Rheumatoid Diseases Aurum codelist (as part of Charlson Comorbidities codelists): 

Generated by GGL and reviewed by CWG
Used CPRD AURUM Medical Browser, Version March 2024


Notes on process: 
- started with J Davidson Rehaumatoid Arthritis codelist- https://doi.org/10.17037/DATA.00003469
- merge in Rheumatoid Disease codes from the Fortin BMC paper - https://bmcmedinformdecismak.biomedcentral.com/counter/pdf/10.1186/s12911-022-02006-1.pdf
- searched on "term" and to additional codes 
- capturing the following to get a systemic inflammation: 
	- Rheumatoid arthritis
	- systemic lupus erythematosus
	- sarcoid 
	- systemic sclerosis 
	- polymyositis
	- dermatomyositis
	- temporal arteritis 
	- giant cell arteritis
	- polymyalgia rheumatica
	- sjogren's syndrome



Notes on inclusion/exclusion criteria: 
- included historic ("history of"/"juvenile") codes as often carried into adukt life and casues problems later on
- included monitoring codes when clear the individual has RA 
- included manifestations of rheumatoid disease 
- only capture SLE/ lupus complications affecting different organs, exclude forms of lupus limited to skin only e.g. discoid lupus, ctaneous lupus etc.
- include if unspecified lupus erythematosus as could be SLE
- excluded "family history" codes
- excluded screening/test done codes with no indication of results 
- Exclude drug-induced.

