2026 ICD-10-CM Diagnosis Code K82.8Other specified diseases of gallbladder

ICD-10-CM Codes›K00–K95›K80-K87›K82

ICD-10-CM K82.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

K82.8 is a billable ICD-10-CM diagnosis code for other specified diseases of gallbladder. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 444 through 446. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Biliary tract disease.

Code Identity

ICD-10-CM Code
K82.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified diseases of gallbladder
Short Description
Other specified diseases of gallbladder
Same as the full description in the CMS dataset.
Parent Code
K82
Other diseases of gallbladder

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK80-K87Disorders of gallbladder, biliary tract and pancreas
CategoryK82Other diseases of gallbladder
This CodeK82.8Other specified diseases of gallbladder

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Absent gallbladder function
  • Adenomyomatosis of gallbladder
  • Adhesion of bile duct
  • Adhesion of cystic duct
  • Adhesion of gallbladder
  • Adhesions of biliary tree
  • Aplasia of gallbladder
  • Aschoff-Rokitansky sinuses
  • Atony of gallbladder
  • Atrophy of bile duct
  • Atrophy of biliary tree
  • Atrophy of cystic duct
  • Atrophy of gallbladder
  • Biliary achalasia
  • Biliary dyskinesia
  • Congenital absence of gallbladder
  • Cyst of bile duct
  • Cyst of biliary tract
  • Cyst of cystic duct
  • Cyst of gallbladder
  • Cystic mucinous hypertrophy of gallbladder
  • Finding of appearance of gallbladder
  • Gallbladder enlarged
  • Gallbladder mass
  • Hemocholecyst
  • Hypertrophy of bile duct
  • Hypertrophy of biliary tract
  • Hypertrophy of cystic duct
  • Hypertrophy of gallbladder
  • Impaired contractility of gallbladder
  • Increased gallbladder contraction
  • Intramural calcification of gallbladder
  • Leakage of bile from gallbladder bed
  • Lesion of gallbladder
  • Mucocele of gallbladder
  • Nonfunctioning cystic duct
  • Nonfunctioning gallbladder
  • Poorly functioning gallbladder
  • Small gallbladder
  • Ulcer of bile duct
  • Ulcer of cystic duct
  • Ulcer of gallbladder
  • Ulceration of biliary tree

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Adhesions of cystic duct or gallbladder
  • Atrophy of cystic duct or gallbladder
  • Cyst of cystic duct or gallbladder
  • Dyskinesia of cystic duct or gallbladder
  • Hypertrophy of cystic duct or gallbladder
  • Nonfunctioning of cystic duct or gallbladder
  • Ulcer of cystic duct or gallbladder

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Acholia
    • Adhesions, adhesive(postinfective)
      • cystic duct
    • Adhesions, adhesive(postinfective)
      • gallbladder
    • Adhesions, adhesive(postinfective)
      • pericholecystic
    • Atresia, atretic
      • cystic duct
        • acquired
    • Atrophy, atrophic(of)
      • cystic duct
    • Atrophy, atrophic(of)
      • gallbladder
    • Calcification
      • gallbladder
    • Cholecystectasia
    • Cyst(colloid) (mucous) (simple) (retention)
      • cystic duct
    • Cyst(colloid) (mucous) (simple) (retention)
      • gallbladder
    • Deformity
      • cystic duct (congenital)
        • acquired
    • Deformity
      • gallbladder (congenital)
        • acquired
    • Dilatation
      • cystic duct (acquired)
    • Dilatation
      • gallbladder
    • Disease, diseased
      • gallbladder
        • specified NEC
    • Distension, distention
      • gallbladder
    • Dysfunction
      • cystic duct
    • Dysfunction
      • gallbladder
    • Dyskinesia
      • biliary (cystic duct or gallbladder)
    • Hypertrophy, hypertrophic
      • cystic duct
    • Hypertrophy, hypertrophic
      • gallbladder
    • Infarct, infarction
      • gallbladder
    • Malposition
      • gallbladder
    • Nonfunctioning
      • cystic duct
    • Nonfunctioning
      • gallbladder
    • Pouch
      • Hartmann's
    • Rokitansky-Aschoff sinuses(gallbladder)
    • Sinus
      • Rokitansky-Aschoff (gallbladder)
    • Torsion
      • cystic duct
    • Torsion
      • gallbladder
    • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
      • cystic duct
    • Ulcer, ulcerated, ulcerating, ulceration, ulcerative
      • gallbladder or duct

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG017
Biliary tract disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Biliary Dyskinesia

    a motility disorder characterized by biliary colic, absence of gallstones, and an abnormal gallbladder ejection fraction. it is caused by gallbladder dyskinesia and/or sphincter of oddi dysfunction.

Patient EducationClinical

Gallbladder Diseases

Your gallbladder is a pear-shaped organ under your liver. It stores bile, a fluid made by your liver to digest fat. As your stomach and intestines digest food, your gallbladder releases bile through a tube called the common bile duct. The duct connects your gallbladder and liver to your small intestine.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K82.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
575.8 Dis of gallbladder NEC
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About K82.8Overview

Is K82.8 (Other diseases of gallbladder) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified diseases of gallbladder on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does K82.8 group to?

When other specified diseases of gallbladder is the principal diagnosis on an inpatient stay, it groups to MS-DRG 444, 445, 446, with relative weights from 0.8273 to 1.6709 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of K82.8?

Under the General Equivalence Mappings, other specified diseases of gallbladder converts to ICD-9-CM 575.8 (dis of gallbladder NEC). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.