Subluxation of carpometacarpal joint of left thumb, subs

This code signifies a partial dislocation of the joint connecting the thumb's metacarpal bone to the wrist bones on the left hand. It indicates that the patient is receiving follow-up care for this specific injury, rather than initial treatment.

Apply this code when documenting a patient's visit for ongoing management, such as physical therapy, re-evaluation, or cast changes, related to a previously diagnosed subluxation of the left thumb carpometacarpal joint. This is appropriate for any encounter after the initial treatment phase.

• Ensure the documentation clearly specifies "left thumb" and "carpometacarpal joint."
• Verify that the encounter is for subsequent care, not the initial injury or a sequela.
• Do not use this code for a complete dislocation (luxation) or for injuries to other thumb joints.