Fistula, left foot

This code describes an abnormal, tunnel-like connection (fistula) originating in the left foot. This tract typically connects an infected area or abscess to the skin surface, allowing discharge, or it can connect two organs or vessels that are not normally connected.

Use this code when documentation explicitly states the presence of a fistula located in the left foot. This often arises from chronic infection, osteomyelitis, or complications from surgery or trauma. Supporting documentation should include physician notes detailing the location and presence of the fistula.

• Ensure the documentation specifies "left foot" to avoid laterality errors.
• Do not confuse with sinus tracts, which are blind-ended and do not connect two epithelialized surfaces.
• Code any underlying cause of the fistula (e.g., osteomyelitis, abscess) as a primary diagnosis if applicable, with the fistula as a secondary diagnosis.