ICD-10-CM 2027 diagnosis code
K73Chronic hepatitis, not elsewhere classified
K73 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K73
K73 is the ICD-10-CM diagnosis code for chronic hepatitis, not elsewhere classified. It belongs to block K70-K77 (diseases of liver) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: K73.0 (classified), K73.1 (classified), K73.2 (classified), K73.8 (classified) and K73.9 (unspecified).
Don't report K73 together with the conditions in its Excludes1 note: alcoholic hepatitis (chronic) (K70.1-), drug-induced hepatitis (chronic) (K71.-), granulomatous hepatitis (chronic) NEC (K75.3), reactive, nonspecific hepatitis (chronic) (K75.2) and 1 more.
Use an additional code, if applicable, for ascites (R18.8).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under K73
Coding notes
- code, if applicable, for ascites (R18.8)
Notes that apply from higher levels
Instructions written at a parent level also apply to K73.
Broader instructions also apply from K70-K77 Diseases of liver and Chapter 11: Diseases of the digestive system.
Codes whose notes reference K73
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about K73
Is K73 billable?
- No. K73 is a header code. Report one of its more specific subcodes instead.