ICD-10 Code I82.4Y1 – Acute embolism and thrombosis of unspecified deep veins of right proximal lower extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.4Y1 – Acute embolism and thrombosis of unspecified deep veins of right proximal lower extremity
What it is
This code identifies an acute blood clot or embolus in the deep veins of the right upper leg, but the exact vein is not specified. Use it when documentation confirms a right proximal lower-extremity DVT.
Clinical signs
Typical findings include unilateral leg swelling, pain, warmth, tenderness, or redness. Clinical features vary; refer to documentation, imaging, or provider assessment confirming an acute deep venous clot on the right side.
When to use this code
Use this code when the record states an acute thrombosis or embolism in an unspecified deep vein of the right proximal lower extremity. It is appropriate when the site is clearly proximal, but the specific deep vein is not named. Check documentation if laterality or acuity is unclear.
Do not use for
Do not use it for chronic or old DVT, superficial vein thrombosis, or clots in the left leg or an unspecified limb. If the documentation names a more specific vein, code that instead.
Coding tip
Verify three details in the note: acute, right-sided, and proximal lower-extremity deep vein involvement.