANASTOMOSIS TYPE | Data Element | 
        | OESOPHAGECTOMY NECK DISSECTION INDICATOR | Attribute | 
        | OESOPHAGECTOMY NECK DISSECTION INDICATOR | Data Element | 
        | OESOPHAGECTOMY OESOPHAGEAL CONDUIT NECROSIS FAILURE TYPE | Attribute | 
        | OESOPHAGECTOMY OESOPHAGEAL CONDUIT NECROSIS FAILURE TYPE | Data Element | 
        | OESOPHAGECTOMY OESOPHAGEAL CONDUIT TYPE | Attribute | 
        | OESOPHAGECTOMY OESOPHAGEAL CONDUIT TYPE | Data Element | 
        | OESOPHAGECTOMY SURGICAL APPROACH TYPE | Attribute | 
        | OESOPHAGECTOMY SURGICAL APPROACH TYPE | Data Element | 
        | OESOPHAGOENTERIC LEAK SEVERITY TYPE | Attribute | 
        | OESOPHAGOENTERIC LEAK SEVERITY TYPE | Data Element | 
        | OFFENCE HISTORY INDICATION CODE | Attribute | 
        | OFFENCE HISTORY INDICATION CODE | Data Element | 
        | OFFER OF ADMISSION | Class | 
        | OFFER OF ADMISSION ACCEPTED DATE (Retired) | Attribute | 
        | OFFER OF ADMISSION ACCEPTED OR REFUSED (Retired) | Attribute | 
        | OFFER OF ADMISSION GROUP IDENTIFIER (Retired) | Attribute | 
        | OFFER OF ADMISSION MADE DATE | Attribute | 
        | OFFER OF ADMISSION MADE TIME | Attribute | 
        | OFFER OF ADMISSION VERBAL OR WRITTEN (Retired) | Attribute | 
        | OFFER STATUS (DATING ULTRASOUND SCAN) | Data Element | 
        | OFFER STATUS (GERMLINE GENETIC TEST) | Data Element | 
        | OFFER STATUS (HOLISTIC NEEDS ASSESSMENT) | Data Element | 
        | OFFER STATUS (HUMAN PAPILLOMAVIRUS VACCINATION) | Data Element | 
        | OFFER STATUS (NEWBORN HEARING SCREENING) (Retired) | Data Element | 
        | OFFER STATUS (PERSONALISED CARE AND SUPPORT PLANNING) | Data Element | 
        | OFFER STATUS (REFERRAL TO REGIONAL CLINICAL GENETICS SERVICE) | Data Element | 
        | OFFER STATUS (SCREENING DOWNS SYNDROME) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING MOTHER ASYMPTOMATIC BACTERIURIA) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING MOTHER HAEMOGLOBINOPATHY) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING MOTHER HEPATITIS B) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING MOTHER HUMAN IMMUNODEFICIENCY VIRUS) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING MOTHER RUBELLA SUSCEPTIBILITY) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING MOTHER SYPHILIS) (Retired) | Data Element | 
        | OFFER STATUS (SCREENING NEWBORN PHYSICAL EXAMINATION) (Retired) | Data Element | 
        | OFFER STATUS (ULTRASOUND FETAL ANOMALY SCREENING) (Retired) | Data Element | 
        | OFFERED FOR ADMISSION DATE | Attribute | 
        | OFFERED FOR ADMISSION DATE | Data Element | 
        | OFFERED FOR ADMISSION DATE STATUS (Retired) | Data Element | 
        | Office for National Statistics | NHS Business Definition | 
        | Ofsted | NHS Business Definition | 
        | Old Version 3 ADMITTED PATIENT CARE CDS TYPE - BIRTH EPISODE (Retired) | Data Set | 
        | Old Version 3 ADMITTED PATIENT CARE CDS TYPE - DELIVERY EPISODE (Retired) | Data Set | 
        | Old Version 3 ADMITTED PATIENT CARE CDS TYPE - GENERAL EPISODE (Retired) | Data Set | 
        | OMENTUM INVOLVEMENT INDICATION CODE | Attribute | 
        | OMENTUM INVOLVEMENT INDICATION CODE | Data Element | 
        | Omnibus Survey (Retired) | NHS Business Definition | 
        | Online Instant Messaging | NHS Business Definition | 
        | ONS LOCAL GOVERNMENT GEOGRAPHIC AREA CODE (LOCAL AUTHORITY DISTRICT) | Data Element | 
        | ONS LOCAL GOVERNMENT GEOGRAPHY CODE (LOCAL AUTHORITY DISTRICT) (Retired) | Data Element | 
        | ONS ORGANISATION IDENTIFIER | Attribute | 
        | ONS ORGANISATION IDENTIFIER | Data Element | 
        | Onset of Established Labour | NHS Business Definition | 
        | ONSET OF ESTABLISHED LABOUR DATE | Data Element | 
        | ONSET OF ESTABLISHED LABOUR DATE TIME (Retired) | Data Element | 
        | ONSET OF ESTABLISHED LABOUR TIME | Data Element | 
        | ONSET OF SECOND STAGE OF LABOUR DATE TIME (Retired) | Data Element | 
        | ONWARD REFERRAL DATE | Data Element | 
        | Onward Referral Date (Retired) | NHS Business Definition | 
        | ONWARD REFERRAL REASON | Attribute | 
        | ONWARD REFERRAL REASON | Data Element | 
        | ONWARD REFERRAL TIME | Data Element | 
        | Onward Referral Time (Retired) | NHS Business Definition | 
        | OPCS Classification of Interventions and Procedures | Supporting Information | 
        | OPCS-4 CODE | Data Element | 
        | OPEN BIOPSY RESULT NOT KNOWN (PERCENTAGE OF REFERRED) | Data Element | 
        | Open Breast Screening Episode | NHS Business Definition | 
        | OPEN OESOPHAGECTOMY SURGICAL APPROACH TYPE | Attribute | 
        | OPEN OESOPHAGECTOMY SURGICAL APPROACH TYPE | Data Element | 
        | Operating Department Practitioner | NHS Business Definition | 
        | OPERATING THEATRE | Class | 
        | OPERATING THEATRE CODE | Attribute | 
        | OPERATING THEATRE DEDICATED TO DAY CASES (Retired) | Attribute | 
        | OPERATING THEATRE INTENDED SPECIALTY (Retired) | Class | 
        | OPERATING THEATRE NAME (Retired) | Attribute | 
        | OPERATING THEATRE OPERATIONAL PLAN (Retired) | Class | 
        | OPERATING THEATRE OPERATIONAL PLAN END DATE (Retired) | Attribute | 
        | OPERATING THEATRE OPERATIONAL PLAN START DATE (Retired) | Attribute | 
        | Operating Theatre Session | NHS Business Definition | 
        | OPERATING THEATRE SESSION TYPE (Retired) | Attribute | 
        | OPERATING THEATRE TOTAL (Retired) | Data Element | 
        | OPERATING THEATRE TYPE (Retired) | Attribute | 
        | OPERATING THEATRES DEDICATED TO DAY CASES TOTAL (Retired) | Data Element | 
        | OPERATION CANCELLATION (Retired) | Attribute | 
        | OPERATION CANCELLATION PATIENT CHOICE (Retired) | Attribute | 
        | OPERATION FUNDING (NATIONAL JOINT REGISTRY) | Data Element | 
        | OPERATION FUNDING FOR NATIONAL JOINT REGISTRY | Attribute | 
        | OPERATION STATUS (Retired) | Data Element | 
        | OPERATION STATUS CODE | Attribute | 
        | OPERATION STATUS CODE | Data Element | 
        | OPERATIVE PROCEDURE (Retired) | Class | 
        | OPERATIVE PROCEDURE INDICATOR (Retired) | Attribute | 
        | OPHTHALMIC MEDICAL PRACTITIONER | Class | 
        | OPHTHALMIC MEDICAL PRACTITIONER END DATE (Retired) | Attribute | 
        | OPHTHALMIC MEDICAL PRACTITIONER START DATE (Retired) | Attribute | 
        | OPHTHALMIC QUALIFICATION COMMITTEE CODE (Retired) | Attribute | 
        | Ophthalmic Qualifications Committee | NHS Business Definition | 
        | OPPORTUNISTIC SCREENING TYPE (Retired) | Attribute | 
        | Optical Headquarters | NHS Business Definition | 
        | Optical Site | NHS Business Definition | 
        | OPTICIAN PREMISES TYPE (Retired) | Attribute | 
        | OPTOMETRIST | Class | 
        | ORAL HEALTH AGE GROUP (Retired) | Attribute | 
        | Oral Health Programme (Retired) | NHS Business Definition | 
        | Ordinarily Resident | NHS Business Definition | 
        | ORGAN CONFINED INDICATOR (Retired) | Attribute | 
        | ORGAN CONFINED INDICATOR (Retired) | Data Element | 
        | ORGAN DONATION CONSENT (Retired) | Class | 
        | ORGAN DONATION TYPE (Retired) | Attribute | 
        | ORGAN IDENTIFIER | Attribute | 
        | ORGAN OR TISSUE DONOR | Class | 
        | ORGAN OR TISSUE DONOR CONTRAINDICATIONS CODE (Retired) | Attribute | 
        | ORGAN OR TISSUE DONOR CONTRAINDICATIONS CODE (Retired) | Data Element | 
        | ORGAN OR TISSUE DONOR NOTIFIED TO UK TRANSPLANT DATE AND TIME (Retired) | Data Element | 
        | ORGAN OR TISSUE DONOR OBSERVATION (Retired) | Class | 
        | ORGAN OR TISSUE DONOR TYPE (CADAVERIC DONOR) (Retired) | Data Element | 
        | ORGAN OR TISSUE RECIPIENT OBSERVATION (Retired) | Class | 
        | ORGAN OR TISSUE UNSUITABLE FOR TRANSPLANTATION REASON CODE (Retired) | Attribute | 
        | ORGAN OR TISSUE UNSUITABLE FOR TRANSPLANTATION REASON CODE (Retired) | Data Element | 
        | ORGAN OR TISSUE UNSUITABLE ORGAN CODE (RENAL TRANSPLANT) (Retired) | Data Element | 
        | ORGAN OR TISSUE UNSUITABLE ORGAN CODE RENAL TRANSPLANT (Retired) | Attribute | 
        | ORGAN SUPPORT MAXIMUM | Attribute | 
        | ORGAN SUPPORT MAXIMUM | Data Element | 
        | ORGAN SYSTEM SUPPORTED | Attribute | 
        | ORGAN SYSTEM SUPPORTED | Data Element | 
        | ORGANISATION | Class | 
        | Organisation (Retired) | NHS Business Definition | 
        | ORGANISATION ACTIVITY ROLE (Retired) | Class | 
        | ORGANISATION ACTIVITY ROLE CODE (Retired) | Attribute | 
        | ORGANISATION CODE | Attribute | 
        | ORGANISATION CODE (ADMITTED FROM TO NEONATAL UNIT) | Data Element | 
        | ORGANISATION CODE (CODE OF COMMISSIONER) | Data Element | 
        | ORGANISATION CODE (CODE OF PROVIDER) | Data Element | 
        | ORGANISATION CODE (CODE OF SUBMITTING ORGANISATION) | Data Element | 
        | ORGANISATION CODE (CONVEYING AMBULANCE TRUST) | Data Element | 
        | ORGANISATION CODE (DIALYSIS CENTRE) (Retired) | Data Element | 
        | ORGANISATION CODE (EDUCATIONAL ESTABLISHMENT) (Retired) | Data Element | 
        | ORGANISATION CODE (EMPLOYER) (Retired) | Data Element | 
        | ORGANISATION CODE (GP PRACTICE RESPONSIBILITY) (Retired) | Data Element | 
        | ORGANISATION CODE (IMMUNISATION RESPONSIBLE ORGANISATION) (Retired) | Data Element | 
        | ORGANISATION CODE (IMPROVING ACCESS TO PSYCHOLOGICAL THERAPIES STEPPED TO PROVIDER) (Retired) | Data Element | 
        | ORGANISATION CODE (LOCAL PATIENT IDENTIFIER (BABY)) | Data Element | 
        | ORGANISATION CODE (LOCAL PATIENT IDENTIFIER (MOTHER)) | Data Element | 
        | ORGANISATION CODE (LOCAL PATIENT IDENTIFIER) | Data Element | 
        | ORGANISATION CODE (NHS HEALTH CHECK PROVIDER) (Retired) | Data Element | 
        | ORGANISATION CODE (OF ACTUAL PLACE OF DELIVERY) | Data Element | 
        | ORGANISATION CODE (OF ADMITTING NEONATAL UNIT) | Data Element | 
        | ORGANISATION CODE (OF INTENDED PLACE OF DELIVERY) | Data Element | 
        | ORGANISATION CODE (OF REPORTING PATHOLOGIST) (Retired) | Data Element | 
        | ORGANISATION CODE (OF RETINOPATHY OF PREMATURITY SCREENING) | Data Element | 
        | ORGANISATION CODE (OF TWO YEAR NEONATAL OUTCOMES ASSESSMENT) | Data Element | 
        | ORGANISATION CODE (ON PATHWAY) | Data Element | 
        | ORGANISATION CODE (PATIENT PATHWAY IDENTIFIER ISSUER) | Data Element | 
        | ORGANISATION CODE (PCT OF GP PRACTICE) (Retired) | Data Element | 
        | ORGANISATION CODE (PCT OF RESIDENCE (MOTHER)) (Retired) | Data Element | 
        | ORGANISATION CODE (PCT OF RESIDENCE) (Retired) | Data Element | 
        | ORGANISATION CODE (PCT OF TESTING SERVICE) (Retired) | Data Element | 
        | ORGANISATION CODE (POSITION NON-NHS FUNDER) (Retired) | Data Element | 
        | ORGANISATION CODE (POSTNATAL PATHWAY LEAD PROVIDER) (Retired) | Data Element | 
        | ORGANISATION CODE (PRIMARY CARE TRUST FOR HPV VACCINE) (Retired) | Data Element | 
        | ORGANISATION CODE (PROVIDER AT RECORD CREATION) (Retired) | Data Element | 
        | ORGANISATION CODE (PROVIDER FIRST DIAGNOSTIC TEST) (Retired) | Data Element | 
        | ORGANISATION CODE (PROVIDER OF CHLAMYDIA TEST) | Data Element | 
        | ORGANISATION CODE (RECEIVING) | Data Element | 
        | ORGANISATION CODE (REPORTING LABORATORY) (Retired) | Data Element | 
        | ORGANISATION CODE (RESIDENCE RESPONSIBILITY) | Data Element | 
        | ORGANISATION CODE (RESPONSIBLE LOCAL AUTHORITY) (Retired) | Data Element | 
        | ORGANISATION CODE (RESPONSIBLE PCT) | Data Element | 
        | ORGANISATION CODE (STOP SMOKING SERVICE PROVIDER) (Retired) | Data Element | 
        | ORGANISATION CODE (TWO YEAR NEONATAL OUTCOMES ASSESSMENT RESPONSIBILITY) | Data Element | 
        | ORGANISATION CODE TYPE (Retired) | Data Element | 
        | ORGANISATION CODE TYPE (BABY) (Retired) | Data Element | 
        | ORGANISATION CODE TYPE (MOTHER) (Retired) | Data Element | 
        | ORGANISATION CODE TYPE CDS COPY RECIPIENT (Retired) | Data Element | 
        | ORGANISATION CODE TYPE CDS PRIME RECIPIENT (Retired) | Data Element | 
        | ORGANISATION CODE TYPE CDS SENDER IDENTITY (Retired) | Data Element | 
        | Organisation Coding Frames | Supporting Information | 
        | ORGANISATION COMMENT (Retired) | Attribute | 
        | Organisation Data Service | Supporting Information | 
        | Organisation Data Service Default Codes | Supporting Information | 
        | ORGANISATION DEPARTMENT (Retired) | Class | 
        | ORGANISATION DEPARTMENT CODE (Retired) | Attribute | 
        | ORGANISATION DEPARTMENT TYPE (Retired) | Attribute | 
        | ORGANISATION END DATE (Retired) | Attribute | 
        | ORGANISATION IDENTIFIER | Attribute | 
        | ORGANISATION IDENTIFIER (BREAST SCREENING UNIT) | Data Element | 
        | ORGANISATION IDENTIFIER (CDS RECIPIENT) | Data Element | 
        | ORGANISATION IDENTIFIER (CDS SENDER) | Data Element | 
        | ORGANISATION IDENTIFIER (CHILDRENS NOMINATED PRINCIPAL TREATMENT CENTRE) | Data Element | 
        | ORGANISATION IDENTIFIER (CODE OF COMMISSIONER) | Data Element | 
        | ORGANISATION IDENTIFIER (CODE OF PROVIDER) | Data Element | 
        | ORGANISATION IDENTIFIER (CODE OF SUBMITTING ORGANISATION) | Data Element | 
        | ORGANISATION IDENTIFIER (CONVEYING AMBULANCE TRUST) | Data Element | 
        | ORGANISATION IDENTIFIER (EDUCATIONAL ESTABLISHMENT) | Data Element | 
        | ORGANISATION IDENTIFIER (EMPLOYER) | Data Element | 
        | ORGANISATION IDENTIFIER (GP PRACTICE RESPONSIBILITY) | Data Element | 
        | ORGANISATION IDENTIFIER (IMMUNISATION RESPONSIBLE ORGANISATION) | Data Element | 
        | ORGANISATION IDENTIFIER (LOCAL PATIENT IDENTIFIER (BABY)) | Data Element | 
        | ORGANISATION IDENTIFIER (LOCAL PATIENT IDENTIFIER (MOTHER)) | Data Element | 
        | ORGANISATION IDENTIFIER (LOCAL PATIENT IDENTIFIER) | Data Element | 
        | ORGANISATION IDENTIFIER (NEWBORN BLOOD SPOT SCREENING LABORATORY) | Data Element | 
        | ORGANISATION IDENTIFIER (OF AUTHORISING PATHOLOGIST) | Data Element | 
        | ORGANISATION IDENTIFIER (OF DATING ULTRASOUND SCAN) | Data Element | 
        | ORGANISATION IDENTIFIER (OF LABORATORY RESULT) | Data Element | 
        | ORGANISATION IDENTIFIER (OF SYSTEMIC ANTI-CANCER THERAPY ADMINISTRATION) | Data Element | 
        | ORGANISATION IDENTIFIER (PATIENT PATHWAY IDENTIFIER ISSUER) | Data Element | 
        | ORGANISATION IDENTIFIER (POSITION NON-NHS FUNDER) | Data Element | 
        | ORGANISATION IDENTIFIER (POSTNATAL PATHWAY LEAD PROVIDER) | Data Element | 
        | ORGANISATION IDENTIFIER (PROVIDER OF ORIGIN) | Data Element | 
        | ORGANISATION IDENTIFIER (RECEIVING) | Data Element | 
        | ORGANISATION IDENTIFIER (REFERRING ORGANISATION) | Data Element | 
        | ORGANISATION IDENTIFIER (REFERRING) | Data Element | 
        | ORGANISATION IDENTIFIER (REPORTING LABORATORY) | Data Element | 
        | ORGANISATION IDENTIFIER (RESIDENCE RESPONSIBILITY) | Data Element | 
        | ORGANISATION IDENTIFIER (RESPONSIBLE LOCAL AUTHORITY MENTAL HEALTH DELAYED DISCHARGE) | Data Element | 
        | ORGANISATION IDENTIFIER (STOP SMOKING SERVICE PROVIDER) | Data Element | 
        | ORGANISATION IDENTIFIER (TEENAGE YOUNG ADULTS NOMINATED PRINCIPAL TREATMENT CENTRE) | Data Element | 
        | ORGANISATION IDENTIFIER FOR NATIONAL BREAST SCREENING PROGRAMME | Attribute | 
        | Organisation Mergers | Supporting Information | 
        | ORGANISATION NAME | Attribute | 
        | ORGANISATION NAME | Data Element | 
        | ORGANISATION NAME (EMPLOYER) | Data Element | 
        | ORGANISATION NAME (HEALTH CARE PROVIDER) | Data Element | 
        | ORGANISATION NAME (PROFESSIONAL REGISTRATION BODY) (Retired) | Data Element | 
        | ORGANISATION NAME (RECEIVING) | Data Element | 
        | ORGANISATION NAME (REFERRING) | Data Element | 
        | ORGANISATION REGISTERED TYPE (Retired) | Attribute | 
        | ORGANISATION REGISTRATION (Retired) | Class | 
        | ORGANISATION REGISTRATION DATE (Retired) | Attribute | 
        | ORGANISATION REGISTRATION SERVICE (Retired) | Class | 
        | ORGANISATION REGISTRATION USER (Retired) | Class | 
        | ORGANISATION RELATIONSHIP (Retired) | Class | 
        | ORGANISATION RELATIONSHIP TYPE (Retired) | Attribute | 
        | ORGANISATION REPORTING PERIOD (Retired) | Class | 
        | ORGANISATION SITE | Class | 
        | Organisation Site (Retired) | NHS Business Definition | 
        | ORGANISATION SITE BED AVAILABILITY (Retired) | Class | 
        | ORGANISATION SITE BED AVAILABILITY END DATE (Retired) | Attribute | 
        | ORGANISATION SITE BED AVAILABILITY START DATE (Retired) | Attribute | 
        | ORGANISATION SITE BED OCCUPANCY (Retired) | Class | 
        | ORGANISATION SITE BED OCCUPANCY END DATE (Retired) | Attribute | 
        | ORGANISATION SITE BED OCCUPANCY START DATE (Retired) | Attribute | 
        | ORGANISATION SITE CLASSIFICATION (Retired) | Attribute | 
        | ORGANISATION SITE CODE | Attribute | 
        | Organisation Site Coding Frames | Supporting Information | 
        | ORGANISATION SITE END DATE (Retired) | Attribute | 
        | ORGANISATION SITE IDENTIFIER | Attribute | 
        | ORGANISATION SITE IDENTIFIER (AT START OF INTRAPARTUM CARE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (DISCHARGE FROM EMERGENCY CARE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (EMERGENCY CARE ATTENDANCE SOURCE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (EMPLOYING ORGANISATION) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF ACTUAL PLACE OF DELIVERY) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF ACUTE ONCOLOGY ASSESSMENT) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF ADMITTING NEONATAL UNIT) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF ANTENATAL BOOKING) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF CANCER FASTER DIAGNOSIS PATHWAY END DATE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF CANCER SITE SPECIFIC STAGE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF CLINICAL ASSESSMENT) (Retired) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF DIAGNOSIS) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF DIAGNOSTIC PROCEDURE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF IMAGING) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF INTENDED PLACE OF DELIVERY) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF MULTIDISCIPLINARY TEAM MEETING) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PATHOLOGY TEST REQUEST) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PLANNED DELIVERY) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PROVIDER CANCER DECISION TO TREAT) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PROVIDER CANCER TREATMENT START DATE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PROVIDER CONSULTANT UPGRADE) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PROVIDER FIRST CANCER SPECIALIST) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PROVIDER FIRST SEEN NON PRIMARY CANCER PATHWAY) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF PROVIDER FIRST SEEN) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF TNM STAGE GROUPING FINAL PRETREATMENT) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF TNM STAGE GROUPING INTEGRATED) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (OF TREATMENT) | Data Element | 
        | ORGANISATION SITE IDENTIFIER (RECEIVING) | Data Element | 
        | ORGANISATION SITE NAME | Attribute | 
        | ORGANISATION SITE NAME (EMPLOYING ORGANISATION) | Data Element | 
        | ORGANISATION SITE START DATE (Retired) | Attribute | 
        | ORGANISATION SITE TREATMENT CENTRE (Retired) | Attribute | 
        | ORGANISATION SITE TYPE (Retired) | Attribute | 
        | ORGANISATION START DATE (Retired) | Attribute | 
        | ORGANISATION TYPE (EMPLOYER) (Retired) | Data Element | 
        | ORGANISATION TYPE FOR WORKFORCE (Retired) | Attribute | 
        | Organisations Introduction (Retired) | Supporting Information | 
        | ORIGIN (Retired) | Attribute | 
        | ORIGINAL DECIDED TO ADMIT DATE | Attribute | 
        | ORIGINAL DECIDED TO ADMIT DATE | Data Element | 
        | ORIGINAL DECIDED TO ADMIT DATE STATUS (Retired) | Data Element | 
        | ORIGINAL REFERRAL REQUEST RECEIVED DATE | Attribute | 
        | ORIGINAL REFERRAL REQUEST RECEIVED DATE | Data Element | 
        | Orthodontic Therapist | NHS Business Definition | 
        | Orthoptist | NHS Business Definition | 
        | Orthotist | NHS Business Definition | 
        | Osteopath | NHS Business Definition | 
        | Other Appointment (Retired) | NHS Business Definition | 
        | OTHER ASSESSMENT TOOL TYPE COMPLETED (Retired) | Data Element | 
        | OTHER BENEFITS RECEIPT INDICATOR (IMPROVING ACCESS TO PSYCHOLOGICAL THERAPIES) | Data Element | 
        | OTHER CARE PROFESSIONAL (Retired) | Class | 
        | OTHER GENE OR STRATIFICATION BIOMARKER TYPE ANALYSED COMMENT | Data Element | 
        | OTHER GERMLINE GENETIC TEST TYPE OFFERED COMMENT | Data Element | 
        | Other Intermediate Care Waiting Time Measurement | NHS Business Definition | 
        | Other Intermediate Care Within 2 Days Waiting Time Measurement | NHS Business Definition | 
        | OTHER MYELODYSPLASIA SYMPTOMS AT DIAGNOSIS | Attribute | 
        | OTHER MYELODYSPLASIA SYMPTOMS AT DIAGNOSIS | Data Element | 
        | OTHER NON BREAST LOCALLY ADVANCED METASTATIC MALIGNANCY INDICATOR | Attribute | 
        | OTHER NON BREAST LOCALLY ADVANCED METASTATIC MALIGNANCY INDICATOR | Data Element | 
        | OTHER PERSON IN ATTENDANCE AT CARE CONTACT | Attribute | 
        | OTHER PERSON IN ATTENDANCE AT CARE CONTACT | Data Element | 
        | OTHER PERSON OBSERVATION | Class | 
        | OTHER REASON FOR REFERRAL (COMMUNITY CARE) | Data Element | 
        | OTHER REASON FOR REFERRAL (MENTAL HEALTH) | Data Element | 
        | OTHER REFERRALS (Retired) | Data Element | 
        | OTHER REFERRER CODE (Retired) | Attribute | 
        | OTHER SOFT TISSUE PROCEDURE PERFORMED INDICATOR (SHOULDER REPLACEMENT) | Data Element | 
        | Other Statutory Authority | NHS Business Definition | 
        | OTHER SURGICAL ACCESS TYPE (HEAD AND NECK CANCER) | Data Element | 
        | OTHER SYSTEMIC ANTI-CANCER THERAPY CURATIVE TREATMENT NOT COMPLETED OUTCOME REASON | Data Element | 
        | OTHER UNIT OF MEASUREMENT DESCRIPTION (SYSTEMIC ANTI-CANCER THERAPY) | Data Element | 
        | OTHER UNIT OF MEASUREMENT DESCRIPTION FOR SYSTEMIC ANTI-CANCER THERAPY | Attribute | 
        | Out-Patient Appointment | NHS Business Definition | 
        | Out-Patient Appointment Consultant | NHS Business Definition | 
        | Out-Patient Appointment Non-Consultant | NHS Business Definition | 
        | OUT-PATIENT ATTENDANCE CDS TYPE (Retired) | Data Set | 
        | Out-Patient Attendance Consultant | NHS Business Definition | 
        | OUT-PATIENT ATTENDANCE CONSULTANT (MENTAL HEALTH) (Retired) | Data Element | 
        | OUT-PATIENT ATTENDANCE INDICATOR (RADIOTHERAPY DATA SET) | Data Element | 
        | OUT-PATIENT ATTENDANCE INDICATOR FOR RADIOTHERAPY DATA SET | Attribute | 
        | OUT-PATIENT ATTENDANCE OUTCOME | Attribute | 
        | OUT-PATIENT ATTENDANCE OUTCOME | Data Element | 
        | Out-Patient Clinic | NHS Business Definition | 
        | OUT-PATIENT CLINIC REFERRING INDICATOR (Retired) | Attribute | 
        | OUT-PATIENT DID NOT ATTENDS (MENTAL HEALTH) (Retired) | Data Element | 
        | Out-Patient Effective Waiting Time Calculation (Retired) | NHS Business Definition | 
        | OUT-PATIENT EFFECTIVE WAITS (Retired) | Data Element | 
        | OUT-PATIENT FIRST APPOINTMENTS DID NOT ATTEND (Retired) | Data Element | 
        | OUT-PATIENT FIRST APPOINTMENTS FIRST ATTENDANCES SEEN (Retired) | Data Element | 
        | Out-Patient Flows Data Set (Retired) | Data Set | 
        | OUT-PATIENT FOLLOW-UP APPOINTMENTS ATTENDANCES SEEN (Retired) | Data Element | 
        | OUT-PATIENT FOLLOW-UP APPOINTMENTS DID NOT ATTEND (Retired) | Data Element | 
        | OUT-PATIENT REFERRAL INDICATOR (Retired) | Attribute | 
        | Out-Patient Stocks Data Set (Retired) | Data Set | 
        | Out-Patient Waiting List | NHS Business Definition | 
        | OUT-PATIENT WAITING TIME BAND (Retired) | Data Element | 
        | OUT-PATIENTS WAITING (Retired) | Data Element | 
        | OUTCOME AT 4 WEEK FOLLOW-UP FOR STOP SMOKING | Attribute | 
        | OUTCOME AT 52 WEEK FOLLOW-UP (Retired) | Attribute | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING CYTOLOGY AND OR CORE BIOPSY NOT REFERRED FOR OPEN BIOPSY CANCER TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING CYTOLOGY AND OR CORE BIOPSY NOT REFERRED FOR OPEN BIOPSY NO RESULT OR INADEQUATE RESULT TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING CYTOLOGY AND OR CORE BIOPSY NOT REFERRED FOR OPEN BIOPSY ROUTINE RECALL TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING CYTOLOGY AND OR CORE BIOPSY NOT REFERRED FOR OPEN BIOPSY SHORT TERM RECALL TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING CYTOLOGY AND OR CORE BIOPSY REFERRED FOR CYTOLOGY AND OR CORE BIOPSY TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING CYTOLOGY AND OR CORE BIOPSY REFERRED FOR OPEN BIOPSY TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING OPEN BIOPSY CANCER DIAGNOSED TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING OPEN BIOPSY NO RESULT OR INADEQUATE RESULT TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING OPEN BIOPSY RESULT BENIGN OR NORMAL ROUTINE RECALL TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING OPEN BIOPSY RESULT BENIGN OR NORMAL SHORT TERM RECALL TOTAL | Data Element | 
        | OUTCOME OF ASSESSMENT UP TO AND INCLUDING OPEN BIOPSY TOTAL | Data Element | 
        | OUTCOME OF ATTENDANCE | Attribute | 
        | OUTCOME OF ATTENDANCE (Retired) | Data Element | 
        | OUTCOME OF ATTENDANCE (CHILDREN AND YOUNG PEOPLE'S HEALTH SERVICE SECONDARY USES) (Retired) | Data Element | 
        | OUTCOME OF ATTENDANCE CODE | Data Element | 
        | OUTCOME OF ATTENDANCE FOR CHILDREN AND YOUNG PEOPLE'S HEALTH SERVICE SECONDARY USES (Retired) | Attribute | 
        | OUTCOME OF INITIAL SCREEN NOT KNOWN TOTAL | Data Element | 
        | OUTCOME OF INITIAL SCREEN REFERRED FOR ASSESSMENT TOTAL | Data Element | 
        | OUTCOME OF INITIAL SCREEN ROUTINE RECALL TOTAL | Data Element | 
        | OUTPATIENT ATTENDANCE IDENTIFIER | Data Element | 
        | Output Area | NHS Business Definition | 
        | OVARY SURFACE INVOLVEMENT INDICATOR | Attribute | 
        | OVARY SURFACE INVOLVEMENT INDICATOR | Data Element | 
        | OVERSEAS SURGICAL TEAM MEMBER (Retired) | Attribute | 
        | OVERSEAS SURGICAL TEAM MEMBER (Retired) | Data Element | 
        | Overseas Visitor | NHS Business Definition | 
        | OVERSEAS VISITOR CHARGING CATEGORY | Attribute | 
        | OVERSEAS VISITOR CHARGING CATEGORY | Data Element | 
        | Overseas Visitor Charging Category | NHS Business Definition | 
        | OVERSEAS VISITOR CHARGING CATEGORY APPLICABLE DATE | Data Element | 
        | OVERSEAS VISITOR CHARGING CATEGORY APPLICABLE END DATE | Data Element | 
        | OVERSEAS VISITOR CHARGING CATEGORY APPLICABLE FROM DATE | Data Element | 
        | OVERSEAS VISITOR CHARGING CATEGORY AT CDS ACTIVITY DATE | Data Element | 
        | OVERSEAS VISITOR EXEMPT CATEGORY | Attribute | 
        | OVERSEAS VISITOR QUOTA NUMBER (Retired) | Attribute | 
        | OVERSEAS VISITOR REFERRAL PRODUCED (Retired) | Attribute | 
        | OVERSEAS VISITOR STATUS | Class | 
        | OVERSEAS VISITOR STATUS CLASSIFICATION | Attribute | 
        | OVERSEAS VISITOR STATUS CLASSIFICATION | Data Element | 
        | OVERSEAS VISITOR STATUS CLASSIFICATION AT CDS ACTIVITY DATE | Data Element | 
        | OVERSEAS VISITOR STATUS END DATE | Attribute | 
        | OVERSEAS VISITOR STATUS END DATE | Data Element | 
        | OVERSEAS VISITOR STATUS START DATE | Attribute | 
        | OVERSEAS VISITOR STATUS START DATE | Data Element | 
        | Overseas Visitor Treatment Portal | Supporting Information | 
        | OVERSEAS VISITOR TREATMENT PREARRANGED (Retired) | Attribute | 
        | OVERSEAS VISITOR UK ARRIVAL DATE | Attribute | 
        | Oxford Orthopaedic Questionnaire | NHS Business Definition | 
        | Oxford Orthopaedic Questionnaire (Shoulder) | NHS Business Definition | 
        | OXFORD SHOULDER SCORE (QUESTION 1) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 10) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 11) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 12) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 2) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 3) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 4) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 5) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 6) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 7) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 8) | Data Element | 
        | OXFORD SHOULDER SCORE (QUESTION 9) | Data Element | 
        | Oxygen Saturation | NHS Business Definition | 
        | OXYGEN SATURATION (ON ADMISSION TO NEONATAL CRITICAL CARE) | Data Element | 
        | OXYGEN SERVICE SUPPLIER INDICATOR (Retired) | Attribute | 
        | Oxygen Therapy | NHS Business Definition | 
        | Oxytocin Administered Date and Time (Retired) | NHS Business Definition | 
        | OXYTOCIN ADMINISTERED DATE TIME (Retired) | Data Element |