Muscular wasting and disuse atrophy, not elsewhere classified

This code signifies a reduction in muscle mass and strength resulting from prolonged inactivity, immobilization, or neurological impairment, not attributable to a specific disease process classified elsewhere. It describes the physical manifestation of muscle tissue degeneration due to lack of use.

Apply this code when documentation indicates muscle atrophy directly linked to disuse, such as after prolonged bed rest, casting, or paralysis without a more specific underlying neurological diagnosis. Supporting documentation should clearly state "disuse atrophy" or "muscular wasting due to inactivity."

• Differentiate from atrophy due to specific neurological conditions (e.g., muscular dystrophy, poliomyelitis), which have their own codes.
• Ensure the documentation specifies "disuse" or "inactivity" as the cause; otherwise, a more specific code may be warranted.
• Consider sequencing this code after the primary condition or injury that led to the disuse, if applicable.