ICD-10-CM K37 is the diagnosis code for Unspecified appendicitis. This code falls under the section "Diseases of appendix" within Chapter 11 — Diseases of the digestive system (K00-K95). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as K37. They are mutually exclusive:
Understanding where K37 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, K37 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
K37 is the ICD-10-CM diagnosis code for "Unspecified appendicitis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
K37 is located in Section K35-K38 — "Diseases of appendix" within Chapter 11 of the ICD-10-CM Tabular List.
Use K37 when the patients documented diagnosis matches "Unspecified appendicitis" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Unspecified appendicitis is K37.
Yes, K37 can be used as a primary diagnosis code since it is billable and specific.
K37 is in Chapter 11 of the ICD-10-CM Tabular List.
Type 1 Excludes for K37 include: unspecified appendicitis with peritonitis (K35.2-, K35.3-).
Yes, K37 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.