All ICD10 Codes

K63.3

Billable
ChapterK00–K95
Ranksubcategory
Official Description

Ulcer of intestine

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 11: Diseases of the Digestive System (K00-K95).

Instructional Notes

Includes
  • Primary ulcer of small intestine
Excludes1(Not coded here)
  • 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.-)
General instructions are available for the parent sections:
View CH11 Notes

Clinical Hierarchy

CH11Diseases of the digestive system (K00-K95)
K55-K64Other diseases of intestines (K55-K64)
K63Other diseases of intestine
K63.3Ulcer of intestine

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K63.3:

chapterCH11
Diseases of the digestive system (K00-K95)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to K63.3. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

8 raw paths
Erosion1 unique routes
intestine→K63.3
Stercoraceous, stercoral ulcer1 unique routes
Direct index entry→K63.3
Ulcer, ulcerated, ulcerating, ulceration, ulcerative6 unique routes
intestine, intestinal→K63.3(3 variants)
primary, small intestine→K63.3
stercoraceous, stercoral→K63.3
primary of intestine→K63.3
rectosigmoid→K63.3
stercoraceous, stercoral→K63.3

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 393
Other Digestive System Diagnoses with MCC
DRG 394
Other Digestive System Diagnoses with CC
DRG 395
Other Digestive System Diagnoses without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Ulcer of intestine.

Search PCS Codes