Smith's fx unsp rad, subs for opn fx type 3A/B/C w nonunion

This code describes a Smith's fracture, which is a reverse Colles' fracture involving the distal radius with volar displacement of the distal fragment. Specifically, this code indicates that the fracture is an open type IIIA, IIIB, or IIIC, meaning there is significant soft tissue damage and contamination, and that the bone fragments have failed to unite after a previous treatment attempt. This represents a complicated healing process requiring further intervention.

This code is appropriate for documenting follow-up care for a patient previously treated for an open Smith's fracture of an unspecified radius that has not healed. It should be used when the patient presents for ongoing management of the nonunion, such as for evaluation of delayed healing, planning for revision surgery, or monitoring of infection. This code is not for initial treatment of the fracture.

• Ensure documentation clearly specifies "nonunion" and the open fracture type (IIIA, IIIB, or IIIC) for accurate code assignment.
• Verify that this is a subsequent encounter, not the initial treatment of the fracture.
• Always code any associated complications, such as osteomyelitis, separately.