K51.31 Ulcerative (chronic) rectosigmoiditis with complications
Get what a quick lookup can't: the AI assistant for official-guideline questions, HCC risk-adjustment mappings (CMS-HCC V24/V28, RxHCC), FDA drug indications, and AHA Coding Clinic references for K51.31.
The ICD-10-CM code for Ulcerative (chronic) rectosigmoiditis with complications is K51.31 (FY2026). It is a non-billable category code — select a more specific code below for claims.
Classification
- Section
- K50-K52: Noninfective enteritis and colitis (K50-K52)
- Category K51
- 64 codes (49 billable)
- FY2026 Status
- Stable since FY2024
Official Coding Guidelines
Chapter 11 reserved for future expansion11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026
References
Cite This Page
Reference K51.31 with the canonical source and edition:
K51.31 — Ulcerative (chronic) rectosigmoiditis with complications. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/K51.31
Canonical URL: https://icd10codingpro.com/codes/K51.31