Postthrombotic syndrome w ulcer of bilateral lower extremity

This code describes a chronic condition that develops after a deep vein thrombosis (DVT), characterized by persistent venous hypertension and damage to the vein valves in both lower extremities. The most severe manifestation, a venous ulcer, is present on both legs. This indicates significant and long-standing venous insufficiency.

Use this code when documentation clearly indicates a history of DVT in both lower extremities, followed by the development of postthrombotic syndrome, and the current presence of venous ulcers on both legs. The physician's notes should explicitly state "postthrombotic syndrome" and "ulcer" affecting "bilateral lower extremities."

• Ensure the documentation specifies bilateral involvement of the lower extremities for both the syndrome and the ulcer.
• Do not use this code if the ulcer is due to arterial insufficiency or other non-venous causes.
• Always code the specific type of ulcer (e.g., non-pressure chronic ulcer) as an additional diagnosis, if further specificity is documented.