ICD-10-CM 2027 diagnosis code

K80.4Calculus of bile duct with cholecystitis

Not billable — use a more specific code

K80.4 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About K80.4

K80.4 is the ICD-10-CM diagnosis code for calculus of bile duct with cholecystitis. It belongs to category K80 (cholelithiasis), block K80-K87 (disorders of gallbladder, biliary tract and pancreas) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

Within K80 (cholelithiasis), K80.4 is specifically for calculus of bile duct with cholecystitis. Related codes cover calculus of gallbladder with acute cholecystitis (K80.0), calculus of gallbladder with other cholecystitis (K80.1), calculus of gallbladder without cholecystitis (K80.2), calculus of bile duct with cholangitis (K80.3), calculus of bile duct without cholangitis or cholecystitis (K80.5), calculus of gallbladder and bile duct with cholecystitis (K80.6), calculus of gallbladder and bile duct without cholecystitis (K80.7) and other cholelithiasis (K80.8).

To report this condition, pick the subcode that matches the documentation: K80.40 (unspecified, without obstruction), K80.41 (unspecified, with obstruction), K80.42 (obstruction), K80.43 (obstruction), K80.44 (obstruction), K80.45 (obstruction), K80.46 (obstruction) and K80.47 (obstruction).

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

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under K80.4

Coding notes

Applicable toConditions and synonyms classified to this code

Any condition listed in K80.5 with cholecystitis (with cholangitis)

Use additional codeAdd a secondary code to fully describe the condition

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

Code alsoTwo codes may be needed; sequencing depends on circumstances

, if applicable, fistula of bile duct (K83.3)

Notes that apply from higher levels

Instructions written at a parent level also apply to K80.4.

› From K80 Cholelithiasis

Excludes1

retained cholelithiasis following cholecystectomy (K91.86)

Broader instructions also apply from Chapter 11: Diseases of the digestive system.

Codes whose notes reference K80.4

K83.0Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about K80.4

Is K80.4 billable?: No. K80.4 is a header code. Report one of its more specific subcodes instead.