ICD-10 Code K62.6 – Ulcer of anus and rectum (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K62.6 – Ulcer of anus and rectum
What it is
K62.6 identifies an ulcer involving the anus or rectum. Use it for a documented mucosal break or ulcerative lesion in this area when the provider names the condition.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings may include rectal pain, bleeding, discharge, or ulcer seen on examination, endoscopy, or imaging.
When to use this code
Use K62.6 when the clinician documents an ulcer of the anus or rectum as the diagnosis. It may also fit when an endoscopic or surgical report clearly identifies a rectal or anal ulcer.
If the note only describes nonspecific rectal pain, bleeding, or irritation without an ulcer diagnosis, check documentation before assigning this code. Code the documented condition, not a suspected cause.
Do not use for
Do not use this code for hemorrhoids, fissure, abscess, or nonspecific proctitis unless an ulcer is specifically documented. Check documentation if the lesion is described elsewhere in the lower gastrointestinal tract.
Coding tip
Confirm the anatomic site and the word “ulcer” in the provider note before coding K62.6.