ICD-10 Code I82.C1 – Acute embolism and thrombosis of internal jugular vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.C1 – Acute embolism and thrombosis of internal jugular vein
What it is
This code identifies a sudden blood clot or embolus in the internal jugular vein. It is used when documentation specifies an acute event affecting that neck vein.
Clinical signs
Clinical features vary; refer to documentation. You may see neck pain, swelling, tenderness, or venous distention, but diagnosis usually depends on imaging and provider confirmation.
When to use this code
Use this code when the record states acute embolism or thrombosis of the internal jugular vein. It fits confirmed jugular vein clotting, including cases found on ultrasound, CT, or other imaging. Do not assume laterality or chronicity unless documented.
Do not use for
Do not use this code for chronic jugular vein thrombosis or for thrombosis in other veins. Check documentation if the clot is in the subclavian, brachiocephalic, or another location.
Coding tip
Verify the vessel and acuity in the note before assigning I82.C1.