Unsp athscl native arteries of extremities, unsp extremity

This code signifies the presence of hardening and narrowing of the native arteries in an extremity due to plaque buildup, without further specification of the exact artery or the specific extremity affected. It indicates a generalized atherosclerotic process impacting the peripheral arterial system.

Use this code when documentation confirms atherosclerosis of a native artery in an extremity, but the specific artery (e.g., femoral, popliteal) or the laterality (left, right) is not documented. This is appropriate for initial assessments or when detailed imaging or surgical reports are unavailable.

• Avoid using this code if the specific extremity (left/right) or the specific artery is documented; instead, use a more specific code from the I70.2 series.
• This code should be a last resort when more precise anatomical or laterality information is absent.
• Query the provider for clarification on the affected extremity and specific artery whenever possible to allow for more granular coding.