Subluxation of MCP joint of right thumb, subs

This code signifies a partial dislocation of the joint connecting the right thumb's metacarpal bone to its first phalanx. The joint surfaces are no longer perfectly aligned, but still maintain some contact. This diagnosis indicates the patient is receiving follow-up care for an injury that occurred previously.

Apply this code when documenting ongoing treatment, such as cast changes, physical therapy, or medication management, for a subluxation of the right thumb's MCP joint. It is appropriate for encounters after the initial injury and active treatment phase. This code should be used for subsequent visits related to the healing and recovery process.

• Ensure documentation clearly states "right thumb" and "metacarpophalangeal joint."
• Verify the encounter is for follow-up care, not the initial injury.
• Distinguish from a complete dislocation (luxation), which would use a different code.