ICD-10 Code I82.B – Embolism and thrombosis of subclavian vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.B – Embolism and thrombosis of subclavian vein
What it is
This code identifies a blood clot or embolus in the subclavian vein, the large vein beneath the collarbone. It indicates venous obstruction in that vessel, which may be acute or chronic depending on documentation.
Clinical signs
Typical findings include arm or shoulder swelling, pain, and venous congestion on the affected side. Clinical features vary; refer to documentation for laterality, acuity, and any associated upper-extremity deep vein thrombosis.
When to use this code
Use I82.B when the provider documents thrombosis or embolism specifically involving the subclavian vein. Apply it for confirmed cases in the inpatient or outpatient record, including catheter-associated events if the subclavian vein is named.
Check documentation for the exact vein involved and whether the condition is acute, chronic, or historical. If the record only states upper-extremity DVT without naming the subclavian vein, choose the more appropriate documented code.
Do not use for
Do not use this code for superficial thrombophlebitis, arterial embolism, or thrombosis in a different upper-extremity vein. If the subclavian vein is not specified, check documentation.
Coding tip
Capture the specific vein and laterality from the provider note, because vague “arm clot” wording may not support I82.B.