K61.39
Other ischiorectal abscess
K61.39 (also written K6139) is a billable ICD-10-CM diagnosis code for other ischiorectal abscess. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 7 codes in category K61 (Abscess of anal and rectal regions). The Alphabetic Index lists it under 2 entries. Its coding notes include 8 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Gastrointestinal tract and Genitourinary system clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Includes
Further defines or gives examples of the content of the category.
- abscess of anal and rectal regions
- cellulitis of anal and rectal regions
Inclusion terms
Conditions classified to this code.
- Abscess of ischiorectal fossa
- Ischiorectal abscess, NOS
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries