K61
ICD-10Non-billable categoryAbscess of anal and rectal regions
Official ICD-10-CM descriptor (FY2026)
Abscess of anal and rectal regions
K61 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- abscess of anal and rectal regions
- cellulitis of anal and rectal regions
More specific codes under K61
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.