ICD-10 Code I82.5 – Chronic embolism and thrombosis of deep veins of lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.5 – Chronic embolism and thrombosis of deep veins of lower extremity
What it is
This code identifies a long-standing clot or embolic blockage in the deep veins of the lower leg or thigh. It applies when the condition is chronic, not an acute new event.
Clinical signs
Common findings include persistent leg swelling, pain, heaviness, or skin changes after prior venous thrombosis. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states chronic deep vein thrombosis or chronic embolism in a lower-extremity deep vein. You may also use it when the provider documents residual or persistent thrombotic disease in that venous system. Check documentation for laterality and any more specific subcode if available.
Do not use for
Do not use it for acute DVT, superficial thrombophlebitis, or a history of DVT without current chronic disease. If the note only says “rule out” or is unclear, check documentation.
Coding tip
Verify that the provider documents chronicity and lower-extremity deep vein involvement before assigning I82.5.