ICD-10-CM 2027
ICD-10 code for gallbladder cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › gallbladder”. Page updated September 29, 2026.
About coding gallbladder cyst
The ICD-10-CM code for gallbladder cyst is K82.8 (Other specified diseases of gallbladder).
Within K82, choose K82.8 (Other specified diseases of gallbladder) only when documentation doesn't support a more specific option: obstruction of gallbladder (K82.0), hydrops of gallbladder (K82.1), perforation of gallbladder (K82.2), fistula of gallbladder (K82.3), Cholesterolosis of gallbladder (K82.4), disease of gallbladder, unspecified (K82.9) and disorders of gallbladder in diseases classified elsewhere (K82.A).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
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 cyst ICD-10 codes
What is the ICD-10 code for gallbladder cyst?
- K82.8 — Other specified diseases of gallbladder.
Is K82.8 billable?
- Yes. K82.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K82.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K82.8 as a principal diagnosis.
Is K82.8 a CC or MCC?
- No. K82.8 is neither a CC nor an MCC under MS-DRG v44.0.