ICD-10 Code I87.02 – Postthrombotic syndrome with inflammation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.02 – Postthrombotic syndrome with inflammation
What it is
I87.02 identifies postthrombotic syndrome with inflammatory changes after a prior venous thrombosis. It is used when chronic venous damage leads to ongoing swelling, pain, or skin irritation.
Clinical signs
Typical findings include chronic leg swelling, heaviness, aching, skin discoloration, and tenderness. Clinical features vary; refer to documentation for evidence of inflammation such as redness, warmth, or inflammatory skin changes.
When to use this code
Use this code when the record clearly links the patient’s current venous symptoms to a past thrombosis and documents inflammatory involvement. It may support coding of chronic postthrombotic complications rather than an acute clot. Check documentation if the note only describes nonspecific edema or venous insufficiency.
Do not use for
Do not use it for acute deep vein thrombosis, superficial thrombophlebitis, or uncomplicated chronic venous insufficiency. If inflammation is not documented, verify whether a different postthrombotic or venous disorder code fits.
Coding tip
Confirm that the provider documents both the postthrombotic condition and inflammation before assigning I87.02.