2020 ICD-10-CM Diagnosis Code K81

Cholecystitis

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • K81 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM K81 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K81 - other international versions of ICD-10 K81 may differ.
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code if applicable for associated gangrene of gallbladder (
    ICD-10-CM Diagnosis Code K82.A1

    Gangrene of gallbladder in cholecystitis

      2019 - New Code 2020 Billable/Specific Code Manifestation Code
    K82.A1
    ), or perforation of gallbladder (
    ICD-10-CM Diagnosis Code K82.A2

    Perforation of gallbladder in cholecystitis

      2019 - New Code 2020 Billable/Specific Code Manifestation Code
    K82.A2
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K81. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • cholecystitis with cholelithiasis (
    ICD-10-CM Diagnosis Code K80
    • K80 Cholelithiasis
      • K80.0 Calculus of gallbladder with acute cholecysti...
        • K80.00 Calculus of gallbladder with acute cholecysti...
        • K80.01 Calculus of gallbladder with acute cholecysti...
      • K80.1 Calculus of gallbladder with other cholecysti...
        • K80.10 Calculus of gallbladder with chronic cholecys...
        • K80.11 Calculus of gallbladder with chronic cholecys...
        • K80.12 Calculus of gallbladder with acute and chroni...
        • K80.13 Calculus of gallbladder with acute and chroni...
        • K80.18 Calculus of gallbladder with other cholecysti...
        • K80.19 Calculus of gallbladder with other cholecysti...
      • K80.2 Calculus of gallbladder without cholecystitis...
        • K80.20 Calculus of gallbladder without cholecystitis...
        • K80.21 Calculus of gallbladder without cholecystitis...
      • K80.3 Calculus of bile duct with cholangitis
        • K80.30 Calculus of bile duct with cholangitis, unspe...
        • K80.31 Calculus of bile duct with cholangitis, unspe...
        • K80.32 Calculus of bile duct with acute cholangitis ...
        • K80.33 Calculus of bile duct with acute cholangitis ...
        • K80.34 Calculus of bile duct with chronic cholangiti...
        • K80.35 Calculus of bile duct with chronic cholangiti...
        • K80.36 Calculus of bile duct with acute and chronic ...
        • K80.37 Calculus of bile duct with acute and chronic ...
      • K80.4 Calculus of bile duct with cholecystitis
        • K80.40 Calculus of bile duct with cholecystitis, uns...
        • K80.41 Calculus of bile duct with cholecystitis, uns...
        • K80.42 Calculus of bile duct with acute cholecystiti...
        • K80.43 Calculus of bile duct with acute cholecystiti...
        • K80.44 Calculus of bile duct with chronic cholecysti...
        • K80.45 Calculus of bile duct with chronic cholecysti...
        • K80.46 Calculus of bile duct with acute and chronic ...
        • K80.47 Calculus of bile duct with acute and chronic ...
      • K80.5 Calculus of bile duct without cholangitis or ...
        • K80.50 Calculus of bile duct without cholangitis or ...
        • K80.51 Calculus of bile duct without cholangitis or ...
      • K80.6 Calculus of gallbladder and bile duct with ch...
        • K80.60 Calculus of gallbladder and bile duct with ch...
        • K80.61 Calculus of gallbladder and bile duct with ch...
        • K80.62 Calculus of gallbladder and bile duct with ac...
        • K80.63 Calculus of gallbladder and bile duct with ac...
        • K80.64 Calculus of gallbladder and bile duct with ch...
        • K80.65 Calculus of gallbladder and bile duct with ch...
        • K80.66 Calculus of gallbladder and bile duct with ac...
        • K80.67 Calculus of gallbladder and bile duct with ac...
      • K80.7 Calculus of gallbladder and bile duct without...
        • K80.70 Calculus of gallbladder and bile duct without...
        • K80.71 Calculus of gallbladder and bile duct without...
      • K80.8 Other cholelithiasis
        • K80.80 …… without obstruction
        • K80.81 …… with obstruction
    K80.-
    )
The following code(s) above K81 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K81:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
Clinical Information
  • A disorder characterized by inflammation involving the gallbladder. It may be associated with the presence of gallstones.
  • An acute or chronic inflammation involving the gallbladder wall. It may be associated with the presence of gallstones.
  • Inflammation of the gallbladder; generally caused by impairment of bile flow, gallstones in the biliary tract, infections, or other diseases.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to K81:
  • Code First: K82.A
    ICD-10-CM Diagnosis Code K82.A

    Disorders of gallbladder in diseases classified elsewhere

      2019 - New Code 2020 Non-Billable/Non-Specific Code
    Code First
  • Type 1 Excludes: K82.4
    ICD-10-CM Diagnosis Code K82.4

    Cholesterolosis of gallbladder

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Strawberry gallbladder
    Type 1 Excludes
    • cholesterolosis of gallbladder with cholecystitis (K81.-)
    • cholesterolosis of gallbladder with cholelithiasis (K80.-)
ICD-10-CM Codes Adjacent To K81
K80.64 Calculus of gallbladder and bile duct with chronic cholecystitis without obstruction
K80.65 Calculus of gallbladder and bile duct with chronic cholecystitis with obstruction
K80.66 Calculus of gallbladder and bile duct with acute and chronic cholecystitis without obstruction
K80.67 Calculus of gallbladder and bile duct with acute and chronic cholecystitis with obstruction
K80.7 Calculus of gallbladder and bile duct without cholecystitis
K80.70 …… without obstruction
K80.71 …… with obstruction
K80.8 Other cholelithiasis
K80.80 …… without obstruction
K80.81 …… with obstruction
K81 Cholecystitis
K81.0 Acute cholecystitis
K81.1 Chronic cholecystitis
K81.2 Acute cholecystitis with chronic cholecystitis
K81.9 Cholecystitis, unspecified
K82 Other diseases of gallbladder
K82.0 Obstruction of gallbladder
K82.1 Hydrops of gallbladder
K82.2 Perforation of gallbladder
K82.3 Fistula of gallbladder
K82.4 Cholesterolosis of gallbladder

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.