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 that indicate the presence of an anxiety disorder.

Codes indicating diagnosis of aplastic anaemia

Automatically-generated equivalent of Aplastic Anaemia

User Requirements

This codelist aims to identify any ascitic drain procedure or code that indicate that an ascitic drainage procedure has taken place.

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