Epidemiology and natural history of Wilson’s disease in the Chinese: A territory-based study in Hong Kong between 2000 and 2016

Table 1 International classification of diseases-9 code for outcome and covariates

Impaired or abnormal liver function	573.8, 794.8
Hepatitis	573.3, 571.40, 571.41
Chronic liver disease	571.9, 573.9
Acute liver failure	570
Chronic liver failure	571.8
Hepatocellular carcinoma	155.0
Cirrhosis	571.5
Viral hepatitis B carrier	V02.61:0
Viral hepatitis C carrier	V02.62:0
Sequalae of chronic liver disease	572.8
Esophageal varices	456.0, 456.1
Gastric varices	456.8
Ascites	789.5
Spontaneous bacterial peritonitis	567.2
Portal hypertension	572.3
Splenomegaly/Hypersplenism	789.1, 789.2, 789.4
Hepatic encephalopathy	572.2
Hepatorenal syndrome	572.4
Liver transplantation	V42.7
Parkinsonism	332
Tremor	781.0
Dystonic disorder	333.6
Convulsion	780.32
Tics	307.20
Dementia	290
Bipolar affective disorder	296.7
Depression	296.2, 296.3, 311
Anxiety	300.0
Organic affective syndrome	293.83
Psychosis	295, 293.83
Personality disorder	301
Suicide	E950
Hemolytic anemia	283.10
Alcoholism	291, 571.0, 571.1, 571.2, 571.3, 303, 305.0, 980.8, 980.9
Obesity	278.0, 278.1
Diabetes mellitus	249, 250
Hypertension	401-405
Dysplipidemia	272.0-272.4