ICD-10-CM 2027
ICD-10 code for cecum rupture
From the official ICD-10-CM alphabetic index entry “Rupture, ruptured › cecum (with peritonitis)”. Page updated September 29, 2026.
About coding cecum rupture
The ICD-10-CM code for cecum rupture is K65.0 (Generalized (acute) peritonitis). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K65.0.
Within K65 (peritonitis), K65.0 is specifically for generalized (acute) peritonitis. Related codes cover peritoneal abscess (K65.1), spontaneous bacterial peritonitis (K65.2), Choleperitonitis (K65.3), sclerosing mesenteritis (K65.4), other peritonitis (K65.8) and unspecified (K65.9).
Use an additional code (B95-B97), to identify infectious agent, if known.
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific cecum rupture codes (official index)
Common questions about cecum rupture ICD-10 codes
What is the ICD-10 code for cecum rupture?
- K65.0 — Generalized (acute) peritonitis. More specific codes apply when the documentation supports them: K35.33, S36.598.
What is the ICD-10 code for traumatic cecum rupture?
- S36.598 — Other injury of other part of colon (header code; choose a more specific subcode).
Is K65.0 billable?
- Yes. K65.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K65.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K65.0 as a principal diagnosis.
Is K65.0 a CC or MCC?
- K65.0 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.