Atherosclerosis of renal artery

This code signifies the hardening and narrowing of the renal arteries due to plaque buildup, restricting blood flow to the kidneys. This condition, also known as renal artery stenosis, can lead to hypertension, kidney dysfunction, and ultimately renal failure.

Apply this code when documentation explicitly states atherosclerosis affecting the renal artery. This includes diagnoses such as "atherosclerotic renal artery stenosis" or "renal artery atherosclerosis." Supporting documentation would typically include imaging reports (e.g., renal angiography, duplex ultrasound) confirming the presence of atherosclerotic changes.

• Do not confuse with other forms of renal artery stenosis (e.g., fibromuscular dysplasia) which have different codes.
• Consider co-reporting with codes for hypertension (e.g., 401.x) if documented as a consequence.
• Ensure the documentation clearly specifies "atherosclerosis" as the etiology of the renal artery involvement.