Anorectal fistula, simple, persistent

This code signifies a straightforward, ongoing abnormal tract connecting the anal canal or rectum to the perianal skin. It indicates a fistula that has not resolved and is considered uncomplicated in its presentation.

Apply this code when documentation confirms a persistent anorectal fistula without evidence of branching, multiple tracts, or involvement of complex anatomical structures. This diagnosis is typically supported by physical examination findings and/or imaging studies confirming a simple, unhealed fistula.

• Differentiate from complex fistulas (K60.52) which involve multiple tracts, high-level involvement, or significant tissue destruction.
• Ensure documentation specifies "persistent" or "chronic" to support the "persistent" aspect of the code.
• Consider sequencing with codes for underlying conditions, such as Crohn's disease, if applicable and documented as causative.