Other specified disorders of bone, multiple sites

This code signifies various uncommon or ill-defined bone disorders affecting multiple anatomical locations. It is used when a specific bone disorder is identified but does not have a more precise ICD-10-CM code, and the condition manifests in more than one bone or bone region. This excludes localized bone conditions or those with specific codes for systemic involvement.

Apply this code when documentation indicates a diagnosed bone disorder that is not otherwise classified and affects multiple sites throughout the skeletal system. Examples include rare metabolic bone diseases with diffuse involvement or unclassified dysplasias impacting several bones. Documentation should clearly state the "other specified" nature of the disorder and its multi-site presentation.

• Ensure the documentation explicitly states "multiple sites" or lists several affected bone locations.
• Always review for more specific codes first; this is a residual category.
• Do not use for localized bone disorders or when a more precise code for a systemic bone disease is available.