ICD-10 Code I87.022 – Postthrombotic syndrome with inflammation of left lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I87.022 – Postthrombotic syndrome with inflammation of left lower extremity
What it is
I87.022 identifies postthrombotic syndrome affecting the left lower extremity with inflammation. It describes chronic venous problems that follow a prior deep vein thrombosis and are documented as involving the left leg.
Clinical signs
Typical findings include chronic leg swelling, pain, heaviness, skin discoloration, and venous stasis changes in the affected limb. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states postthrombotic syndrome with inflammation in the left lower extremity. It is appropriate when the provider links the condition to prior thrombosis and documents the left-sided location. Check documentation if laterality or inflammation is not specified.
Do not use for
Do not use it for uncomplicated history of DVT without postthrombotic syndrome, or for venous disease not documented as inflammatory. Do not assign it if the left lower extremity is not identified.
Coding tip
Confirm both the postthrombotic syndrome and the left-sided inflammatory involvement in the note before assigning I87.022.