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. 2017 Oct 19;12(10):e0186643. doi: 10.1371/journal.pone.0186643

Table 1. International Classification of Diseases, ninth edition codes for preexisting medical conditions and risk factors for cholangiocarcinoma.

Metabolic conditions ICD-9 Codes
 Non-alcoholic fatty liver disease 571.8
 Overweight or obesity 278.0, 278.00, 278.01, 278.02, 278.1, V77.8, 783.1
  Obesity 278.00, 278.01
 Dyslipidemia 272.0, 272.1, 272.2, 272.4, 272.5, 272.7, 272.9
 Hypertension 401, 402, 403, 404
 Type 2 diabetes/impaired fasting glucose 250.00, 250.02, 250.10, 250.12, 250.20, 250.22, 250.30, 250.32, 250.40, 250.42, 250.50, 250.52, 250.60, 250.62, 250.70, 250.72, 250.80, 250.82, 250.90, 250.92, 790.2
Viral hepatitis
 Hepatitis B virus infection 070.2, 070.3, 070.42, 070.52, V0261
 Hepatitis C virus infection 070.41, 070.44, 070.51, 070.54, 070.7, V02.62
 Unspecified viral hepatitis 070.49, 070.59, 070.9
Bile duct conditions
 Caroli disease 751.61
 Biliary cirrhosis 571.6
 Cholangitis 576.1
 Cholecystectomy 51.2, 576.0
 Choledochal cysts 751.69
 Cholelithiasis 574.00, 574.01, 574.10, 574.11, 574.20, 574.21
 Choledocholithiasis 574.30, 574.31, 574.40, 574.41, 574.50, 574.51
Autoimmune/inflammatory conditions
 Autoimmune hepatitis 571.42
 Rheumatoid arthritis 714.0, 714.2, 714.30, 714.31, 714.32, 714.33
 Reactive arthritis 099.3, 711.10, 711.11, 711.12, 711.13, 711.14, 711.15, 711.16, 711.17, 711.18, 711.19
 Celiac disease 579.0
 Type 1 diabetes 250.01, 250.03, 250.11, 250.13, 250.21, 250.23, 250.31, 250.33, 250.41, 250.43, 250.51, 250.53, 250.61, 250.63, 250.71, 250.73, 250.81, 250.83, 250.91, 250.93
 Crohn’s disease 555.0, 555.1, 555.2, 555.9
 Ulcerative colitis 556.0, 556.1, 556.2, 556.3, 556.4, 556.5, 556.6, 556.8, 556.9
 Chronic pancreatitis 577.1
 Gout 274.00, 274.01, 274.02, 274.03, 274.10, 274.19, 274.81, 274.82, 274.89, 274.9
 Lupus 710.0
 Thyrotoxicosis 242.40, 242.41, 242.80, 242.81, 242.90, 242.91
Miscellaneous conditions
 Alcohol-related disorders 571.0, 571.1, 571.2, 571.3, 571.5, 571.6, 303, 305.0, V11.3, V79.1, 291
 Smoking V15.82, 305.1, 989.84
 Nonspecific cirrhosis 571.5, 571.6
 Human immunodeficiency virus V08, 042, 043, 044
 Duodenal/gastric ulcers 531, 532, 533
 Hemochromatosis 275.0