Flexion deformity, unspecified shoulder

This code describes a condition where the shoulder joint is abnormally and persistently bent or fixed in a flexed position, limiting its normal range of motion. This deformity is not specified as congenital, acquired, or due to a specific underlying cause, and the affected shoulder (left or right) is also not identified. It indicates a structural or functional impairment preventing full extension of the shoulder.

Use this code when documentation indicates a flexion deformity of the shoulder, but the specific laterality (left or right) is not documented, and the etiology is unknown or not specified. This code is appropriate for initial encounters or when the provider has not yet determined the precise cause or laterality of the deformity. Documentation should clearly state "flexion deformity of the shoulder" without further specification.

• Avoid using this code if the laterality (left or right shoulder) is documented; instead, use the more specific codes for left (M21.212) or right (M21.211) shoulder.
• Do not use this code if the deformity is explicitly described as congenital (Q68.8) or acquired due to a specific condition (e.g., post-traumatic).
• Query the provider for laterality and underlying cause if possible to allow for more specific coding.