Subluxation of carpometacarpal joint of left thumb, sequela

This code signifies a long-term or late-effect condition resulting from a previous subluxation of the carpometacarpal (CMC) joint of the left thumb. It indicates that the joint's partial dislocation has led to ongoing issues, such as chronic pain, instability, or functional impairment, even after the acute injury has resolved.

Apply this code when documenting a patient presenting with persistent symptoms directly attributable to a past subluxation of the left thumb's CMC joint. This is appropriate for follow-up visits addressing chronic pain, reduced range of motion, or other sequelae years or months after the initial injury.

• Always use this code as a secondary diagnosis, following a code for the specific sequela (e.g., chronic pain, osteoarthritis).
• Ensure documentation clearly links the current condition to a prior left thumb CMC joint subluxation.
• Do not use for acute or initial encounters of a subluxation; this code is exclusively for sequelae.