ICD-10 Code I82.439 – Acute embolism and thrombosis of unspecified popliteal vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.439 – Acute embolism and thrombosis of unspecified popliteal vein
What it is
This code identifies an acute blood clot or embolus in the popliteal vein behind the knee, when the record does not specify the side. It is used for a sudden deep vein thrombosis in that vessel.
Clinical signs
Findings may include unilateral leg swelling, pain, warmth, tenderness, or a heavy feeling in the affected limb. Clinical features vary; refer to documentation, and confirm the vein involved and acuity.
When to use this code
Use I82.439 when the provider documents an acute embolism or thrombosis of the popliteal vein and does not identify right or left. It also fits when imaging or assessment supports popliteal DVT without laterality. If the note names a different vein, use the more specific code.
Do not use for
Do not use this code for chronic, old, or resolved thrombosis, or when the clot is documented in another deep vein location. Check documentation if the side is stated, because laterality-specific codes may apply.
Coding tip
Look for the words acute, popliteal vein, and laterality; if any element is missing, query or check documentation before coding.