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2025 ICD-10-CM code I70.21

Atherosclerosis of native arteries of the extremities with intermittent claudication.

Do not code for atherosclerosis of bypass grafts (I70.30-I70.79) with this code.Use an additional code to identify chronic total occlusion, if applicable.

Medical necessity is established by the presence of signs and symptoms of intermittent claudication due to atherosclerosis in the native arteries of the extremities.Diagnostic testing, such as duplex ultrasound or angiography, may be necessary to confirm the diagnosis and guide treatment decisions.

Diagnosis and management of atherosclerosis of the extremities, including assessment of peripheral vascular disease, and addressing associated symptoms like intermittent claudication. This may involve ordering imaging studies, prescribing medications to improve blood flow, and recommending lifestyle modifications.

IMPORTANT:Use additional code to identify chronic total occlusion of artery of extremity (I70.92), if applicable.

In simple words: This condition involves the build-up of plaque in the leg arteries, causing pain and cramping during exercise that goes away with rest.

This code specifies atherosclerosis affecting the native arteries of the extremities, resulting in intermittent claudication.Intermittent claudication is characterized by pain, cramping, or aching in the legs or buttocks during physical activity, such as walking, which is relieved by rest.

Example 1: A 65-year-old male presents with pain in his calves while walking that subsides with rest, consistent with intermittent claudication.Diagnostic testing confirms atherosclerosis in the arteries of his lower legs., A patient with a history of diabetes and smoking experiences cramping in their thigh muscles after walking for a short distance.Examination reveals diminished pulses in the lower extremities, and imaging confirms a diagnosis of atherosclerosis with intermittent claudication., A 70-year-old female with high cholesterol and hypertension reports pain and weakness in her legs while walking uphill. Duplex ultrasound confirms a diagnosis of atherosclerosis in the lower extremity arteries with intermittent claudication.

Documentation should clearly indicate the presence of intermittent claudication, the affected extremity/extremities, and any diagnostic studies confirming the presence of atherosclerosis in native arteries.

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