Excludes codeine for cough suppression. Include all codeine-containing products within the BNF Chapters 4.7 and 10.1.1 (combined with NSAIDs).

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 defines cystic fibrosis and is designed for specificity.
It was developed for the vitamin D study.

This codelist is a list of [NHS dm+d codes](https://ebmdatalab.net/what-is-the-dmd-the-nhs-dictionary-of-medicines-and-devices/) for "disease modifying antirheumatic drugs" more commonly referred to as DMARDs.

This codelist aims to identify DPP-4 inhibitors (also known an gliptins).

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](/codelist/opensafely/dementia/)

All products containing denosumab.

The following codes are used to indicate Depression