Dislocation of metacarpophalangeal joint of unsp thumb, subs

This code signifies a dislocation of the joint connecting the thumb's metacarpal bone to its first phalanx, occurring during the healing or recovery phase of the injury. This injury involves the displacement of the bones at the base of the thumb, affecting its stability and function.

Apply this code when a patient presents for follow-up care, such as cast changes, physical therapy, or repeat imaging, for a previously diagnosed metacarpophalangeal joint dislocation of the thumb. This includes encounters for monitoring healing, managing complications, or assessing rehabilitation progress after the initial treatment.

• Ensure documentation clearly indicates a "subsequent encounter" for the dislocation, not an initial injury.
• Verify the specific joint involved is the metacarpophalangeal joint of the thumb.
• Confirm laterality (left, right, or unspecified) if available in the medical record.