Table 1. Definition HAV-associated disease based on ICD-10 codes [21].

Disease outcome		ICD-10 code
Confirmed cases and deaths due to HAV	Acute hepatitis A	B15
	Hepatitis A with hepatic coma	B15.0
	Hepatitis A without hepatic coma	B15.9
Complications due to HAV infectiona	Icteric syndrome	R17
	(Fulminant) Hepatic failure	K72.1, K72.9
	Acute liver failure	K72.0
	Liver transplant	T86.4

HAV: Hepatitis A virus; ICD-10: International Statistical Classification of Diseases and Related Health Problems, Tenth Revision.

^a Served as primary diagnosis when identifying a case of complication, which is subsequently correlated with the diagnoses specific to HAV infection.