Atheroembolism of unspecified upper extremity

This code signifies the presence of an atheroembolism affecting an unspecified upper limb. An atheroembolism occurs when atherosclerotic plaque material breaks off from a larger artery and travels to a smaller vessel, obstructing blood flow. This specific code indicates the laterality of the affected upper extremity is not documented.

Use this code when documentation confirms an atheroembolic event in an upper extremity, but the medical record does not specify whether it is the right or left arm. This typically presents with acute ischemia symptoms such as pain, pallor, pulselessness, paresthesia, and paralysis in the affected limb. Supporting documentation would include imaging studies (e.g., angiography) confirming embolic occlusion and clinical notes describing the embolic source as atherosclerotic.

• Ensure the documentation explicitly states "atheroembolism" and not just "embolism" to differentiate from other embolic sources.
• Avoid using this code if the laterality (right or left upper extremity) is specified; instead, use the more specific codes I75.011 or I75.012.
• Code any associated symptoms or underlying conditions (e.g., atherosclerosis, peripheral artery disease) as additional diagnoses.