ICD-10 Code I82.C29 – Chronic embolism and thrombosis of unspecified internal jugular vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.C29 – Chronic embolism and thrombosis of unspecified internal jugular vein
What it is
This code identifies a long-standing clot or embolus in an internal jugular vein when the affected side is not documented. Use it for chronic venous obstruction involving that neck vein, not for acute events.
Clinical signs
Clinical features vary; refer to documentation. Notes may mention neck swelling, tenderness, venous distention, or prior imaging showing persistent thrombus in the internal jugular vein.
When to use this code
Use this code when the record clearly states chronic embolism or chronic thrombosis of an internal jugular vein and does not specify right or left. It also fits follow-up encounters for a previously diagnosed chronic clot if the provider still documents it as active. If laterality is documented, choose the more specific code.
Do not use for
Do not use this code for acute jugular vein thrombosis or for thrombosis in another vein. Check documentation if the note only says “history of clot” without an active chronic diagnosis.
Coding tip
Confirm chronicity and laterality in the assessment, imaging report, or problem list before assigning I82.C29.