ICD-10 Code I77.76 – Dissection of artery of upper extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I77.76 – Dissection of artery of upper extremity
What it is
This code identifies a tear within the wall of an artery in the upper extremity, allowing blood to separate the vessel layers. It refers to arterial dissection in the arm or related upper-limb arteries.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include sudden limb pain, reduced pulses, ischemic symptoms, or imaging evidence of arterial wall separation.
When to use this code
Use I77.76 when the provider documents dissection of an artery supplying the upper extremity. Code it when imaging, operative notes, or specialist assessment clearly identifies the dissected vessel and the location is in the arm.
If the record only mentions vascular injury or pain without confirming dissection, check documentation before assigning this code. You should also verify whether the condition is acute, chronic, or associated with another vascular disorder.
Do not use for
Do not use this code for arterial occlusion, thrombosis, aneurysm, or nonspecific limb ischemia unless dissection is specifically documented. Check documentation if the vessel site is not clearly the upper extremity.
Coding tip
Code the exact artery and laterality only when the note supports it; otherwise, use the documented diagnosis and ask for clarification if needed.