Is K51.31 a billable code?
No. K51.31 is a header code that groups 6 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
K51.31: Ulcerative (chronic) rectosigmoiditis with complications
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
K51.31 groups related diagnoses under ulcerative (chronic) rectosigmoiditis with complications. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under K51.31
- K51.311Ulcerative (chronic) rectosigmoiditis with rectal bleeding
- K51.312Ulcerative (chronic) rectosigmoiditis with intestinal obstruction
- K51.313Ulcerative (chronic) rectosigmoiditis with fistula
- K51.314Ulcerative (chronic) rectosigmoiditis with abscess
- K51.318Ulcerative (chronic) rectosigmoiditis with other complication
- K51.319Ulcerative (chronic) rectosigmoiditis with unspecified complications
Other codes in K51.3 Ulcerative (chronic) rectosigmoiditis
K51.31 questions
What does K51.31 mean?
K51.31 is the ICD-10-CM code for Ulcerative (chronic) rectosigmoiditis with complications. It is in chapter 11, Diseases of the digestive system (K00-K95).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.