ICD-10-CM > K00-K95 > K55-K64 > K60 K60 Fissure and fistula of anal and rectal regions Non-Billable/Non-Specific Type 2 Excludes abscess or cellulitis of anal and rectal regions (K61.-)anal sphincter tear (healed) (nontraumatic) (old) (K62.81) Codes K60.0Acute anal fissureK60.1Chronic anal fissureK60.2Anal fissure, unspecifiedK60.3Anal fistulaK60.30Anal fistula, unspecifiedK60.31Anal fistula, simpleK60.311Anal fistula, simple, initialK60.312Anal fistula, simple, persistentK60.313Anal fistula, simple, recurrentK60.319Anal fistula, simple, unspecifiedK60.32Anal fistula, complexK60.321Anal fistula, complex, initialK60.322Anal fistula, complex, persistentK60.323Anal fistula, complex, recurrentK60.329Anal fistula, complex, unspecifiedK60.4Rectal fistulaK60.40Rectal fistula, unspecifiedK60.41Rectal fistula, simpleK60.411Rectal fistula, simple, initialK60.412Rectal fistula, simple, persistentK60.413Rectal fistula, simple, recurrentK60.419Rectal fistula, simple, unspecifiedK60.42Rectal fistula, complexK60.421Rectal fistula, complex, initialK60.422Rectal fistula, complex, persistentK60.423Rectal fistula, complex, recurrentK60.429Rectal fistula, complex, unspecifiedK60.5Anorectal fistulaK60.50Anorectal fistula, unspecifiedK60.51Anorectal fistula, simpleK60.511Anorectal fistula, simple, initialK60.512Anorectal fistula, simple, persistentK60.513Anorectal fistula, simple, recurrentK60.519Anorectal fistula, simple, unspecifiedK60.52Anorectal fistula, complexK60.521Anorectal fistula, complex, initialK60.522Anorectal fistula, complex, persistentK60.523Anorectal fistula, complex, recurrentK60.529Anorectal fistula, complex, unspecified