. Author manuscript; available in PMC: 2010 Sep 1.

Published in final edited form as: Pharmacoepidemiol Drug Saf. 2009 Sep;18(9):807–814. doi: 10.1002/pds.1784

Table 1.

READ diagnostic codes used to identify patients with HCV infection in the THIN database.

READ Diagnostic Code	Disease Classification
A704000	Viral hepatitis C with coma
A705000	Viral hepatitis C without hepatic coma
A707200	Chronic viral hepatitis C
A70z000	Hepatitis C
ZV02C00	Hepatitis C carrier
2J11.00	Hepatitis C immune
43X3.00	Hepatitis C antibody test positive
65Q7.00	Viral hepatitis carrier with GP comment of ‘hepatitis C’
A705400	Hepatitis non-A, non-B
2J1..00^*	Hepatitis C status

This HCV diagnostic code was added following manual review. When present with a free text comment for a positive finding, this code identified additional cases of HCV infection. This code was not included in the analysis of the positive predictive value of the HCV diagnostic codes.