Dislocation of carpometacarpal joint of right thumb, init

This diagnosis code signifies a traumatic displacement of the joint connecting the trapezium bone of the wrist to the first metacarpal bone of the right thumb. This injury disrupts the normal articulation of the thumb's base, often resulting in pain, swelling, and impaired function.

Apply this code for initial encounters with patients presenting with a newly diagnosed or treated dislocation of the right thumb's carpometacarpal (CMC) joint. This includes emergency department visits, initial orthopedic consultations, or the first visit for definitive treatment of the injury.

• Ensure documentation specifies "right thumb" and "carpometacarpal joint" to support this specific code.
• Confirm the encounter is "initial" for this injury; subsequent encounters will require a different seventh character.
• Look for keywords like "dislocation," "subluxation," or "displacement" of the CMC joint in the physician's notes.