The codelist contains medicines that are ACE Inhibitors from the RAS section of BNF codes.

Codes that indicate an absence of an appendix, either as a clinical finding or due to appendicectomy

Codes that indicate an episode of acute appendicitis

This list contains dm+d entries for adrenaline auto-injectors, commonly know as pens, which are used by people when they experience an emergency allergic reaction.

This code list contains NHS dm+d codes for alpha-adrenoceptor blocking Drugs in the cardiovascular chapter of BNF codes.

Codelist for defining the presence of a history of amputation

OPCS-4 codes to identify amputations following orthopaedic surgery

This captures amputation of the lower limb for the risk prediction project. Other studies requiring amputation codes should refer to the full codelist, under 'Amputation'.

The following notebook contains medicines that are angiotensin II receptor antagonists from the RAS section of BNF codes. All combination products have been excluded and the list has been cross refereneced with the actual BNF for "Other drugs in the class ace inhibitors".

This codelists contains all the NHS dictionary of medicines and devices codes for "antidiabetic drugs" as specified by the BNF coding system. This does not include insulin.

This codelist contains NHS Dictionary of Medicines and Devices (dm+d) for oral antihistamines

Codes that indicate incident or history of antiphospholipid syndrome

This codelist contains codes for antiplatelets.

Codes indicating diagnosis of aplastic anaemia

Automatically-generated equivalent of Aplastic Anaemia

A list of NHS dictionary of medicines and devices codes for Aspirin.

Codes indicating diagnosis of asplenia or dysplenia (acquired or congenital)

Automatically-generated equivalent of Asplenia

This codelists contains codes for assessment instruments and outcome measures for "long COVID"

Codes indicating an asthma diagnosis

Automatically-generated equivalent of Asthma Diagnosis

Medication codes of inhaled salbutamol medications used for asthma treatment

Medication codes of inhaled corticosteroid medications used for asthma treatment

Medication codes of oral prednisolone.

The following codes are used to indicate a clinical finding of Atrial fibrillation.

The following codes are used to indicate Atrial fibrillation exception reporting

Codes for a history of atrial fibrillation or atrial flutter

The following codes are used to indicate Atrial fibrillation quality indicator care unsuitable for patient

The following codes are used to indicate Atrial fibrillation resolved

The following codes are used to indicate Atrial fibrillation: Patient has chosen not to receive atrial fibrillation quality indicator care

BNF codelists for azathioprine.

This codelist contains NHS Dictionary of Medicines and Devices (dm+d) codes for all azathioprine preparations.

This codelists includes AMPs and VMPs from the NHS dictionary of medicines and devices for azithromycin.

This code list contains NHS dm+d codes for beta-adrenoceptor blocking drugs, which are better known as beta-blockers.

Codes indicating a bone marrow transplant has been carried out

Automatically-generated equivalent of Bone Marrow Transplant

Codes indicating a diagnosis of COPD exacerbation or a LRTI infection

Code indicating an annual review of COPD or the provision of a rescue pack for COPD exacerbations

The following two ICD-10 codes for COVID identification have been used

U07.1 virus identified Use this code when COVID-19 has been confirmed by laboratory testing irrespective of severity of clinical signs or symptoms. Use additional code, if desired, to identify pneumonia or other manifestations.

U07.2 COVID-19, virus not identified Use this code when COVID-19 is diagnosed clinically or epidemiologically but laboratory testing is inconclusive or not available. Use additional code, if desired, to identify pneumonia or other manifestations

Helper file for COVID identifcation in primary care - suspect case. Used to identify which of the suspect codes in the COVID identification in primary care file is used by 111 for recording a suspect case.

Helper file for COVID identifcation in primary care relating to the case, negative test, potential historic case and historic case codelists. Can be used to identify which of the codes in these codelists have been used by Pillar 2 testing (and later Pillars).

Codes indicating exposure to COVID-19 (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 antigen test negative (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 historic case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

This is a list of NHS dictionary of medicines and devices oral non-seroidal anti-inflammatory drugs (NSAIDs) that specifically targets cyclooxygenase / COX-2 enzyme.

The codelist contains medicines that are classed as calcium channel blockers in BNF codes.

Codes indicating a diagnosis of a cancer other than lung cancer or haematological cancer

Automatically-generated equivalent of Cancer excluding lung and haematological

Chapter I of ICD-10 for cardiovascular mortality with variables separating out codes relating to myocardial infarction and heart failure. Previously used by Jeremy P. Brown and Krishnan Bhaskaran (see below).

Codelist for people with a diagnosis of cerebral palsy

Codes indicating chemotherapy or radiotherapy or both has been carried out

Automatically-generated equivalent of Chemotherapy or Radiotherapy

An updated version of https://codelists.opensafely.org/codelist/opensafely/chemotherapy-or-radiotherapy/, with truncated codes fixed.

This notebook contains NHS dm+d codes medications chloroquine phosphate or chloroquine sulfate.

Codes indicating a diagnosis of chronic heart disease, excluding simple VSD and AF

Automatically-generated equivalent of Chronic Cardiac Disease

A codelist developed to support identification of people with chronic kidney disease using codes indicating end stage renal disease, dialysis or kidney transplant code.

Automatically-generated equivalent of Chronic Kidney Disease

Code indicating diagnosis of chronic liver disease

Automatically-generated equivalent of Chronic Liver Disease

Codes indicating a diagnosis of a chronic respiratory disease excluding asthma

Automatically-generated equivalent of Chronic Respiratory Disease

BNF codelist for oral ciclosporin.

NHS Dictionary of medicines and devices (dm+d) codelist for ciclosporin

The following codelist contains products with more than one ingredient for the treatment of blood pressure from the cardiovascular chapter of BNF codes.

Codes indicating current, adult asthma.

Codelist indicating current COPD.

Codes indicating a diagnosis of cystic fibrosis or associated diseases such as primary ciliary dyskinesia

This codelist is a list of NHS dm+d codes for "disease modifying antirheumatic drugs" more commonly referred to as DMARDs.

This is a codelist that identifies all preparations from the NHS dictionary of medicines and devices for dabigatran etexilate , one of the Directing Oral Anticoagulants which are often referred to as DOACs.

Codes indicating dementia

This codelist captures Dementia and Alzheimers Disease. Discussion here: https://github.com/opensafely/codelist-development/issues/61

Automatically-generated equivalent of Dementia

The following codes are used to indicate Depression

Codes indicating diagnosis of permanent diabetes

Automatically-generated equivalent of Diabetes

This lists contains CTV3 codes used to identify people who may have had diabetes ketoacidosis (DKA). It has been generated based on a DKA snomed list using internal mappings. The SNOMED codelistlist was conceived to identify DKA in a specific group of patients in a specific time period, therefore we have been permissive in including unspecific codes which may not be suitable for all studies.

This lists contains codes used to identify people who may have had diabetes ketoacidosis (DKA). This list was conceived to identify DKA in a specific group of patients in a specific time period, therefore we have been permissive in including unspecific codes which may not be suitable for all studies.

Codes which likely indicate either Type 1 or Type 2 diabetes but are ambiguous.

ICD-10 codes for Diabetic Ketoacidosis

Codes indicating dialysis treatment, or preparation for dialysis

This is a codelists that identifies all prepartaions from the NHS dictionary of medicines and devices for Directing Oral Anticoagulants better knows as DOACs. They have previously been know as NOACs.

Codes indicating a diagnosis of influenza or influenza-like illness

Diagnoses of Down syndrome

This is a codelist that identifies all preparations from the NHS dictionary of medicines and devices for edoxaban, one of the Directing Oral Anticoagulants which are often referred to as DOACs.

A list of ethnicity codes in use in UK general practice including aggregate grouping at two levels.

Automatically-generated equivalent of Ethnicity

This is a codelist that identifies SNOMED codes where a Directing Oral Anticoagulants (DOACs) is explicitly contraindicated. They have previously been know as NOACs.

The following codes are used to indicate Falls

OPCS-4 codes for all ELECTIVE, or non-emergency, orthopaedic procedures.

OPCS-4 codes for all emergency orthopaedic procedures

These are general fracture fixation OPCS-4 procedural codes These OPCS-4 procedure codes need an additional ICD-10 diagnosis code to confirm that it was for an emergency rather than non-emergency procedure (defined as urgent or elective) Emergency surgery defined as P1a and P1b as per Royal College of Surgeons Surgical Prioritisation Guidelines

Codelist for creating binary variable capturing fragilities/fractures

Codes indicating diagnosis of either a GI bleed or a GI ulcer

Automatically-generated equivalent of GI Bleed or Ulcer

Codes to define gastrointestinal bleeding in ONS death data.

Codes indicating a diagnosis of Temporal Arteritis or Giant Cell Arteritis

Codes indicating a diagnosis of HIV

Automatically-generated equivalent of HIV

todo

Codes indicating diagnosis of a haematological cancer including multiple myeloma

Automatically-generated equivalent of Haematological Cancer

This indicates a diagnosis of heart failure (both left and right sided).

A codelist developed to support identification of people with hepatitis C, current or past.

Includes a history of flag: - 0 for not a history code; - 1 history code; - 2 possible history code

The following list contains codes for Hidradenitis Suppurativa.

This codelist is used to identify INR blood tests that are explicitly considered to be high.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of abatacept.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of Adalimumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of aflibercept.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of alemtuzumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of anakinra.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of baricitinib.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of belimumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of benralizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of brodalumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of certolizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of dupilumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of etanercept.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of golimumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of guselkumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of infliximab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of ixekizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of mepolizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of methotrexate.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of natalizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of ocrelizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of omalizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of ranibizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of reslizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of risankizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of rituximab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of sarilumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of secukinumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of tildrakizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of tocilizumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of tofacitinib.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of upadacitinib.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of ustekinumab.

This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of vedolizumab.

A list of high dose inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of high dose inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of high dose single ingredient inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

This is a list of NHS dictionary of medicines and devices items for oral hydroxychloroquine.

Code indicative of a hypertension diagnosis

Automatically-generated equivalent of Hypertension

A list of NHS dictionary of medicines and devices codes for oral Ibuprofen.

Codes relating to incident stroke in primary care.

Incident heart failure codes

Further adapted from https://codelists.opensafely.org/codelist/opensafely/incident-stroke/2020-10-05/, to remove codes associated with trauma, or perinatal events (thanks to Brian Nicholson for reviewing this!).

The list was previously from https://codelists.opensafely.org/codelist/opensafely/stroke-updated/2020-06-02/.

This is a list of NHS dictionary of medicines and devices codes for oral indometacin.

Codes indicating diagnosis of inflammatory bowel disease

Automatically-generated equivalent of Inflammatory Bowel Disease

This is a list of influenza vaccinations in the NHS dictionary of medicines and devices.

tbc

TODO

TODO

TODO

A list of insulin preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

Codes for a history of intellectual/learning disability

Codelist for identifying a history of intellectual / learning disability (including Down's syndrome)

This codelist is used to identify INR blood tests.

These codes indicate a diagnosis of interstitial lung disease (ILD)

The following codes are used to indicate Invite for atrial fibrillation care review

Codes indicating kidney transplant (recipient)

A list of combination inhalers including a long acting beta agonist (LABA) and an inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of combination inhalers including a long acting beta agonist (LABA) and long acting antimuscarininc (LAMA) and inhaled corticosteroids (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of combination inhalers including a long acting beta agonist (LABA) and long acting antimuscarininc (LAMA) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

The following codes are used to indicate learning disability.

dm+d codelist for Leflunomide

A list of leukotriene receptor antagonists (LTRA) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

This code list includes all oral lithium products available in the UK, used for the treatment and prevention of mental illness.

This code list includes all oral lithium products available in the UK, used for the treatment and prevention of mental illness.

This code list includes all medicines containing lithium carbonate that are available in the UK.

This code list includes all medicines containing lithium carbonate that are available in the UK.

This code list includes all medicines containing lithium citrate available in the UK.

This code list includes all medicines containing lithium citrate available in the UK.

A list of low and medium dose inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of low and medium dose multpiple ingredient inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of low and medium dose single ingredient inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

This codelist contains all preparations of low molecular weight heparins.

This dm+d codelist contains all preparations of low molecular weight heparins.

Codes indicating a diagnosis of a lower respiratory tract infection excluding pneumonia

Codes indicating a diagnosis of lung cancer

Automatically-generated equivalent of Lung Cancer

dm+d codelist for mercaptopurine

dm+d codelist for oral methotrexate

dm+d codelist for injectable methotrexate

BNF codelist for oral methotrexate.

These codes indicate a diagnosis of multiple sclerosis (MS)

dm+d codelist for mycophenolate

BNF codelist for mycophenolate.

This is a list of codes denoting a heart attack / myocardial infarction.

The following codes are used to indicate Myocardial infarction 2

This codelists supports analysis of records of people who may reside in a nursing or care home. NHS England requires primary care networks (PCNs) to maintain this list as part their contract.

This codelist supports analysis of records of people who may reside in a nursing or care home. NHS England requires primary care networks (PCNs) to maintain this list as part their contract.

This codelist are the recommended snomed-ct codes from the NICE guidelines on managing the long-term effects of COVID-19 also known as "long COVID"

This is a list of NHS dictionary of medicines and devices oral non-seroidal anti-inflammatory drugs (NSAIDs) .

This is a list of NHS dictionary of medicines and devices codes for high dose naproxen.

This is a list of NHS dictionary of medicines and devices codes for low dose naproxen.

This is a list of NHS dictionary of medicines and devices codes for "other doses" of naproxen.

A list of nebulised medications preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices that are used in asthma and COPD.

dmd codelist for newer aminosalicylates for IBD; balsalazide, mesalazine, olsalazine.

This codelist contains codes for oestrogen and oestrogen-like drugs that potentially increase the risk of thrombotic events.

Surgical fasciotomy codes - for limbs only

Surgical post-operative washout + debridement codes

A list of clinical codes related to osteoarthritis.

Codes indicating a diagnosis of a chronic respiratory disease excluding asthma, cystic fibrosis and associated diseases such as primary ciliary dyskinesia

Chronic heart conditions, excluding heart failure

Codes indicating other neurological conditions not including stroke or dementia

Automatically-generated equivalent of Other Neurological Conditions

Codes indicating other organ transplant (not kidney)

Patients who have any other chronic respiratory condition than COPD considered as a respiratory condition for the UK influenza surveillance programme. It covers: fibrosing lung disease, bronchiectasis or cystic fibrosis. Any code for either of these conditions will be taken to indicate presence of an 'other' chronic respiratory condition, absence of codes for either condition as absence of the disease.

Update 21-07-20: Removal of one CF screening code (Y2708 Cystic fibrosis screening test)

dm+d codelist for penicillamine

Codes indicating a diagnosis of a permanent immunosuppression excluding HIV, and including genetic causes of immunosuppression

Automatically-generated equivalent of Permanent Immunosuppression

This is a list of pneumococcal vaccinations in the NHS dictionary of medicines and devices

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tbc

tbc

Pneumonia ICD-10 codes.

This is a list of snomed / NHS dictionary of medicines and devices for oral proton pump inhibtors (PPI).

This is a list of SNOMED-CT codes used to identify diagnosis of psoriatic arthritis.

The following codes are used to indicate Psychosis, schizophrenia + bipolar affective disease

Codelist containing SNOMED codes relating to COVID Oximetry @home.

These should be used for prototyping and monitoring of the uptake of these codes.

Codes indicating diagnosis of rheumatoid arthritis or SLE or psoriasis

Automatically-generated equivalent of RA / SLE / Psoriasis

This codelists contains referral and signposting codes for "long COVID".

OPCS-4 codes to identify re-operations following surgery. Specifically this list focuses on remanipulation of fractures, secondary reductions of dislocations and revision operations.

These codes indicate a diagnosis of rheumatoid arthritis (RA)

This is a codelist that identifies all preparations from the NHS dictionary of medicines and devices for rivaroxaban, one of the Directing Oral Anticoagulants which are often referred to as DOACs.

This is a codelist that identifies all preparations from the NHS dictionary of medicines and devices for rivaroxaban, one of the Directing Oral Anticoagulants which are often referred to as DOACs.

A list of short acting beta agonist (SABA) inhaler preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of single ingredient short acting antimuscarinic (SAMA) inhaler preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

This codelist contains codes from the NHS dictionary of medicines and devices (dm+d) for SSRI medications, a common class of antidepressants.

This codelist contains codes from the NHS dictionary of medicines and devices (dm+d) for SSRI medications, a common class of antidepressants.

Codes indicating diagnosis of sickle cell disease

Automatically-generated equivalent of Sickle Cell Disease

A list of single ingredient inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of single ingredient long acting beta agonist (LABA) inhaler preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

A list of single ingredient long acting antimuscarinic (LAMA) inhaler preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

Smoking codes that are clear in the capturing of smoking status. To be contrasted against Smoking - Unclear where the codes are less certain.

Automatically-generated equivalent of Smoking - Clear

Codes that indicate smoking status. These codes are less clear than codes captured in Smoking Clear, and there remains some ambiguity about the smoking status.

Automatically-generated equivalent of Smoking - Unclear

Codes indicating solid organ transplantion (receptient only) has been carried out

Automatically-generated equivalent of Solid Organ Transplantation

This codelist contains spironolactone preparations.

A list of statin preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.

Automatically-generated equivalent of Stroke

DEPRECATED due to presence of Read 2 codes, and missing CTV3 codes, the corrected version is: https://codelists.opensafely.org/codelist/opensafely/stroke-updated

Codes indicating stroke (both haemorrhagic and ischaemic).

An updated version of https://codelists.opensafely.org/codelist/opensafely/stroke/, which contained some stray unmapped Read 2 codes.

The original codelist had 49 Read 2 codes. These are replaced by 127 CTV3 codes.

Stroke ICD-10 codes.

SNOMED code to support NHS England Structured Medication Review Service.

Oral sulfasalazine preparation in dm+d

This is a list of all the emergency OPCS-4 codes (as defined by RCS priority groups 1a and 1b), excluding the complication OPCS-4 codes for amputations, dislocations, compartment syndrome and washouts

OPCS-4 codes indicating an emergency or immediate procedure. Can be used in addition to primary procedure code

DEFINITION: Surgery for peripheral artery disease

Variables: (1) a binary variable denoting the presence of one of the codes at any point in the patient record. (2) the earliest date of such a code.

OPCS-4 codes indicating planned staged OR revision procedure. Can be used in addition to primary procedure code

These codes indicate a diagnosis of systemic lupus erythematosus (SLE)

Codes indicating a diagnosis of a temporary immunosuppression.

Automatically-generated equivalent of Temporary Immunosuppression

The codelist contains medicines that are thiazide diuretics from the "thiazides and related diuretics" section of BNF codes.

Codes that indicate incident or history of transient ischaemic attack. This codelist include definite and probable transient ischaemic attack. Future studies which require codes denoting definite transient ischaemic attack need to derive another codelist.

Codes that indicate an episode of transverse myelitis

Codes explicitly indicating Type 1 Diabetes

Codes explicity indicating Type 1 Diabetes (secondary care)

Codes explicitly indicating Type 2 Diabetes

Codes indicating incident/ history of valvular atrial fibrillation (codes indicating artificial valves and mitral stenosis).

DEFINITION: A history of venous thromboembolic disease

Variables: (1) a binary variable denoting the presence of one of the codes at any point in the patient record. (2) the earliest date of such a code.

This is a codelist to identify all warfarin preparations in the NHS dictionary of medicines and devices.

CTV3 (READ V3) codelist for Worms

Codes for type 1 and type 2 diabetes.

Codes that indicate hazardous alcohol drinking behavior. Future studies that require to specify ex-drinker and current-drinker need to revisit and review this codelist.

Codes to define incident cases of venous thromboemolic disease.

Codes that indicate incident or history of peripheral arterial disease.

This is used for calculating the CHAD2S2-VASc score.

This is a list of generic codes which record the presence of a severe or profound learning disability, flagged as such in a patient's records separately to their underlying diagnosis.

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Codes to define venous thromboembolism in ONS death data.

Codes to define venous thromboembolic disease in hospital.