Phlebitis and thrombophlebitis of unspecified tibial vein

This code signifies inflammation of an unspecified tibial vein, accompanied by the formation of a thrombus (blood clot). It indicates a thrombotic event within one of the deep veins of the lower leg, without further specification of which particular tibial vein (anterior, posterior, or peroneal).

Apply this code when documentation confirms phlebitis and thrombophlebitis of a tibial vein, but the specific tibial vein involved is not identified. This is appropriate for diagnoses such as "DVT of unspecified tibial vein" or "thrombophlebitis of lower leg, tibial vein not specified."

• Ensure documentation explicitly states "unspecified" or lacks specificity regarding the anterior, posterior, or peroneal tibial vein.
• Avoid using this code if the specific tibial vein (e.g., anterior tibial vein) is documented; instead, use a more specific code from the I80.2- series.
• Consider sequencing this code after any underlying cause or associated conditions, such as malignancy or inherited thrombophilia, if applicable.