Other instability, unspecified hand

This code signifies a general instability of the hand joint(s) that is not otherwise specified or classifiable to a more specific type of instability. It indicates a loss of normal joint alignment or integrity within the hand, excluding the wrist, that is not traumatic in origin or due to a specific disease process.

Use this code when documentation indicates hand joint instability without further specification of the affected joint (e.g., carpometacarpal, metacarpophalangeal, interphalangeal) or the underlying cause. This code is appropriate when the provider notes "hand instability" but does not provide details to allow for a more precise code.

• Avoid using this code if the specific hand joint (e.g., thumb CMC joint) or the laterality (right/left) is documented; instead, choose a more specific M25.34- subcategory.
• Ensure the documentation clearly states "instability" and not just pain or swelling, as those would lead to different code assignments.
• If the instability is due to a traumatic injury, a code from the S63 category (Dislocation and sprain of joints and ligaments at wrist and hand level) would be more appropriate.