ICD-10 Code I82.43 – Acute embolism and thrombosis of popliteal vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.43 – Acute embolism and thrombosis of popliteal vein
What it is
I82.43 identifies an acute blood clot or embolus in the popliteal vein behind the knee. Use it when the provider documents a new, active thrombosis in that specific vein.
Clinical signs
Typical findings include unilateral leg swelling, pain, tenderness, warmth, or a sense of heaviness. Clinical features vary; refer to documentation, and confirm the clot is in the popliteal vein.
When to use this code
Use this code when the record clearly states acute embolism or thrombosis of the popliteal vein, often supported by imaging or a documented clinical diagnosis. It applies when the event is current and not described as chronic or historical. If laterality or acuity is unclear, check documentation.
Do not use for
Do not use it for superficial thrombophlebitis, chronic venous thrombosis, or clots in another venous site. If the provider only documents suspected DVT without confirmation, check documentation.
Coding tip
Code the exact vein named in the note; do not default to a generic DVT code when popliteal vein thrombosis is specified.