ICD-10-CM 2027
ICD-10 code for rectum ulcer
From the official ICD-10-CM alphabetic index entry “Ulcer, ulcerated, ulcerating, ulceration, ulcerative › rectum (sphincter) (solitary)”. Page updated September 29, 2026.
About coding rectum ulcer
The ICD-10-CM code for rectum ulcer is K62.6 (Ulcer of anus and rectum). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on K62.6.
Within K62 (other diseases of anus and rectum), K62.6 is specifically for ulcer of anus and rectum. Related codes cover anal polyp (K62.0), rectal polyp (K62.1), anal prolapse (K62.2), rectal prolapse (K62.3), stenosis of anus and rectum (K62.4), hemorrhage of anus and rectum (K62.5), radiation proctitis (K62.7), other specified diseases of anus and rectum (K62.8) and 1 more.
Don't report K62.6 together with the conditions in its Excludes1 note: fissure and fistula of anus and rectum (K60.-) and ulcerative colitis (K51.-).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific rectum ulcer codes (official index)
- stercoraceous, stercoral K62.6 — Ulcer of anus and rectum
Don't confuse with (Excludes1 for K62.6)
Common questions about rectum ulcer ICD-10 codes
What is the ICD-10 code for rectum ulcer?
- K62.6 — Ulcer of anus and rectum. More specific codes apply when the documentation supports them: K62.6.
Is K62.6 billable?
- Yes. K62.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K62.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K62.6 as a principal diagnosis.
Is K62.6 a CC or MCC?
- K62.6 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.