Colles' fx unsp rad, subs for opn fx type 3A/B/C w malunion

This code describes a Colles' fracture, a specific type of distal radius fracture, that has previously been treated but is now presenting with malunion. The fracture was an open fracture, classified as type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination. The current encounter is for ongoing management of this complicated healing process.

Use this code for patients presenting with a documented Colles' fracture of an unspecified radius that has healed in a misaligned or deformed position. This applies when the initial injury was an open fracture of a severe type (IIIA, IIIB, or IIIC), and the patient is receiving follow-up care or treatment for the malunion. This code is appropriate for subsequent encounters after the initial active treatment phase.

• Ensure documentation clearly specifies "malunion" and the original fracture was an open Colles' fracture, type IIIA, IIIB, or IIIC.
• Verify the encounter is for subsequent care related to the malunion, not the initial treatment of the acute fracture.
• Do not use if the fracture is healing normally or if the malunion is due to a different type of radius fracture.