Muscle wasting and atrophy, NEC, right thigh

This code signifies a reduction in muscle mass and strength in the right thigh that is not due to a specific neurological disease or other classified condition. It indicates a generalized loss of muscle tissue, often leading to weakness and functional impairment in the affected limb.

Use this code for documentation explicitly stating muscle wasting or atrophy of the right thigh, without an underlying neurological or systemic cause specified. This is appropriate when the physician's assessment attributes the atrophy to disuse, aging, malnutrition, or other non-specific factors. Supporting documentation should clearly identify the right thigh as the affected area and rule out more specific etiologies.

• Ensure documentation specifies "right thigh" to avoid laterality errors.
• Distinguish from atrophy due to neurological conditions (e.g., G70.00 for myasthenia gravis, G12.21 for ALS) or specific diseases, which would be coded elsewhere.
• Always look for an underlying cause; if identified, code the underlying condition first, followed by this code as a manifestation.