ICD-10 Code I87.01 – Postthrombotic syndrome with ulcer (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.01 – Postthrombotic syndrome with ulcer
What it is
I87.01 identifies postthrombotic syndrome complicated by an ulcer, usually after prior deep vein thrombosis. It reflects chronic venous damage with impaired return flow and skin breakdown.
Clinical signs
Typical findings include chronic leg swelling, pain, skin discoloration, and a venous ulcer, often near the ankle. Clinical features vary; refer to documentation.
When to use this code
Use I87.01 when the record clearly documents postthrombotic syndrome and an associated ulcer. It is appropriate for chronic venous complications after thrombosis, not for a simple history of DVT alone. Confirm the ulcer site and cause in the note.
Do not use for
Do not use this code for venous insufficiency without postthrombotic syndrome, or for ulcers with another documented cause. If the record does not support both conditions, check documentation.
Coding tip
Code the ulcer and the postthrombotic syndrome only when the provider links them in the documentation.