ICD-10 Code I77.73 – Dissection of renal artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I77.73 – Dissection of renal artery
What it is
I77.73 identifies a tear in the inner wall of the renal artery, allowing blood to track between vessel layers. This can narrow blood flow to the kidney and may occur spontaneously or after trauma or procedures.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include flank or abdominal pain, hypertension, reduced renal perfusion, or evidence of renal infarction on imaging.
When to use this code
Use this code when the record clearly documents dissection of a renal artery, whether acute or chronic, and the diagnosis is confirmed or treated as the active condition. Apply it for unilateral or bilateral renal artery dissection when that is the stated diagnosis.
Choose this code when imaging, operative notes, or specialist documentation specifically identifies renal artery dissection. Check documentation if the record only mentions renal artery stenosis, aneurysm, or general vascular injury.
Do not use for
Do not use I77.73 for renal artery stenosis, occlusion, aneurysm, or renal infarction without documented dissection. Do not assign it when the note is nonspecific or the vessel involved is not the renal artery.
Coding tip
Code the dissection only when the provider clearly names the renal artery and the dissection; otherwise, query or check documentation.