Unsp fx r forearm, subs for opn fx type I/2 w nonunion

This code describes a fracture of the right forearm where the specific bone (radius or ulna) is not documented, and the fracture is an open type I or II. The patient is in a subsequent phase of care, and the fracture has failed to heal properly, resulting in a nonunion.

This code is appropriate for follow-up encounters when a patient with a previously diagnosed, unspecified open type I or II fracture of the right forearm presents with evidence of nonunion. This would include situations where surgical intervention for nonunion is being planned or performed, or during ongoing conservative management of the nonunion.

• Ensure documentation clearly states "right forearm" and "unspecified fracture" (e.g., "forearm fracture NOS").
• Verify the open fracture type is documented as I or II, and the encounter is for subsequent care.
• Confirm the presence of nonunion is explicitly documented by the provider.