K51.30
Billable codeUlcerative (chronic) rectosigmoiditis without complications
The ICD-10 code for ulcerative (chronic) rectosigmoiditis without complications is K51.30.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Ulcerative (chronic) rectosigmoiditis NOS
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- K51.31Ulcerative (chronic) rectosigmoiditis with complicationsnon-billable header
- K51.30Ulcerative (chronic) rectosigmoiditis without complications
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 5563Approximate match
Associated MS-DRGs
K51.30 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.