Phlebitis and thrombophlebitis of unspecified peroneal vein

This code signifies inflammation of the wall of an unspecified peroneal vein, accompanied by the formation of a blood clot within that vein. It describes a thrombotic event affecting one of the deep veins in the lower leg, where the specific peroneal vein involved is not documented.

Use this code when documentation explicitly states "phlebitis and thrombophlebitis of the peroneal vein" without specifying laterality (left or right) or a more precise anatomical location within the peroneal system. This code is appropriate when the physician's notes indicate a deep vein thrombosis (DVT) affecting a peroneal vein, but further detail is absent.

• Avoid using this code if laterality (left or right peroneal vein) is specified in the medical record; choose a more specific code.
• Ensure the documentation clearly indicates both phlebitis and thrombophlebitis; if only one is present, a different code may be more appropriate.
• Consider any underlying causes or associated conditions (e.g., pulmonary embolism) and code them accordingly as secondary diagnoses.