Subluxation of MCP joint of unsp finger, init

This code signifies a partial dislocation of the joint connecting a finger bone to a hand bone, specifically in an unspecified finger. The joint surfaces are no longer perfectly aligned but remain in contact. This diagnosis indicates the initial presentation of this injury.

Apply this code when documentation confirms a subluxation of a metacarpophalangeal joint without specifying which finger is affected. This is appropriate for the first time a patient is seen for this particular injury, whether in an emergency department, urgent care, or initial office visit.

• Ensure the documentation explicitly states "subluxation" and not a full "dislocation."
• Only use this code when the specific finger involved is not documented. If a specific finger is identified, a more precise code should be used.
• The "A" suffix indicates an initial encounter for this condition. Subsequent encounters would require different seventh characters.