Unequal limb length (acquired), unspecified humerus

This code signifies an acquired disparity in the length of the humerus, where one humerus is noticeably longer or shorter than the other, without specifying which side. This condition is not congenital but developed after birth due to various factors affecting bone growth or integrity.

Use this code when documentation indicates an acquired, unspecified humerus length discrepancy. This typically occurs following trauma, infection, tumor, or surgical intervention affecting the humerus, leading to growth disturbance or bone loss. Supporting documentation should clearly state "unequal limb length (acquired)" and specify the humerus, but not the laterality.

• Only use this code when the laterality (right or left humerus) is not documented.
• Distinguish from congenital limb length discrepancies, which are coded differently.
• Consider sequencing this code after the underlying cause of the acquired unequal length, if known and actively treated.