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

This code describes a situation where a patient has a fracture in the upper part of a finger bone (not the thumb) that was previously treated but has healed incorrectly, resulting in a malunion. This indicates a follow-up visit where the primary concern is the suboptimal healing of the fracture.

Use this code for subsequent encounters when a patient presents with a previously diagnosed and treated nondisplaced proximal phalanx fracture of any finger (excluding the thumb) that has healed in an anatomically incorrect position. This applies when the malunion is the focus of the current visit, such as for evaluation, planning further intervention, or managing complications related to the malunion.

• Ensure documentation clearly specifies "nondisplaced" and "proximal phalanx" of a finger other than the thumb.
• Confirm the encounter is for a "subsequent" visit related to the fracture's malunion, not the initial treatment.
• Verify the malunion is explicitly documented as the reason for the encounter.