MCMedicalCodingSoftware
K81

K81: Cholecystitis

Non-billable headerICD-10-CM

K81 is a non-billable header ICD-10-CM code for cholecystitis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • cholecystitis with cholelithiasis (K80.-)

Use additional code

Add a secondary code to capture the detail described below.

  • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)

Other codes that can never be billed with K81

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • K82.4Cholesterolosis of gallbladder

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead K81

4 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.