| Observable Entity | Supporting Information | |
| Observable Entity Date | Supporting Information | |
| Observable Entity Time | Supporting Information | |
| OBSERVATION DATE | Data Element | |
| OBSERVATION DATE (ALANINE AMINOTRANSFERASE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (ALKALINE PHOSPHATASE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (ANTENATAL) (retired) | Data Element | |
| OBSERVATION DATE (ASPARTATE AMINOTRANSFERASE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (BILIRUBIN CONCENTRATION) | Data Element | |
| OBSERVATION DATE (BLOOD GASES TEST) | Data Element | |
| OBSERVATION DATE (BLOOD PRESSURE) | Data Element | |
| OBSERVATION DATE (BLOOD PRESSURE PRE-HAEMODIALYSIS) | Data Element | |
| OBSERVATION DATE (BLOOD TEST) (retired) | Data Element | |
| OBSERVATION DATE (BLOOD UREA CONCENTRATION) | Data Element | |
| OBSERVATION DATE (BMI) (retired) | Data Element | To top |
| OBSERVATION DATE (BONE AGE) | Data Element | |
| OBSERVATION DATE (BREASTFEEDING STATUS) (retired) | Data Element | |
| OBSERVATION DATE (CALCULATED CREATININE CLEARANCE) | Data Element | |
| OBSERVATION DATE (CHEST X-RAY) | Data Element | |
| OBSERVATION DATE (COMBINED KtV) | Data Element | |
| OBSERVATION DATE (CORE ANTIBODY) | Data Element | |
| OBSERVATION DATE (CYCLOSPORINE A 12 HOUR TROUGH LEVEL) | Data Element | |
| OBSERVATION DATE (CYCLOSPORINE A 2 HOUR LEVEL C2) | Data Element | |
| OBSERVATION DATE (CYTOMEGALOVIRUS) | Data Element | |
| OBSERVATION DATE (CYTOMEGALOVIRUS POLYMERASE CHAIN REACTION VIRAL LOAD) | Data Element | |
| OBSERVATION DATE (CYTOMEGALOVIRUS TYPE) | Data Element | |
| OBSERVATION DATE (DIABETES RELEVANT DIAGNOSIS) (retired) | Data Element | |
| OBSERVATION DATE (DIALYSATE 24 HOUR CREATININE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (DIALYSATE 24 HOUR PROTEIN LOSS) | Data Element | |
| OBSERVATION DATE (DIALYSATE 24 HOUR UREA CONCENTRATION) | Data Element | To top |
| OBSERVATION DATE (DIALYSATE 24 HOUR VOLUME) | Data Element | |
| OBSERVATION DATE (DIALYSATE KtV) | Data Element | |
| OBSERVATION DATE (ELECTROCARDIOGRAM) | Data Element | |
| OBSERVATION DATE (EPSTEIN-BARR VIRUS) | Data Element | |
| OBSERVATION DATE (ESTIMATED GLOMERULAR FILTRATION RATE) | Data Element | |
| OBSERVATION DATE (EYE EXAMINATION) (retired) | Data Element | |
| OBSERVATION DATE (FOOT EXAMINATION) (retired) | Data Element | |
| OBSERVATION DATE (FULL BLOOD COUNT TEST) | Data Element | |
| OBSERVATION DATE (GAMMA GLUTAMYL TRANSFERASE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (GRAFT CLINICAL ASSESSMENT) | Data Element | |
| OBSERVATION DATE (HAEMOGLOBIN CONCENTRATION) | Data Element | |
| OBSERVATION DATE (HbA1c LEVEL) | Data Element | |
| OBSERVATION DATE (HEAD CIRCUMFERENCE) | Data Element | |
| OBSERVATION DATE (HEIGHT) | Data Element | |
| OBSERVATION DATE (HEPATITIS B ANTIBODY) | Data Element | To top |
| OBSERVATION DATE (HEPATITIS B ANTIGEN) | Data Element | |
| OBSERVATION DATE (HEPATITIS B E ANTIBODY) | Data Element | |
| OBSERVATION DATE (HEPATITIS C ANTIBODY) | Data Element | |
| OBSERVATION DATE (HIGH DENSITY LIPOPROTEIN CHOLESTEROL CONCENTRATION) | Data Element | |
| OBSERVATION DATE (HUMAN IMMUNODEFICIENCY VIRUS) | Data Element | |
| OBSERVATION DATE (HYPOCHROMIC RED CELLS PERCENTAGE) | Data Element | |
| OBSERVATION DATE (LACTATE DEHYDROGENASE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (LOW DENSITY LIPOPROTEIN CHOLESTEROL CONCENTRATION) | Data Element | |
| OBSERVATION DATE (MEASURED 24 HOUR CREATININE CLEARANCE) | Data Element | |
| OBSERVATION DATE (MEASURED CREATININE CLEARANCE) | Data Element | |
| OBSERVATION DATE (MEASURED GLOMERULAR FILTRATION RATE) | Data Element | |
| OBSERVATION DATE (MYCOPHENOLIC ACID TROUGH LEVEL) | Data Element | |
| OBSERVATION DATE (NET DAILY ULTRAFILTRATION) | Data Element | |
| OBSERVATION DATE (NORMALISED PROTEIN CATABOLIC RATE) | Data Element | |
| OBSERVATION DATE (NORMALISED WEEKLY PERITONEAL CREATININE CLEARANCE) | Data Element | To top |
| OBSERVATION DATE (PERITONEAL DIALYSIS TOTAL WEEKLY FLUID VOLUME) | Data Element | |
| OBSERVATION DATE (PERITONEAL EQUILIBRATION TEST) | Data Element | |
| OBSERVATION DATE (PHOSPHATE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (PLATELETS COUNT) | Data Element | |
| OBSERVATION DATE (PROTEIN CREATININE RATIO) | Data Element | |
| OBSERVATION DATE (RED CELL FOLATE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (RESIDUAL RENAL CREATININE CLEARANCE) | Data Element | |
| OBSERVATION DATE (RESIDUAL URINE OUTPUT) | Data Element | |
| OBSERVATION DATE (SERUM ALBUMIN CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM ALUMINIUM CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM B12 CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM BICARBONATE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM CALCIUM CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM CHOLESTEROL LEVEL) (retired) | Data Element | |
| OBSERVATION DATE (SERUM C-REACTIVE PROTEIN CONCENTRATION) | Data Element | To top |
| OBSERVATION DATE (SERUM CREATININE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM CREATININE KtV) | Data Element | |
| OBSERVATION DATE (SERUM CREATININE LEVEL) (retired) | Data Element | |
| OBSERVATION DATE (SERUM FERRITIN CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM INTACT PARATHYROID HORMONE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM MAGNESIUM CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SERUM POTASSIUM CONCENTRATION) | Data Element | |
| OBSERVATION DATE (SIROLIMUS TROUGH LEVEL) | Data Element | |
| OBSERVATION DATE (SMOKING STATUS) | Data Element | |
| OBSERVATION DATE (SODIUM CONCENTRATION) | Data Element | |
| OBSERVATION DATE (STOPPED SMOKING) | Data Element | |
| OBSERVATION DATE (SUBSTANCE MISUSE EVIDENCE) | Data Element | |
| OBSERVATION DATE (TACROLIMUS 12 HOUR TROUGH LEVEL) | Data Element | |
| OBSERVATION DATE (TISSUE TYPING DONOR) | Data Element | |
| OBSERVATION DATE (TISSUE TYPING RECIPIENT) | Data Element | To top |
| OBSERVATION DATE (TOTAL CHOLESTEROL CONCENTRATION) | Data Element | |
| OBSERVATION DATE (TRANSFERRIN SATURATION) | Data Element | |
| OBSERVATION DATE (TRIGLYCERIDES CONCENTRATION) | Data Element | |
| OBSERVATION DATE (URIC ACID CONCENTRATION) | Data Element | |
| OBSERVATION DATE (URINARY ALBUMIN LEVEL) (retired) | Data Element | |
| OBSERVATION DATE (URINE CREATININE CONCENTRATION) | Data Element | |
| OBSERVATION DATE (URINE DIPSTICK TEST BLOOD) | Data Element | |
| OBSERVATION DATE (URINE DIPSTICK TEST PROTEIN) | Data Element | |
| OBSERVATION DATE (URINE KtV) | Data Element | |
| OBSERVATION DATE (URINE UREA CONCENTRATION) | Data Element | |
| OBSERVATION DATE (URINE VOLUME) | Data Element | |
| OBSERVATION DATE (VARICELLA-ZOSTER) | Data Element | |
| OBSERVATION DATE (VITAMIN D CONCENTRATION) | Data Element | |
| OBSERVATION DATE (WAIST MEASUREMENT) | Data Element | |
| OBSERVATION DATE (WEIGHT) | Data Element | To top |
| OBSERVATION DATE (WHITE BLOOD CELL COUNT) | Data Element | |
| OBSERVATION DATE (WHOLE BLOOD MEAN CELL VOLUME) | Data Element | |
| OBSERVATION DATE (WHOLE BLOOD MEAN CORPUSCULAR HAEMOGLOBIN) | Data Element | |
| OBSERVATION DATE AND TIME (BLOOD PRESSURE) | Data Element | |
| OBSERVATION DATE AND TIME (BLOOD PRESSURE AVERAGED) | Data Element | |
| OBSERVATION DATE AND TIME (BLOOD PRESSURE HIGHEST) | Data Element | |
| OBSERVATION DATE AND TIME (BLOOD PRESSURE LOWEST) | Data Element | |
| OBSERVATION DATE AND TIME (FIRST BRAINSTEM DEATH TEST) | Data Element | |
| OBSERVATION DATE AND TIME (HEART RATE) | Data Element | |
| OBSERVATION DATE AND TIME (ISOTOPIC GLOMERULAR FILTRATION RATE) | 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) | Data Element | |
| OBSERVATION MEASUREMENT VALIDATION (retired) | Class | |
| OBSERVATION SCHEME IN USE | Attribute | To top |
| 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 | Supporting Information | |
| OBSESSIVE COMPULSIVE DISORDER INVENTORY SCORE | Data Element | |
| OBSTETRIC DIAGNOSIS | Attribute | |
| Obstetrician | Supporting Information | |
| OCCUPATION (CPA CARE COORDINATOR) (retired) | Data Element | |
| Occupational Psychologist | Supporting Information | |
| Occupational Therapist | Supporting Information | |
| OCCUPATION CODE | Data Element | To top |
| OCCUPATION CODE (CLINICAL SECOND SPECIALTY) | Data Element | |
| OCCUPATION CODE (CLINICAL SPECIALTY) | Data Element | |
| OCCUPATION CODE (retired) | Class | |
| OCCUPATION CODE DESCRIPTION | Data Element | |
| OCCUPATION MOTHER (SNOMED CT) | Data Element | |
| OCCUPIED BED DAYS (retired) | Data Element | |
| OCCUPIED BED DAYS NHS PATIENTS (retired) | Attribute | |
| OCCUPIED BED DAYS NON-NHS PATIENTS (retired) | Attribute | |
| OFFENCE HISTORY INDICATION CODE | Attribute | |
| OFFENCE HISTORY INDICATION CODE | Data Element | |
| OFFERED FOR ADMISSION DATE | Data Element | |
| OFFERED FOR ADMISSION DATE | Attribute | |
| OFFERED FOR ADMISSION DATE STATUS (retired) | Data Element | |
| OFFER OF ADMISSION | Class | |
| OFFER OF ADMISSION ACCEPTED DATE | Attribute | To top |
| 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 (HUMAN PAPILLOMAVIRUS VACCINATION) | Data Element | |
| OFFER STATUS (NEWBORN HEARING SCREENING) (retired) | 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 | To top |
| 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 | |
| Office for National Statistics | Supporting Information | |
| Ofsted | Supporting Information | |
| 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) | Supporting Information | |
| Onset of Established Labour | Supporting Information | |
| ONSET OF ESTABLISHED LABOUR DATE | Data Element | |
| ONSET OF ESTABLISHED LABOUR DATE TIME (retired) | Data Element | To top |
| ONSET OF ESTABLISHED LABOUR TIME | Data Element | |
| ONSET OF SECOND STAGE OF LABOUR DATE TIME (retired) | Data Element | |
| 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 | Data Element | |
| ONS ORGANISATION IDENTIFIER | Attribute | |
| ONWARD REFERRAL DATE | Data Element | |
| Onward Referral Date (retired) | Supporting Information | |
| ONWARD REFERRAL REASON | Data Element | |
| ONWARD REFERRAL REASON | Attribute | |
| ONWARD REFERRAL TIME | Data Element | |
| Onward Referral Time (retired) | Supporting Information | |
| OPCS-4 CODE | Data Element | |
| OPCS Classification of Interventions and Procedures | Supporting Information | |
| OPEN BIOPSY RESULT NOT KNOWN (PERCENTAGE OF REFERRED) | Data Element | To top |
| Open Breast Screening Episode | Supporting Information | |
| Operating Department Practitioner | Supporting Information | |
| 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 THEATRES DEDICATED TO DAY CASES TOTAL (retired) | Data Element | |
| Operating Theatre Session | Supporting Information | |
| OPERATING THEATRE SESSION TYPE (retired) | Attribute | |
| OPERATING THEATRE TOTAL (retired) | Data Element | |
| OPERATING THEATRE TYPE (retired) | Attribute | To top |
| 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 | Supporting Information | |
| OPPORTUNISTIC SCREENING TYPE (retired) | Attribute | To top |
| Optical Headquarters | Supporting Information | |
| Optical Site | Supporting Information | |
| OPTICIAN PREMISES TYPE (retired) | Attribute | |
| OPTOMETRIST | Class | |
| ORAL HEALTH AGE GROUP (retired) | Attribute | |
| Oral Health Programme (retired) | Supporting Information | |
| Ordinarily Resident | Supporting Information | |
| ORGAN CONFINED INDICATOR | Attribute | |
| ORGAN CONFINED INDICATOR | Data Element | |
| ORGAN DONATION CONSENT (retired) | Class | |
| ORGAN DONATION TYPE (retired) | Attribute | |
| ORGAN IDENTIFIER | Attribute | |
| Organisation | Supporting Information | |
| ORGANISATION | Class | |
| ORGANISATION ACTIVITY ROLE (retired) | Class | To top |
| 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) | Data Element | |
| ORGANISATION CODE (EDUCATIONAL ESTABLISHMENT) | Data Element | |
| ORGANISATION CODE (EMPLOYER) (retired) | Data Element | |
| ORGANISATION CODE (GP PRACTICE RESPONSIBILITY) | Data Element | |
| ORGANISATION CODE (IMMUNISATION RESPONSIBLE ORGANISATION) | Data Element | |
| ORGANISATION CODE (IMPROVING ACCESS TO PSYCHOLOGICAL THERAPIES STEPPED TO PROVIDER) | Data Element | |
| ORGANISATION CODE (LOCAL PATIENT IDENTIFIER (BABY)) | Data Element | |
| ORGANISATION CODE (LOCAL PATIENT IDENTIFIER (MOTHER)) | Data Element | To top |
| 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 | To top |
| 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 (BABY) (retired) | Data Element | |
| ORGANISATION CODE TYPE (MOTHER) (retired) | Data Element | |
| ORGANISATION CODE TYPE (retired) | Data Element | To top |
| 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 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 Diagram Overview | Supporting Information | |
| ORGANISATION END DATE (retired) | Attribute | |
| ORGANISATION IDENTIFIER | Attribute | |
| ORGANISATION IDENTIFIER (BREAST SCREENING UNIT) | Data Element | |
| ORGANISATION IDENTIFIER (CODE OF COMMISSIONER) | Data Element | |
| ORGANISATION IDENTIFIER (CODE OF PROVIDER) | Data Element | To top |
| 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 DATING ULTRASOUND SCAN) | Data Element | |
| ORGANISATION IDENTIFIER (OF REPORTING PATHOLOGIST) | 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 | To top |
| ORGANISATION IDENTIFIER (PROVIDER OF ORIGIN) | Data Element | |
| ORGANISATION IDENTIFIER (RECEIVING) | 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 FOR NATIONAL BREAST SCREENING PROGRAMME | Attribute | |
| Organisation Mergers | Supporting Information | |
| ORGANISATION NAME | Data Element | |
| ORGANISATION NAME | Attribute | |
| ORGANISATION NAME (EMPLOYER) | Data Element | |
| ORGANISATION NAME (PROFESSIONAL REGISTRATION BODY) (retired) | Data Element | |
| ORGANISATION NAME (RECEIVING) | Data Element | |
| ORGANISATION NAME (REFERRING) | Data Element | To top |
| 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 | |
| Organisations Introduction | Supporting Information | |
| Organisation Site | Supporting Information | |
| ORGANISATION SITE (retired) | Class | |
| 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 | To top |
| 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 END DATE (retired) | 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 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 CLINICAL ASSESSMENT) | Data Element | |
| ORGANISATION SITE IDENTIFIER (OF DIAGNOSIS) | Data Element | To top |
| 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) | 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 NAME | Attribute | |
| ORGANISATION SITE NAME (EMPLOYING ORGANISATION) | Data Element | To top |
| ORGANISATION SITE START DATE (retired) | Attribute | |
| ORGANISATION SITE TREATMENT CENTRE (retired) | Attribute | |
| ORGANISATION SITE TYPE (retired) | Attribute | |
| Organisations Menu | Supporting Information | |
| ORGANISATION START DATE (retired) | Attribute | |
| ORGANISATION TYPE (EMPLOYER) (retired) | Data Element | |
| ORGANISATION TYPE FOR WORKFORCE (retired) | Attribute | |
| ORGAN OR TISSUE DONOR | Class | |
| ORGAN OR TISSUE DONOR CONTRAINDICATIONS CODE | Data Element | |
| ORGAN OR TISSUE DONOR CONTRAINDICATIONS CODE | Attribute | |
| ORGAN OR TISSUE DONOR NOTIFIED TO UK TRANSPLANT DATE AND TIME | Data Element | |
| ORGAN OR TISSUE DONOR OBSERVATION | Class | |
| ORGAN OR TISSUE DONOR TYPE (CADAVERIC DONOR) | Data Element | |
| ORGAN OR TISSUE RECIPIENT OBSERVATION | Class | |
| ORGAN OR TISSUE UNSUITABLE FOR TRANSPLANTATION REASON CODE | Attribute | To top |
| ORGAN OR TISSUE UNSUITABLE FOR TRANSPLANTATION REASON CODE | Data Element | |
| ORGAN OR TISSUE UNSUITABLE ORGAN CODE (RENAL TRANSPLANT) | Data Element | |
| ORGAN OR TISSUE UNSUITABLE ORGAN CODE RENAL TRANSPLANT | Attribute | |
| ORGAN SUPPORT MAXIMUM | Data Element | |
| ORGAN SYSTEM SUPPORTED | Attribute | |
| 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 | Data Element | |
| ORIGINAL REFERRAL REQUEST RECEIVED DATE | Attribute | |
| Orthodontic Therapist | Supporting Information | |
| Orthoptist | Supporting Information | |
| Orthotist | Supporting Information | |
| Osteopath | Supporting Information | To top |
| Other Appointment | Supporting Information | |
| OTHER ASSESSMENT TOOL TYPE COMPLETED (retired) | 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 MYELODYSPLASIA SYMPTOMS AT DIAGNOSIS | Attribute | |
| OTHER MYELODYSPLASIA SYMPTOMS AT DIAGNOSIS | 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 | To top |
| Other Statutory Authority | Supporting Information | |
| 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 | To top |
| OUTCOME OF ATTENDANCE (CHILDREN AND YOUNG PEOPLE'S HEALTH SERVICE SECONDARY USES) (retired) | Data Element | |
| OUTCOME OF ATTENDANCE (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 | |
| Out-Patient Appointment | Supporting Information | |
| Out-Patient Appointment Consultant | Supporting Information | |
| Out-Patient Appointment Non-Consultant | Supporting Information | |
| OUT-PATIENT ATTENDANCE CDS TYPE (retired) | Data Set | |
| Out-Patient Attendance Consultant | Supporting Information | |
| 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 | To top |
| Out-Patient Clinic | Supporting Information | |
| OUT-PATIENT CLINIC REFERRING INDICATOR (retired) | Attribute | |
| OUT-PATIENT DID NOT ATTENDS (MENTAL HEALTH) (retired) | Data Element | |
| Out-Patient Effective Waiting Time Calculation (retired) | Supporting Information | |
| 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 Flows Data Set Overview (retired) | Supporting Information | |
| 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 Stocks Data Set Overview (retired) | Supporting Information | |
| OUT-PATIENTS WAITING (retired) | Data Element | To top |
| Out-Patient Waiting List | Supporting Information | |
| OUT-PATIENT WAITING TIME BAND (retired) | Data Element | |
| Output Area | Supporting Information | |
| OVARY SURFACE INVOLVEMENT INDICATOR | Data Element | |
| OVARY SURFACE INVOLVEMENT INDICATOR | Attribute | |
| OVERSEAS SURGICAL TEAM MEMBER (retired) | Attribute | |
| OVERSEAS SURGICAL TEAM MEMBER (retired) | Data Element | |
| Overseas Visitor | Supporting Information | |
| Overseas Visitor Charging Category | Supporting Information | |
| OVERSEAS VISITOR CHARGING CATEGORY | Data Element | |
| OVERSEAS VISITOR CHARGING CATEGORY | Attribute | |
| OVERSEAS VISITOR CHARGING CATEGORY APPLICABLE DATE | Data Element | |
| OVERSEAS VISITOR CHARGING CATEGORY AT CDS ACTIVITY DATE | Data Element | |
| OVERSEAS VISITOR EXEMPT CATEGORY | Attribute | |
| OVERSEAS VISITOR QUOTA NUMBER (retired) | Attribute | To top |
| 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 | Data Element | |
| OVERSEAS VISITOR STATUS START DATE | Attribute | |
| Overseas Visitor Treatment Portal | Supporting Information | |
| OVERSEAS VISITOR TREATMENT PREARRANGED (retired) | Attribute | |
| OVERSEAS VISITOR UK ARRIVAL DATE | Attribute | |
| Oxford Orthopaedic Questionnaire | Supporting Information | |
| Oxford Orthopaedic Questionnaire (Shoulder) | Supporting Information | |
| OXFORD SHOULDER SCORE (QUESTION 1) | Data Element | To top |
| 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 | Supporting Information | |
| OXYGEN SATURATION (ON ADMISSION TO NEONATAL CRITICAL CARE) | Data Element | |
| OXYGEN SERVICE SUPPLIER INDICATOR (retired) | Attribute | |
| Oxygen Therapy | Supporting Information | To top |
| Oxytocin Administered Date and Time (retired) | Supporting Information | |
| OXYTOCIN ADMINISTERED DATE TIME (retired) | Data Element | |
