2022 ICD-10-CM Diagnosis Code K81.0

Acute cholecystitis

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • K81.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM K81.0 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of K81.0 - other international versions of ICD-10 K81.0 may differ.
Applicable To
  • Abscess of gallbladder
  • Angiocholecystitis
  • Emphysematous (acute) cholecystitis
  • Empyema of gallbladder
  • Gangrene of gallbladder
  • Gangrenous cholecystitis
  • Suppurative cholecystitis
The following code(s) above K81.0 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 K81.0:
  • K00-K95
    2022 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
  • K81
    ICD-10-CM Diagnosis Code K81


      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • cholecystitis with cholelithiasis (K80.-)
    Use Additional
    • code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2)
Approximate Synonyms
  • Abscess, pericholecystic
  • Acute cholecystitis (inflamed gallbladder)
  • Acute gangrenous cholecystitis
  • Acute gangrenous cholecystitis (inflamed gallbladder)
  • Acute suppurative cholecystitis
  • Acute suppurative cholecystitis (inflamed gallbladder)
  • Pericholecystic abscess
Clinical Information
  • Acute inflammation of the gallbladder wall. It is characterized by the presence of abdominal pain; fever; and leukocytosis. Gallstone obstruction of the cystic duct is present in approximately 90% of the cases.
  • Presence of pus in the gallbladder.
ICD-10-CM K81.0 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 444 Disorders of the biliary tract with mcc
  • 445 Disorders of the biliary tract with cc
  • 446 Disorders of the biliary tract without cc/mcc

Convert K81.0 to ICD-9-CM

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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change

Diagnosis Index entries containing back-references to K81.0:
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) L02.91
    ICD-10-CM Diagnosis Code L02.91

    Cutaneous abscess, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • gallbladder K81.0
  • Cholecystitis K81.9
    ICD-10-CM Diagnosis Code K81.9

    Cholecystitis, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    • acute (emphysematous) (gangrenous) (suppurative) K81.0
  • Empyema (acute) (chest) (double) (pleura) (supradiaphragmatic) (thorax) J86.9
    ICD-10-CM Diagnosis Code J86.9

    Pyothorax without fistula

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Abscess of pleura
    • Abscess of thorax
    • Empyema (chest) (lung) (pleura)
    • Fibrinopurulent pleurisy
    • Purulent pleurisy
    • Pyopneumothorax
    • Septic pleurisy
    • Seropurulent pleurisy
    • Suppurative pleurisy
    • gallbladder K81.0
  • Gallbladder - see also condition
    • acute K81.0
  • Septic - see condition
    • gallbladder K81.0 (acute)
  • Suppuration, suppurative - see also condition
    • gallbladder K81.0 (acute)

ICD-10-CM Codes Adjacent To K81.0
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
K82.8 Other specified diseases of gallbladder

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