ICD-10-CM 2027
ICD-10 code for Anorectal infectional fistula
From the official ICD-10-CM alphabetic index entry “Fistula (cutaneous) › anorectal (infectional)”. Page updated September 29, 2026.
About coding Anorectal infectional fistula
The ICD-10-CM code for Anorectal infectional fistula is K60.50 (Anorectal fistula, unspecified). The official index lists 20 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on K60.50.
Within K60.5, choose K60.50 (unspecified) only when documentation doesn't support a more specific option: simple (K60.51) and complex (K60.52).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 393 (Other Digestive System Diagnoses with MCC, relative weight 1.5881), DRG 394 (Other Digestive System Diagnoses with CC, relative weight 0.9228) and DRG 395 (Other Digestive System Diagnoses without CC/MCC, relative weight 0.6382), in MDC 06 (Diseases and Disorders of the Digestive System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Anorectal infectional fistula codes (official index)
- complex K60.529 — Anorectal fistula, complex, unspecified
- chronic K60.522 — Anorectal fistula, complex, persistent
- initial K60.521 — Anorectal fistula, complex, initial
- new K60.521 — Anorectal fistula, complex, initial
- occurring following complete healing K60.523 — Anorectal fistula, complex, recurrent
- persistent K60.522 — Anorectal fistula, complex, persistent
- recurrent K60.523 — Anorectal fistula, complex, recurrent
- extrasphincteric K60.52 — Anorectal fistula, complex
- high intersphincteric K60.52 — Anorectal fistula, complex
- low intersphincteric K60.51 — Anorectal fistula, simple
- simple K60.519 — Anorectal fistula, simple, unspecified
- chronic K60.512 — Anorectal fistula, simple, persistent
- initial K60.511 — Anorectal fistula, simple, initial
- new K60.511 — Anorectal fistula, simple, initial
- occurring following complete healing K60.513 — Anorectal fistula, simple, recurrent
- persistent K60.512 — Anorectal fistula, simple, persistent
- recurrent K60.513 — Anorectal fistula, simple, recurrent
- superficial K60.51 — Anorectal fistula, simple
- suprasphincteric K60.52 — Anorectal fistula, complex
- transsphincteric K60.52 — Anorectal fistula, complex
Common questions about Anorectal infectional fistula ICD-10 codes
What is the ICD-10 code for Anorectal infectional fistula?
- K60.50 — Anorectal fistula, unspecified. More specific codes apply when the documentation supports them: K60.529, K60.522, K60.521, K60.521 and others below.
What is the ICD-10 code for complex anorectal infectional fistula?
- K60.529 — Anorectal fistula, complex, unspecified.
What is the ICD-10 code for extrasphincteric anorectal infectional fistula?
- K60.52 — Anorectal fistula, complex (header code; choose a more specific subcode).
What is the ICD-10 code for high intersphincteric anorectal infectional fistula?
- K60.52 — Anorectal fistula, complex (header code; choose a more specific subcode).
What is the ICD-10 code for low intersphincteric anorectal infectional fistula?
- K60.51 — Anorectal fistula, simple (header code; choose a more specific subcode).
What is the ICD-10 code for simple anorectal infectional fistula?
- K60.519 — Anorectal fistula, simple, unspecified.
What is the ICD-10 code for superficial anorectal infectional fistula?
- K60.51 — Anorectal fistula, simple (header code; choose a more specific subcode).
Is K60.50 billable?
- Yes. K60.50 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can K60.50 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict K60.50 as a principal diagnosis.
Is K60.50 a CC or MCC?
- No. K60.50 is neither a CC nor an MCC under MS-DRG v44.0.