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K51.30

Billable

Ulcerative (chronic) rectosigmoiditis without complications

HCC Category Mapping

V28HCC 81Ulcerative Colitis
0.000
V24HCC 35Inflammatory Bowel Disease
0.289
ESRDHCC 35Inflammatory Bowel Disease
0.000
RxHCCHCC 67Inflammatory Bowel Disease
0.000

What This Code Means

Chronic inflammation with ulcers affecting both the rectum and sigmoid colon (lower portions of the large intestine) without any additional complications.

Coding Tips

  • Confirm documentation specifies both rectum and sigmoid colon involvement
  • Use only when no complications such as bleeding, obstruction, or fistula are present

Clinical Significance

Ulcerative rectosigmoiditis without complications represents inflammation confined to the rectum and sigmoid colon — a moderately limited form of ulcerative colitis. This intermediate extent is clinically significant as it indicates disease beyond the rectum but not involving the entire colon, affecting treatment approach and surveillance intervals.

Documentation Requirements

  • Confirmed ulcerative colitis involving both the rectum and sigmoid colon via colonoscopy
  • Biopsy confirmation of ulcerative colitis histopathology
  • Documentation that inflammation does not extend beyond the sigmoid colon
  • Statement confirming no complications are present
  • Current treatment regimen and disease management plan
  • Colonoscopy surveillance schedule documentation

Commonly Confused Codes

Code Hierarchy

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