MCMedicalCodingSoftware
K61.1

K61.1: Rectal abscess

Billable / specific codeICD-10-CM

K61.1 is a billable, specific ICD-10-CM code for rectal abscess. It is valid for submission on a claim.

Check K61.1 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Perirectal abscess

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

K61.1 is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56421Billing and Coding: CT of the Abdomen and Pelvis
  • A57427Billing and Coding: Transrectal Ultrasound

Alphabetic index entries that lead here

  • Abscess›pararectal
  • Abscess›perirectal
  • Abscess›rectum
  • Cellulitis›perirectal
  • Cellulitis›rectum
  • Abscess›intestine, intestinal NEC›rectal

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under K61

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.