K37
BillableUnspecified appendicitis
Unspecified appendicitis
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
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(33)
SNOMED CT
UMLS
Clinical Terms
- Appendicitis, unqualified
- Retrocecal appendicitis
- Crohn disease of appendix
- Appendicitis
- Focal appendicitis
- Retrocaecal appendicitis
- Acute Appendicitis
- Neutropenic typhlitis
- Typhlitis
- Cecitis
- Caecitis
- Periappendicitis
- Appendicitis (disorder)
- Unqualified appendicitis
- Retroileal appendicitis
Frequently Asked Questions
What is the ICD-10 code for unspecified appendicitis?
The ICD-10-CM code for unspecified appendicitis is K37. The full clinical description is "Unspecified appendicitis". K37 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code K37 mean?
ICD-10-CM code K37 represents “Unspecified appendicitis”. It is classified under Chapter 11: Diseases of the Digestive System and is a billable/specific code that can be used on a claim.
Is K37 a billable code?
Yes, K37 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is K37 in?
K37 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K37?
K37 has Excludes1 notes indicating codes that cannot be used together with it, including: unspecified appendicitis with peritonitis (K35.2-, K35.3-).
What SNOMED CT codes does K37 map to?
K37 maps to 8 SNOMED CT concepts: 74400008, 61564002, 733157003, 123601005, 3899003, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for K37?
K37 is linked to 1 UMLS Concept Unique Identifier: C0003615. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does K37 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unspecified appendicitis 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 K37?
K37 maps to the ICD-11 code: DB10.Z (Appendicitis, 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.