Muscle wasting and atrophy, NEC, unsp thigh

This code signifies a reduction in muscle mass and size in an unspecified thigh, not due to a specific underlying disease or condition classified elsewhere. It indicates a general atrophy or wasting of the thigh musculature without a more precise etiology or laterality being documented.

Use this code when documentation clearly states muscle wasting or atrophy of the thigh, but does not specify whether it's the right or left thigh, nor does it link the atrophy to a specific neurological, systemic, or localized disease process. This code is appropriate when the provider's assessment points to a generalized or idiopathic thigh muscle loss.

• Avoid using this code if the documentation specifies laterality (right or left thigh); instead, use the more specific codes for right (M62.551) or left (M62.552) thigh.
• Always query the provider for a more specific diagnosis and laterality if possible, as "unspecified" codes should be avoided when more detailed information is available.
• Do not use this code if the muscle wasting is secondary to a known condition (e.g., poliomyelitis, disuse atrophy from paralysis); in such cases, code the underlying condition first, followed by the appropriate muscle atrophy code if specified.