ICD-10 Code I77.1 – Stricture of artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I77.1 – Stricture of artery
What it is
I77.1 identifies a narrowing, or stricture, of an artery. It means blood flow through the affected vessel is reduced because the arterial lumen is constricted.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced distal pulses, diminished blood flow, or ischemic symptoms in the supplied area, depending on the artery involved.
When to use this code
Use I77.1 when the record clearly states arterial stricture or stenosis without a more specific diagnosis. It may apply to imaging, vascular, or operative documentation that describes narrowing of an artery. Code the documented vessel and underlying cause if the provider identifies one.
Do not use for
Do not use this code for venous narrowing, congenital vessel anomalies, or atherosclerosis coded elsewhere. Check documentation if the record describes occlusion, embolism, or a different vascular disorder.
Coding tip
Confirm the provider documents an arterial stricture or stenosis; if a more specific vascular diagnosis is stated, code that instead.