Fistula, other specified site

This code signifies the presence of an abnormal, pathological connection between two epithelialized surfaces or organs that is not located in a joint. This connection allows the passage of fluids, pus, or other substances between the connected structures. It represents a fistula in a specific anatomical location not otherwise classified as a joint fistula.

Use this code when documentation clearly identifies a fistula in a specified anatomical site other than a joint. Examples include enterocutaneous, colovesical, or bronchopleural fistulas where a more specific code is unavailable. The medical record must specify the exact location of the fistula.

• Do not use this code for fistulas involving a joint; refer to codes within the M24.6 category for those.
• Always seek a more specific code if available for the documented fistula type and location.
• Ensure the documentation clearly identifies the "other specified site" to support the use of this code.