K81
Non-billableCholecystitis
Cholecystitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Use Additional Code
Additional codes that should follow this code
Child Codes (4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(13)
UMLS
- CholecystitisC0008325
- Cholecystitis (disorder)C0008325
- Cholecystitis NOSC0008325
- Cholecystitis, unspecifiedC0008325
- GALLBLADDER INFLAMMC0008325
- Gallbladder InflammationC0008325
- Gallbladder inflammationC0008325
- Inflamed gallbladderC0008325
- Inflammation gallbladderC0008325
- Inflammation, GallbladderC0008325
- cholecystitisC0008325
- gall bladder inflammationC0008325
- gallbladder inflammationC0008325
Frequently Asked Questions
What is the ICD-10 code for cholecystitis?
The ICD-10-CM code for cholecystitis is K81. The full clinical description is "Cholecystitis". K81 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code K81 mean?
ICD-10-CM code K81 represents “Cholecystitis”. It is classified under Chapter 11: Diseases of the Digestive System and is a non-billable header code. Use a more specific child code for billing purposes.
Is K81 a billable code?
No, K81 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under K81.
What chapter is K81 in?
K81 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K81?
K81 has Excludes1 notes indicating codes that cannot be used together with it, including: cholecystitis with cholelithiasis (K80.-).
What are the subcategories under K81?
K81 has 4 child codes, including: K81.0 (Acute cholecystitis), K81.1 (Chronic cholecystitis), K81.2 (Acute cholecystitis with chronic cholecystitis), K81.9 (Cholecystitis, unspecified).
Are additional codes required with K81?
Yes, when using K81, also report: code if applicable for associated gangrene of gallbladder (K82.A1), or perforation of gallbladder (K82.A2).
What are the UMLS CUIs for K81?
K81 is linked to 1 UMLS Concept Unique Identifier: C0008325. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does K81 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like cholecystitis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of K81?
K81 maps to the ICD-11 code: DC12.Z (Cholecystitis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.