Subluxation of metacarpophalangeal joint of left thumb, subs

This code signifies a partial dislocation of the joint connecting the thumb's metacarpal bone to its first phalanx (the knuckle closest to the palm) in the left hand. The joint is still partially in contact, but misaligned, and this code is used for follow-up care after the initial injury.

Apply this code when a patient presents for ongoing treatment, rehabilitation, or follow-up appointments for a previously diagnosed subluxation of the left thumb's metacarpophalangeal joint. This includes visits for physical therapy, re-evaluation of the injury, or management of complications after the initial acute phase.

• Ensure the documentation clearly specifies "left thumb" and "metacarpophalangeal joint."
• The "D" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.
• Do not use this code for the initial injury encounter; a code with an "A" seventh character would be appropriate for the initial treatment.