ICD-10 Code K61.2 – Anorectal abscess (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K61.2 – Anorectal abscess
What it is
K61.2 identifies a localized collection of pus in the anorectal region. Use it when documentation specifically states an anorectal abscess, including perianal or perirectal abscess wording if that is how the clinician describes it.
Clinical signs
Typical findings include anal or rectal pain, swelling, tenderness, and sometimes redness or drainage. Clinical features vary; refer to documentation, especially if the note describes an acute abscess with fluctuance or spontaneous drainage.
When to use this code
Use K61.2 when the provider documents an abscess involving the anorectal area and does not specify a different site or complication. It is appropriate for emergency, outpatient, or inpatient records when the diagnosis is confirmed by exam, imaging, or procedure note. Check documentation if the record mentions fistula, Crohn disease, or another anorectal condition.
Do not use for
Do not use this code for hemorrhoids, fissure, or simple anal pain without an abscess diagnosis. If the record describes a different perianal or rectal infection, or the site is unclear, check documentation.
Coding tip
Code the abscess only when the provider clearly documents the anorectal location; do not infer it from drainage or pain alone.