ICD-10 Code I82.B11 – Acute embolism and thrombosis of right subclavian vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.B11 – Acute embolism and thrombosis of right subclavian vein
What it is
This code identifies an acute blood clot or embolus in the right subclavian vein, a major vein beneath the collarbone. Use it when documentation specifies the right side and the event is acute.
Clinical signs
Typical findings include arm or shoulder swelling, pain, heaviness, and visible superficial veins on the affected side. Clinical features vary; refer to documentation for imaging confirmation or provider-documented thrombosis.
When to use this code
Use I82.B11 when the record clearly states acute embolism, thrombosis, or both in the right subclavian vein. It is appropriate for confirmed venous thrombosis documented by the provider, including catheter-associated events if the right subclavian vein is named.
Choose this code only when the laterality and acuity are documented. If the note says upper-extremity deep vein thrombosis without site detail, check documentation before coding.
Do not use for
Do not use this code for chronic or old thrombosis, or when the clot is in the left or unspecified subclavian vein. Do not assign it for nonspecific arm swelling without documented venous thrombosis.
Coding tip
Verify three elements in the note: acute status, right side, and subclavian vein location.