K63.1 Perforation of intestine (nontraumatic)

ICD-10-CM K63.1: Perforation of intestine (nontraumatic)

ICD-10-CM code K63.1 represents the diagnosis of perforation of intestine, nontraumatic. Official terminology sources map this code to the 2025 ICD-10-CM system and link it to SNOMED CT concept 50008003. Medicare billing and coding articles include K63.1 within intestinal disease code lists, while a third-party reference provides clinical definitions. 1 2 3 4

Plain-language overview

The ICD-10-CM code K63.1 identifies a nontraumatic perforation of the intestine. A separate source defines the broader concept of intestinal perforation as a rupture in the wall of the small or large intestine due to traumatic or pathologic processes. 1 2 3 4

What this code represents

The official display label for K63.1 is perforation of intestine (nontraumatic). The EVS Explore source confirms this exact label for the 2025 ICD-10-CM edition and provides a cross-map to the SNOMED CT concept identified by code 50008003. 2

A third-party clinical reference defines an intestinal perforation as an opening or penetration through the wall of the intestines. This same source specifies that such a rupture can result from either traumatic or pathologic processes. 4

Coding details

The K63.1 code appears in an alphabetical list of intestinal diagnoses alongside K63.0, which designates an abscess of intestine, and K63.2. This placement is documented identically in two separate Medicare billing and coding articles. 1 3

A historical coding reference links the ICD-10-CM code K63.1 to the previous ICD-9-CM diagnosis code 569.83. This mapping specifically applies to the condition described as perforation of intestine, nontraumatic. 4

Documentation considerations

The supplied sources establish that K63.1 is a diagnosis code for nontraumatic intestinal perforation, but they do not provide specific clinical documentation elements. The third-party reference notes that the general definition of intestinal perforation includes ruptures due to traumatic or pathologic processes. 1 2 3 4

Coverage and utilization context

The K63.1 diagnosis code is listed in Medicare billing and coding articles concerning colonoscopy, sigmoidoscopy, and proctosigmoidoscopy procedures. These articles enumerate K63.1 within a broader index of diagnosis codes relevant to these specific services. 1 3

What the sources add

Official government terminology sources provide the exact ICD-10-CM label and SNOMED CT mapping for K63.1, while Medicare articles establish its inclusion in procedure-related billing code lists. A separate third-party reference contributes a clinical definition and an ICD-9-CM historical mapping. 1 2 3 4

Two Medicare articles list K63.1 identically between K63.0 and K63.2, but they appear in different publications covering colonoscopy and sigmoidoscopy coding. The third-party source provides a descriptive definition of intestinal perforation that the official terminology sources omit. 1 3 4

Sources

1. Article - Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy (A56632) — cms.gov; accessed 2026-07-25.
2. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.
3. Article - Billing and Coding: Diagnostic and Therapeutic Colonoscopy (A57343) — cms.gov; accessed 2026-07-25.
4. ICD-9-CM Diagnosis Code 569.83 : Perforation of intestine — icd9data.com; accessed 2026-07-25.