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Table 3 ICD codes used to define chronic conditions

From: HCV-infected individuals have higher prevalence of comorbidity and multimorbidity: a retrospective cohort study

Condition

ICD-O (topographical codes)

ICD-9

ICD-10

Cancer (any) (OCR – 10 year lookback)

 Hepatocellular cancer

8170, 8171, 8172, 8173, 8174, 8175

 

C22.0

Mental health diagnoses (10 year lookback for hospitalizations, 2 year lookback for OHIP billings)

 Non-psychotic mood and anxiety disordersa

 

296, 300, 309, 311

F30, F31, F32, F33, F341, F348, F349, F38, F39, F40, F41, F42, F431, F432, F438, F44, F450, F451, F452, F48, F530, F680, F930, F99

 Other mental illnessesa (including schizophrenia, delusions, and other psychoses; personality disorders;)

 

291, 292, 295, 297, 298, 299, 301, 302, 305, 306, 307, 313, 314, 315, 319;

F2, F04, F050, F058, F059, F060, F061, F062, F063, F064, F07, F08, F340, F35, F36, F37, F430, F439, F453, F454, F458, F46, F47, F49, F50, F51, F52, F531, F538, F539, F54, F55, F56, F57, F58, F59, F60, F61, F62, F63, F64, F65, F66, F67, F681, F688, F69, F7, F8, F90, F91, F92, F931, F932, F933, F938, F939, F94, F95, F96, F97, F98

 Substance use disordera (10 year lookback for hospitalizations)

 

303, 304

F10-F14, F16, F18, F19

Liver failure (one code ever is sufficient for diagnosis)

 Hepatic coma

 

572.2

 

 Hepatorenal syndrome

 

572.4

 

 Varices with bleeding all diagnoses

 

456.0

 

 Esophageal varices – other diseases with bleeding

 

456.2

 

 Ascites

 

789.5

 

 Peritonitis

 

567.2

 

 Hepatic failure NEC

  

K72

 Acute and subacute hepatic failure

  

K72.0

 Acute and subacute hepatic failure without coma

  

K72.00

 Acute and subacute hepatic failure with coma

  

K72.01

 Chronic hepatic failure

  

K72.1

 Chronic hepatic failure without coma

  

K72.10

 Chronic hepatic failure with coma

  

K72.11

 Hepatic failure, unspecified

  

K72.9

 Hepatic failure, unspecified without coma

  

K72.90

 Hepatic failure, unspecified with coma

  

K72.91

 Oesophageal varices with bleeding

  

I85

 Oesophageal varices with bleeding in diseases classified elsewhere

  

I98.3

 Ascites

  

R18

 Peritonitis

  

K65

Liver transplant (one code ever is sufficient for diagnosis)

 Liver transplant status

 

V42.7

 

 Liver transplant status

  

Z94.4

 Complications of liver transplant

  

T86.4

 Liver transplant rejection

  

T86.41

 Liver transplant failure

  

T86.42

 Liver transplant infection

  

T86.43

  1. auses the ICD codes found in HSPRN multimorbidity SAS macro