ICD-10 Code I87.001 – Postthrombotic syndrome without complications of right lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.001 – Postthrombotic syndrome without complications of right lower extremity
What it is
This code identifies postthrombotic syndrome affecting the right lower extremity, without documented complications. It refers to chronic venous problems that develop after a prior deep vein thrombosis in that leg.
Clinical signs
Typical findings include chronic leg swelling, heaviness, aching, skin discoloration, and venous stasis changes in the right leg. Clinical features vary; refer to documentation.
When to use this code
Use I87.001 when the provider documents postthrombotic syndrome in the right lower extremity and does not describe complications. This is appropriate for follow-up visits, chronic management, or assessment of residual venous symptoms after prior thrombosis. Confirm laterality and that the condition is not being coded under a more specific complication.
Do not use for
Do not use this code if the record documents a different extremity, bilateral disease, or an active acute venous thrombosis. Also avoid it when complications are specifically reported; Check documentation.
Coding tip
Verify the right-sided laterality and the absence of complications before assigning I87.001.