Unsp fx r forearm, subs for opn fx type 3A/B/C w nonunion

This code signifies an unspecified fracture of the right forearm that has failed to heal (nonunion) and is currently being managed during a subsequent encounter. The original fracture was an open fracture classified as Type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination.

Apply this code when a patient with a previously diagnosed open right forearm fracture (Type IIIA, IIIB, or IIIC) presents for follow-up care, and the fracture has not united. This is appropriate for ongoing treatment, such as cast changes, wound care, or evaluation for surgical intervention due to the nonunion.

• Ensure documentation clearly specifies "nonunion" for the right forearm fracture.
• Verify the original fracture was an open Type IIIA, IIIB, or IIIC to justify this specific subsequent encounter code.
• Do not use for initial encounters or for fractures that are healing normally.