ICD-10 Code I82.90 – Acute embolism and thrombosis of unspecified vein (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I82.90 – Acute embolism and thrombosis of unspecified vein
What it is
This code identifies an acute clot or embolus in a vein when the specific vein is not documented. Use it when the record confirms venous thrombosis or embolism but does not name the site.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include localized swelling, pain, tenderness, or venous congestion, but the diagnosis should be supported by imaging or other clinical assessment.
When to use this code
Use I82.90 when the provider documents an acute venous embolism or thrombosis and the affected vein is unspecified. It fits discharge summaries, problem lists, or imaging reports that confirm the event without further detail.
If later documentation identifies a specific vein, code the more precise option instead. Check documentation for laterality, anatomic site, and whether the event is acute versus chronic.
Do not use for
Do not use this code for chronic venous thrombosis, superficial vein thrombosis, or arterial embolism. If the record names a specific vein or vessel, select the more specific ICD-10 code.
Coding tip
Query for the exact vein and acuity when the note says only “DVT” or “thrombosis,” because specificity changes code selection.