Disorders of muscle in diseases classd elswhr, unsp shoulder

This code signifies a muscular disorder affecting an unspecified shoulder that is secondary to another underlying disease process. It indicates a pathological change or dysfunction within the shoulder muscles, such as myositis, atrophy, or weakness, that is not primarily a muscle disease but rather a manifestation of another systemic or localized condition.

Use this code when documentation clearly links a shoulder muscle disorder to an underlying disease classified elsewhere, but the specific muscle involved in the shoulder is not specified. This code is appropriate when the physician explicitly states "disorder of shoulder muscle due to [underlying disease]" without further anatomical detail.

• Always sequence the underlying disease code first, as this code is a manifestation code.
• Avoid using this code if a more specific code for the muscle disorder (e.g., specific myopathy, atrophy) or the shoulder region is available and documented.
• Query the provider for clarification if the specific muscle or a more precise diagnosis for the shoulder muscle disorder can be identified.