Hypertrophy of bone, unspecified hand

This code signifies an abnormal enlargement or overgrowth of bone tissue in an unspecified hand. This hypertrophy is non-inflammatory and can affect any bone within the hand structure, leading to potential functional impairment or cosmetic changes.

Apply this code when documentation clearly states "hypertrophy of bone" in the hand, without further specification of the exact bone (e.g., metacarpal, phalanx) or the underlying cause. It is appropriate when the laterality (left or right hand) is also not specified in the clinical record.

• Ensure the documentation explicitly states "hypertrophy of bone" and not other bone conditions like osteophytes or exostoses, which have different codes.
• Avoid using this code if the specific bone affected (e.g., carpal, metacarpal, phalanx) or the laterality is documented; instead, use a more specific code from the M89.34- subcategory.
• Query the provider for more specific anatomical location and laterality if available to allow for more precise coding.