ICD-10 Code I82.291 – Chronic embolism and thrombosis of other thoracic veins (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.291 – Chronic embolism and thrombosis of other thoracic veins
What it is
This code identifies a long-standing blood clot or embolic blockage in thoracic veins other than the major named vessels. Use it when the record clearly documents chronic venous thrombosis or embolism in the chest veins.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record may note persistent venous obstruction, collateral vein formation, swelling, or discomfort related to impaired chest venous drainage.
When to use this code
Use I82.291 when the provider documents chronic embolism or thrombosis involving an unspecified other thoracic vein. It is appropriate when the condition is established as chronic, not acute or subacute. If the note names a different vein site, code that more specific diagnosis instead.
Do not use for
Do not use this code for acute thoracic vein thrombosis, pulmonary embolism, or thrombosis in a specifically named thoracic vessel. Check documentation if the vein location or chronicity is unclear.
Coding tip
Verify both chronicity and vein location in the provider note before assigning I82.291.