Fx unsp phalanx of l idx fngr, subs for fx w nonunion

This code describes a situation where a patient has sustained a fracture of an unidentifiable phalanx bone in their left index finger, and the bone has failed to heal properly after an initial treatment. This indicates a persistent break in the bone that has not united, requiring further medical intervention.

This code is appropriate for documenting follow-up care for a left index finger phalanx fracture that has not healed as expected, such as during an evaluation for delayed union or nonunion. It would be used when the specific phalanx (proximal, middle, or distal) involved in the fracture is not documented.

• Ensure documentation clearly states "nonunion" or "failed to heal" for the fracture.
• Verify the encounter is for subsequent care, not the initial treatment of the fracture.
• Confirm the fracture is located in the left index finger and the specific phalanx is unspecified.