Subluxation of carpometacarpal joint of unsp thumb, subs

This code signifies a partial dislocation of the joint connecting the thumb's metacarpal bone to the wrist bones, specifically when the patient is receiving follow-up care for this injury. It indicates that the joint has moved out of its normal alignment but remains partially in contact.

Apply this code for patients presenting for subsequent treatment of a previously diagnosed carpometacarpal joint subluxation of an unspecified thumb. This includes follow-up appointments for casting, splinting, physical therapy, or medication management after the initial injury has been addressed.

• Ensure the encounter is for follow-up care, not the initial injury or sequela.
• Confirm documentation specifies "subluxation" rather than a complete "dislocation."
• Use this code when the laterality of the thumb (right or left) is not documented.