K63.3

ICD-10Billable

Ulcer of intestine

Official ICD-10-CM descriptor (FY2026)

Ulcer of intestine

K63.3 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Primary ulcer of small intestine

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • duodenal ulcer (K26.-)
  • gastrointestinal ulcer (K28.-)
  • gastrojejunal ulcer (K28.-)
  • jejunal ulcer (K28.-)
  • peptic ulcer, site unspecified (K27.-)
  • ulcer of intestine with perforation (K63.1)
  • ulcer of anus or rectum (K62.6)
  • ulcerative colitis (K51.-)

Related codes in K63

Where this code sits

Parent code
K63

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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