ICD-10 Code I74.9 – Embolism and thrombosis of unspecified artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I74.9 – Embolism and thrombosis of unspecified artery
What it is
I74.9 identifies an arterial embolism or thrombosis when the affected artery is not specified in the record. Use it when documentation confirms an arterial blockage but does not name the vessel.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include sudden pain, pallor, coolness, diminished pulses, or signs of ischemia in the affected limb or organ.
When to use this code
Use this code when the provider documents embolism or thrombosis of an artery but does not identify a specific artery. It also fits when the site is described broadly and no more precise code is supported. If laterality or vessel location is documented, code to the most specific option available.
Do not use for
Do not use I74.9 for venous thrombosis, arterial spasm, or atherosclerotic disease without embolism or thrombosis. Check documentation if the record names a specific artery or another vascular disorder.
Coding tip
Query for the exact artery whenever possible; unspecified codes should be used only when the documentation truly lacks detail.