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ICD-10-CM 2027

ICD-10 code for sigmoid nontraumatic rupture

K63.1

Perforation of intestine (nontraumatic)

✓ Billable / specificMCC — major complication/comorbidity

From the official ICD-10-CM alphabetic index entry “Rupture, ruptured › sigmoid (nontraumatic)”. Page updated September 29, 2026.

About coding sigmoid nontraumatic rupture

The ICD-10-CM code for sigmoid nontraumatic rupture is K63.1 (Perforation of intestine (nontraumatic)). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K63.1.

Within K63 (other diseases of intestine), K63.1 is specifically for perforation of intestine (nontraumatic). Related codes cover abscess of intestine (K63.0), fistula of intestine (K63.2), ulcer of intestine (K63.3), Enteroptosis (K63.4), polyp of colon (K63.5), other specified diseases of intestine (K63.8) and disease of intestine, unspecified (K63.9).

Don't report K63.1 together with the conditions in its Excludes1 note: perforation (nontraumatic) of duodenum (K26.-) and perforation (nontraumatic) of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8).

The conditions in its Excludes2 note aren't part of K63.1, but may be coded alongside it if the patient has both: perforation (nontraumatic) of appendix (K35.2-, K35.3-).

More specific sigmoid nontraumatic rupture codes (official index)

  • traumatic S36.593 — Other injury of sigmoid colon

Don't confuse with (Excludes1 for K63.1)

  • perforation (nontraumatic) of duodenum (K26.-)
  • perforation (nontraumatic) of intestine with diverticular disease (K57.0, K57.2, K57.4, K57.8)

Common questions about sigmoid nontraumatic rupture ICD-10 codes

What is the ICD-10 code for sigmoid nontraumatic rupture?

K63.1 — Perforation of intestine (nontraumatic). More specific codes apply when the documentation supports them: S36.593.

What is the ICD-10 code for traumatic sigmoid nontraumatic rupture?

S36.593 — Other injury of sigmoid colon (header code; choose a more specific subcode).

Is K63.1 billable?

Yes. K63.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can K63.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict K63.1 as a principal diagnosis.

Is K63.1 a CC or MCC?

K63.1 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.