Dislocation of carpometacarpal joint of left thumb, sequela

This code signifies a long-term complication or late effect resulting from a previous dislocation of the joint connecting the carpal bones to the metacarpal bone of the left thumb. This could include chronic pain, stiffness, instability, or degenerative changes that persist after the initial injury has healed.

Use this code when documenting conditions that are residual effects of a past left thumb carpometacarpal joint dislocation, rather than the acute injury itself. This applies when the patient is presenting for treatment of these persistent issues, such as chronic arthritis or limited range of motion directly attributable to the old dislocation.

• Always sequence this sequela code after the code for the specific residual condition (e.g., M18.0 for primary osteoarthritis of the first carpometacarpal joint).
• Ensure documentation clearly links the current condition to a past left thumb carpometacarpal dislocation.
• Do not use this code for initial or subsequent encounters for the acute dislocation; those require codes from the S63.04- category without the "S" seventh character.