Smith's fx unsp radius, subs for opn fx type I/2 w malunion

This code signifies a Smith's fracture, which is a reverse Colles' fracture involving the distal radius with volar displacement of the distal fragment. In this specific instance, the fracture is of an unspecified radius, has been previously treated, and is now experiencing malunion, meaning the bone has healed in an incorrect anatomical position. The original injury was an open fracture of Type I or II severity.

This code is appropriate for follow-up encounters where a patient is being managed for a malunited Smith's fracture of the distal radius. This includes situations where the malunion is being assessed, monitored, or undergoing treatment such as corrective osteotomy. It should be used when the initial open fracture was classified as Type I or Type II.

• Ensure documentation clearly specifies "malunion" as the complication of healing.
• Verify the original fracture was an open Type I or II to justify the fifth character.
• This code is for subsequent encounters; use an initial encounter code for the acute injury.