Chronic hepatitis, not elsewhere classified
In Diseases of liver (K70-K77), chapter 11: Diseases of the Digestive System
5 billable codes under K73: none are a CC or MCC; all map to HCC 65 (Chronic Hepatitis).An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Excludes1: not coded here, use a different code
Use additional code: add a second code for this, listed after this one
- code, if applicable, for ascites (R18.8)
Also applies, from Diseases of liver (K70-K77)
These notes sit on K70-K77 and apply to every code under it, including K73.
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
There are no chapter-specific rules for Chapter 11 yet, so the general rules in Section I.B apply.
All codes under K73
K73 can't be used on a claim. Pick a billable code below; grey headings group them.
K73 MS-DRGs
As the principal diagnosis, all 5 billable codes under K73 group to MS-DRG 441, 442, or 443 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Other codes that refer to K73
Notes on these codes point to K73.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Hepatitis
Hepatitis is inflammation of the liver. Inflammation is swelling that happens when tissues of the body are injured or infected. It can damage your liver. This swelling and damage can affect how well your liver functions.
Read more about hepatitis on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.