K51.311
✓ Billable
Ulcerative (chronic) rectosigmoiditis with rectal bleeding
ICD-10-CM · FY2026 · Diseases of the Digestive System
Code
K51.311
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Digestive System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code K51.311?
ICD-10-CM code K51.311 represents Ulcerative (chronic) rectosigmoiditis with rectal bleeding. It is a billable diagnosis code in the Diseases of the Digestive System chapter, effective October 1, 2025 – September 30, 2026.
Is K51.311 billable?
Yes. K51.311 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is K51.311 in?
K51.311 belongs to the Diseases of the Digestive System chapter (K00–K95) of ICD-10-CM.
Related codes in the K51 category
K51
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K51.0
Ulcerative (chronic) pancolitis
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K51.2
Ulcerative (chronic) proctitis
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K51.3
Ulcerative (chronic) rectosigmoiditis
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K51.4
Inflammatory polyps of colon
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K51.5
Left sided colitis
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K51.8
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K51.9
Ulcerative colitis, unspecified
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