ICD-10-CM 2027
ICD-10 code for acute gallbladder
From the official ICD-10-CM alphabetic index entry “Gallbladder › acute”. Page updated September 29, 2026.
About coding acute gallbladder
The ICD-10-CM code for acute gallbladder is K81.0 (Acute cholecystitis).
Within K81 (cholecystitis), K81.0 is specifically for acute cholecystitis. Related codes cover chronic cholecystitis (K81.1), acute cholecystitis with chronic cholecystitis (K81.2) and unspecified (K81.9).
Use an additional code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about acute gallbladder ICD-10 codes
What is the ICD-10 code for acute gallbladder?
- K81.0 — Acute cholecystitis.
Is K81.0 billable?
- Yes. K81.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K81.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K81.0 as a principal diagnosis.
Is K81.0 a CC or MCC?
- K81.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.