ICD-10 Code I82.C21 – Chronic embolism and thrombosis of right internal jugular vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.C21 – Chronic embolism and thrombosis of right internal jugular vein
What it is
This code identifies a chronic blood clot or embolic blockage in the right internal jugular vein. Use it when the condition is documented as ongoing, old, or chronic rather than acute.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include neck swelling, pain, venous distention, or a history of prior venous thrombosis confirmed by imaging.
When to use this code
Use this code when the record specifically states chronic embolism or thrombosis of the right internal jugular vein. It also fits follow-up encounters where the clot remains present and is not described as acute or resolved.
Code it from provider documentation or imaging reports that identify the right internal jugular vein and chronicity. If the laterality or chronic status is unclear, check documentation before assigning the code.
Do not use for
Do not use this code for acute jugular vein thrombosis, suspected clot without confirmation, or thrombosis in a different vein. Check documentation if the record only says “history of thrombosis.”
Coding tip
Verify both chronicity and right-sided location in the note or imaging report before coding.