| LABORATORY | Class | |
| LABORATORY CODE | Attribute | |
| LABORATORY CODE | Data Element | |
| LABORATORY IDENTIFIER (NEWBORN BLOOD SPOT SCREENING) | Data Element | |
| LABORATORY NAME | Attribute | |
| LABORATORY TYPE | Attribute | |
| Labour and Delivery | Supporting Information | |
| LABOUR FIRST STAGE LENGTH | Attribute | |
| LABOUR OR DELIVERY ONSET METHOD | Attribute | |
| LABOUR OR DELIVERY ONSET METHOD (retired) | Data Element | |
| LABOUR OR DELIVERY ONSET METHOD CODE | Data Element | |
| LABOUR OR DELIVERY ONSET METHOD CODE (NATIONAL NEONATAL DATA SET) | Data Element | |
| LABOUR PROFESSIONAL PRIOR INVOLVEMENT (retired) | Attribute | |
| LABOUR SECOND STAGE LENGTH | Attribute | |
| LACTATE DEHYDROGENASE CONCENTRATION | Data Element | To top |
| LACTATE DEHYDROGENASE LEVEL | Attribute | |
| LACTATE DEHYDROGENASE LEVEL | Data Element | |
| LACTATE DEHYDROGENASE LEVEL (NORMAL UPPER LIMIT) | Data Element | |
| LAMINAR FLOW SYSTEM INDICATOR (retired) | Attribute | |
| LAMINAR FLOW SYSTEM INDICATOR (retired) | Data Element | |
| LANGUAGE | Class | |
| LANGUAGE (retired) | Data Element | |
| LANGUAGE CLASSIFICATION CODE (retired) | Attribute | |
| LANGUAGE CODE | Attribute | |
| LANGUAGE CODE (PREFERRED) | Data Element | |
| LANGUAGE USAGE (retired) | Data Element | |
| LANGUAGE USAGE (retired) | Attribute | |
| Laparoscopy | Supporting Information | |
| LAPAROTOMY FOR NECROTISING ENTEROCOLITIS INDICATION CODE | Attribute | |
| LAPAROTOMY FOR NECROTISING ENTEROCOLITIS INDICATION CODE | Data Element | To top |
| LARGEST LESION FEATURES (RADIOLOGICAL) | Data Element | |
| LARGEST METASTASIS | Attribute | |
| LARGEST METASTASIS (LEFT NECK) | Data Element | |
| LARGEST METASTASIS (RIGHT NECK) | Data Element | |
| Laser Treatment | Supporting Information | |
| LAST CONTACT DATE (LIVING DONOR) | Data Element | |
| LAST DISCHARGE DATE (retired) | Attribute | |
| LAST DNA OR PATIENT CANCELLED DATE | Data Element | |
| LAST DNA OR PATIENT CANCELLED DATE STATUS (retired) | Data Element | |
| Last Dosage Date | Supporting Information | |
| Last Dosage Time | Supporting Information | |
| LAST EPISODE IN SPELL INDICATOR (retired) | Data Element | |
| LAST EPISODE IN SPELL INDICATOR CODE | Data Element | |
| LAST MENSTRUAL PERIOD DATE | Data Element | |
| LAST MENSTRUAL PERIOD DATE | Attribute | To top |
| LAST MENSTRUAL PERIOD YEAR AND MONTH | Data Element | |
| LAST MINUTE CANCELLATIONS FOR NON CLINICAL REASONS TOTAL | Data Element | |
| LEAD CARE PROFESSIONAL TYPE (MATERNITY) | Data Element | |
| LEAD CONTACT INDICATOR | Attribute | |
| Learning Difficulty | Supporting Information | |
| LEARNING DIFFICULTY INDICATOR (retired) | Data Element | |
| LEARNING DIFFICULTY INDICATOR (retired) | Attribute | |
| LEARNING DISABILITIES CARE CLUSTER CODE | Attribute | |
| LEARNING DISABILITIES CARE CLUSTER CODE (FINAL) | Data Element | |
| LEARNING DISABILITIES CARE CLUSTER CODE (INITIAL) | Data Element | |
| Learning Disabilities Nursing | Supporting Information | |
| Learning Disability | Supporting Information | |
| LEARNING DISABILITY INDICATOR (retired) | Attribute | |
| LEARNING DISABILITY INDICATOR (retired) | Data Element | |
| LEAVE | Class | To top |
| LEAVE END DATE (retired) | Attribute | |
| LEAVE OF ABSENCE END DATE (retired) | Data Element | |
| LEAVE OF ABSENCE END REASON (LAST) (retired) | Data Element | |
| LEAVE OF ABSENCE START DATE (retired) | Data Element | |
| LEAVE OF ABSENCE TOTAL (retired) | Data Element | |
| LEAVE OF ABSENCE TOTAL DAYS (retired) | Data Element | |
| LEAVE START DATE (retired) | Attribute | |
| LEAVE TYPE | Attribute | |
| LEGAL STATUS CLASSIFICATION CHANGE FROM TO TYPE (retired) | Data Element | |
| LEGAL STATUS CLASSIFICATION CODE (AT CENSUS DATE) (retired) | Data Element | |
| LEGAL STATUS CLASSIFICATION CODE (AT END OF REPORTING PERIOD) (retired) | Data Element | |
| LEGAL STATUS CLASSIFICATION CODE (AT START OF EPISODE) (retired) | Data Element | |
| LEGAL STATUS CLASSIFICATION CODE (ON ADMISSION) (retired) | Data Element | |
| LEGAL STATUS CLASSIFICATION SUSPENDED TO START SUPERVISED COMMUNITY TREATMENT TYPE (retired) | Data Element | |
| LEGAL STATUS RESTRICTIVENESS (HIGHEST IN REPORTING PERIOD) (retired) | Data Element | To top |
| LEGAL STATUS RESTRICTIVENESS (retired) | Attribute | |
| Length | Supporting Information | |
| LENGTH OF EXPOSURE (retired) | Attribute | |
| LENGTH OF STAY ADJUSTMENT | Attribute | |
| LENGTH OF STAY ADJUSTMENT (REHABILITATION) | Data Element | |
| LENGTH OF STAY ADJUSTMENT (SPECIALIST PALLIATIVE CARE) | Data Element | |
| LENGTH OF STAY ADJUSTMENT REASON | Attribute | |
| Lesion | Supporting Information | |
| LESION DIAMETER GREATER THAN 20MM INDICATION CODE | Data Element | |
| LESION DIAMETER GREATER THAN 20MM INDICATION CODE | Attribute | |
| LESION LOCATION (RADIOLOGICAL) | Data Element | |
| LESION SIZE | Attribute | |
| LESION SIZE (PATHOLOGICAL) | Data Element | |
| LESION SIZE (RADIOLOGICAL) | Data Element | |
| LESION VERTICAL THICKNESS GREATER THAN 2MM INDICATION CODE | Data Element | To top |
| LESION VERTICAL THICKNESS GREATER THAN 2MM INDICATION CODE | Attribute | |
| Level 1 Sexual Health Service | Supporting Information | |
| Level 2 Sexual Health Service | Supporting Information | |
| Level 3 Genitourinary Medicine Service | Supporting Information | |
| LEVEL OF SERVICE PROVIDED (retired) | Attribute | |
| Light Therapy | Supporting Information | |
| Lists Diagram Overview (retired) | Supporting Information | |
| LIST SUSPENSION END DATE | Attribute | |
| LIST SUSPENSION START DATE | Attribute | |
| Lithotripsy Course Attendance (retired) | Supporting Information | |
| Lithotripter (retired) | Supporting Information | |
| LIVE OR STILL BIRTH | Attribute | |
| LIVE OR STILL BIRTH (retired) | Data Element | |
| LIVE OR STILL BIRTH CODE | Data Element | |
| LIVER SUPPORT DAYS | Data Element | To top |
| LIVER TRANSPLANT PERFORMED INDICATOR | Data Element | |
| LIVING ORGAN OR TISSUE DONOR | Class | |
| LMP DATE (retired) | Data Element | |
| Local Authority | Supporting Information | |
| Local Authority District | Supporting Information | |
| LOCAL AUTHORITY SERVICES (retired) | Attribute | |
| LOCAL CARE PROFESSIONAL IDENTIFIER | Attribute | |
| Local Health Board (Wales) | Supporting Information | |
| Local Healthwatch | Supporting Information | |
| LOCAL PATIENT IDENTIFIER | Data Element | |
| LOCAL PATIENT IDENTIFIER | Attribute | |
| LOCAL PATIENT IDENTIFIER (BABY) | Data Element | |
| LOCAL PATIENT IDENTIFIER (EXTENDED) | Data Element | |
| LOCAL PATIENT IDENTIFIER (MOTHER) | Data Element | |
| LOCAL PATIENT IDENTIFIER (UK TRANSPLANT DONOR NUMBER) | Data Element | To top |
| LOCAL PATIENT IDENTIFIER (UK TRANSPLANT RECIPIENT NUMBER) | Data Element | |
| LOCAL POLICY AND OBJECTIVES (retired) | Attribute | |
| LOCAL SUB-SPECIALTY | Class | |
| LOCAL SUB-SPECIALTY CODE | Attribute | |
| LOCAL SUB-SPECIALTY CODE | Data Element | |
| LOCATION | Class | |
| LOCATION CLASS | Data Element | |
| LOCATION CODE | Attribute | |
| LOCATION IN HOSPITAL TYPE | Attribute | |
| LOCATION IN HOSPITAL TYPE (BABY ADMITTED FROM) | Data Element | |
| LOCATION NAME | Attribute | |
| LOCATION OF HIGHEST LEVEL OF CARE | Data Element | |
| LOCATION OF HIGHEST LEVEL OF CARE | Attribute | |
| LOCATION TYPE (HUMAN PAPILLOMAVIRUS VACCINE) (retired) | Data Element | |
| LOCATION TYPE (retired) | Class | To top |
| LOCATION TYPE (retired) | Data Element | |
| LOCATION TYPE CODE (retired) | Attribute | |
| Location Type Codes (retired) | Supporting Information | |
| LOCATION TYPE CODING TYPE | Attribute | |
| LOCUM INDICATOR (retired) | Data Element | |
| LOCUM INDICATOR (retired) | Attribute | |
| LODGED AFTER A and E ATTENDANCE (retired) | Attribute | |
| LODGED PATIENT | Class | |
| LODGING END TIME | Attribute | |
| LODGING START TIME | Attribute | |
| London Borough | Supporting Information | |
| LONG HEAD BICEPS TENOTOMY INDICATOR | Attribute | |
| LONG HEAD BICEPS TENOTOMY INDICATOR | Data Element | |
| Long Term Physical Health Condition | Supporting Information | |
| LONG TERM PHYSICAL HEALTH CONDITION INDICATOR (IMPROVING ACCESS TO PSYCHOLOGICAL THERAPIES) | Data Element | To top |
| LONG TERM PHYSICAL HEALTH CONDITION INDICATOR FOR IMPROVING ACCESS TO PSYCHOLOGICAL THERAPIES | Attribute | |
| Looked After Child | Supporting Information | |
| LOOKED AFTER CHILD INDICATOR | Attribute | |
| LOOKED AFTER CHILD INDICATOR | Data Element | |
| Lower Layer Super Output Area | Supporting Information | |
| LOWER LAYER SUPER OUTPUT AREA (GENERAL MEDICAL PRACTITIONER PRACTICE PATIENT REGISTRATION) (retired) | Data Element | |
| LOWER LAYER SUPER OUTPUT AREA (RESIDENCE) | Data Element | |
| Lung Cancer Care Spell | Supporting Information | |
| Lung Capacity (retired) | Supporting Information | |
| LUNG METASTASES SUB-STAGE GROUPING | Attribute | |
| LUNG METASTASES SUB-STAGE GROUPING | Data Element | |
| Lymph Node | Supporting Information | |
| LYMPH NODE STATUS | Attribute | |
