K73 – Chronic hepatitis, not elsewhere classified

ICD-10-CM 2027 diagnosis code · Diseases of liver

Non-billable header

ICD-10-CM code K73

Code: K73 (claims format: K73)
Description: Chronic hepatitis, not elsewhere classified
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 11. Diseases of the digestive system (K00-K95)
Block: K70-K77 Diseases of liver

Billable codes under K73

K73 is a header code and cannot be used on claims. Choose the most specific code:

Notes for K73

Excludes1 (not coded here):

alcoholic hepatitis (chronic) (K70.1-)
drug-induced hepatitis (chronic) (K71.-)
granulomatous hepatitis (chronic) NEC (K75.3)
reactive, nonspecific hepatitis (chronic) (K75.2)
viral hepatitis (chronic) (B15-B19)

Use additional code:

code, if applicable, for ascites (R18.8)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block K70-K77

Excludes1 (not coded here):

jaundice NOS (R17)

Excludes2 (not included here):

hemochromatosis (E83.11-)
Reye's syndrome (G93.7)
viral hepatitis (B15-B19)
Wilson's disease (E83.01)

Frequently asked questions

What is ICD-10 code K73?

K73 is the ICD-10-CM code for chronic hepatitis, not elsewhere classified, in the block K70-K77 (Diseases of liver).

Is K73 a billable code?

No. K73 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.