Hypertrophy of bone, unspecified site

This code signifies an abnormal increase in the size of bone tissue without a specified anatomical location. It represents a general finding of bone overgrowth or enlargement that is not further characterized as to its cause or specific site.

Use this code when documentation indicates hypertrophy of bone but lacks specificity regarding the affected bone or region. This may occur when initial imaging reports or clinical notes identify bone overgrowth without further detail, or when the exact site is not clinically relevant for the current encounter.

• Avoid using this code if a more specific anatomical site of bone hypertrophy is documented (e.g., M89.31- for shoulder, M89.37- for ankle/foot).
• Always query the provider for greater specificity if possible, as a more precise code will improve data accuracy and potentially impact reimbursement.
• This code should generally be a last resort when no further information about the location of the bone hypertrophy is available.