ICD-10-CM 2027
ICD-10 code for gallbladder mucocele
From the official ICD-10-CM alphabetic index entry “Mucocele › gallbladder”. Page updated September 29, 2026.
About coding gallbladder mucocele
The ICD-10-CM code for gallbladder mucocele is K82.1 (Hydrops of gallbladder).
Within K82 (other diseases of gallbladder), K82.1 is specifically for hydrops of gallbladder. Related codes cover obstruction of gallbladder (K82.0), perforation of gallbladder (K82.2), fistula of gallbladder (K82.3), Cholesterolosis of gallbladder (K82.4), other specified diseases of gallbladder (K82.8), disease of gallbladder, unspecified (K82.9) and disorders of gallbladder in diseases classified elsewhere (K82.A).
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.
In MS-DRG v44.0, it is part of the grouping logic for DRG 444 (Disorders of the Biliary Tract with MCC, relative weight 1.6665), DRG 445 (Disorders of the Biliary Tract with CC, relative weight 1.0872) and DRG 446 (Disorders of the Biliary Tract without CC/MCC, relative weight 0.8124), in MDC 07 (Diseases and Disorders of the Hepatobiliary System and Pancreas), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about gallbladder mucocele ICD-10 codes
What is the ICD-10 code for gallbladder mucocele?
- K82.1 — Hydrops of gallbladder.
Is K82.1 billable?
- Yes. K82.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K82.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K82.1 as a principal diagnosis.
Is K82.1 a CC or MCC?
- K82.1 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.