ICD-10 Code K62.9 – Disease of anus and rectum, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K62.9 – Disease of anus and rectum, unspecified
What it is
K62.9 is a nonspecific ICD-10-CM code for an unspecified disorder of the anus or rectum. Use it when the record confirms a rectal or anal condition, but the provider does not name a more precise diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Findings may include anorectal pain, bleeding, swelling, discharge, constipation, or a palpable lesion, but these signs alone do not define a specific diagnosis.
When to use this code
Use K62.9 when the assessment states a disease of the anus or rectum and no further detail is available. It also fits cases where the note is incomplete, unclear, or the provider has not identified a more specific anorectal disorder.
Do not use it just because the patient has nonspecific symptoms. You need documentation that supports an actual anal or rectal disease, not only a complaint such as pain or bleeding.
Do not use for
Do not use K62.9 when the chart identifies a specific condition such as fissure, hemorrhoids, abscess, or prolapse. Check documentation if the finding is only a symptom or if the diagnosis is elsewhere in the record.
Coding tip
Query for specificity whenever the provider’s note says only “rectal disorder” or “anal disease.”