Nondisp fx of prox phalanx of thmb, subs for fx w malunion

This code describes a situation where a patient is receiving ongoing care for a previously sustained, non-displaced fracture of the bone closest to the hand in an unidentifiable thumb. The fracture, despite initial treatment, has healed in an imperfect or misaligned position.

This code is appropriate for follow-up encounters where a physician is assessing or managing a malunion of a non-displaced proximal phalanx fracture of an unspecified thumb. This includes scenarios such as evaluating the functional impact of the malunion, discussing surgical correction options, or monitoring the patient's progress after a malunion has been identified.

• Ensure documentation clearly specifies "malunion" and "subsequent encounter" for the fracture.
• Verify the fracture was initially non-displaced and located in the proximal phalanx of the thumb.
• If the thumb is specified (e.g., right or left), a more specific code should be used.