All ICD10 Codes

K51.9

Non-Billable
ChapterK00–K95
Ranksubcategory
Official Description

Ulcerative colitis, unspecified

Use a more specific code (1 billable, 1 non-billable)
K51.90Ulcerative colitis, unspecified, without complicationsK51.91Ulcerative colitis, unspecified, with complicationshas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 11: Diseases of the Digestive System (K00-K95).
General instructions are available for the parent sections:
View CH11 NotesView K50-K52 NotesView K51 Notes

Clinical Hierarchy

BillableHas subcodes
CH11Diseases of the digestive system (K00-K95)
K50-K52Noninfective enteritis and colitis (K50-K52)
K51Ulcerative colitis
K51.9Ulcerative colitis, unspecifiedNot billable
K51.90Ulcerative colitis, unspecified, without complicationsBillable
K51.91Ulcerative colitis, unspecified, with complicationsSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to K51.9:

categoryK51
Ulcerative colitis
View context instructions
blockK50-K52
Noninfective enteritis and colitis (K50-K52)
View context instructions
chapterCH11
Diseases of the digestive system (K00-K95)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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