Dislocation of carpometacarpal joint of left thumb, subs

This code signifies a follow-up encounter for a patient who has previously sustained a dislocation of the joint connecting the carpal bones to the first metacarpal bone in their left thumb. This injury involves the displacement of the articulating surfaces of this specific joint.

Apply this code for subsequent visits related to the initial left thumb carpometacarpal joint dislocation, such as for cast changes, wound checks, physical therapy, or follow-up imaging. It is appropriate after the initial treatment of the acute injury has been rendered.

• Ensure the encounter is for follow-up care, not the initial treatment of the dislocation.
• Verify the laterality (left thumb) and the specific joint (carpometacarpal) are accurately documented.
• Do not use for initial encounters or for dislocations of other thumb joints.