ICD-10-CM 2027
ICD-10 code for intestine erosion
From the official ICD-10-CM alphabetic index entry “Erosion › intestine”. Page updated September 29, 2026.
About coding intestine erosion
The ICD-10-CM code for intestine erosion is K63.3 (Ulcer of intestine).
Within K63 (other diseases of intestine), K63.3 is specifically for ulcer of intestine. Related codes cover abscess of intestine (K63.0), perforation of intestine (nontraumatic) (K63.1), fistula of intestine (K63.2), 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 K63.3 together with the conditions in its Excludes1 note: duodenal ulcer (K26.-), gastrointestinal ulcer (K28.-), gastrojejunal ulcer (K28.-), jejunal ulcer (K28.-) and 4 more.
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Don't confuse with (Excludes1 for K63.3)
Common questions about intestine erosion ICD-10 codes
What is the ICD-10 code for intestine erosion?
- K63.3 — Ulcer of intestine.
Is K63.3 billable?
- Yes. K63.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K63.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K63.3 as a principal diagnosis.
Is K63.3 a CC or MCC?
- K63.3 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.