ICD-10 Code I82.609 – Acute embolism and thrombosis of unspecified veins of unspecified upper extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.609 – Acute embolism and thrombosis of unspecified veins of unspecified upper extremity
What it is
This code identifies a sudden clot or embolus in a vein of the upper extremity, but the exact vein and side are not documented. Use it when the record confirms an acute venous event in the arm or shoulder region.
Clinical signs
Typical findings include arm swelling, pain, tenderness, warmth, or visible venous distention. Clinical features vary; refer to documentation, and confirm that the provider documents an acute venous thrombosis or embolism.
When to use this code
Use I82.609 when the provider documents acute embolism or thrombosis affecting an unspecified upper-extremity vein and no more specific vein or laterality is stated. It is appropriate when imaging or assessment supports the diagnosis, but the chart lacks detail for a more specific code.
Do not use for
Do not use this code for chronic venous thrombosis, superficial thrombophlebitis, or arterial embolism. If the vein, laterality, or acuity is specified, check documentation for a more precise code.
Coding tip
Query for the exact vein and side before defaulting to an unspecified code.