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

This diagnosis code indicates a fracture of an unspecified phalanx in the left ring finger that has failed to heal properly. The "nonunion" signifies that the bone fragments have not united after a sufficient period, often requiring further intervention.

This code is appropriate for follow-up encounters where a patient is being treated for a previously diagnosed left ring finger phalanx fracture that has not shown signs of healing. It applies when the physician documents nonunion and is managing the ongoing care, which may include surgical planning or conservative management for the nonunion.

• Ensure documentation clearly states "nonunion" of the fracture.
• Verify the specific finger (ring) and hand (left) are documented.
• Confirm this is a subsequent encounter, not the initial treatment for the fracture.