Colles' fx left rad, subs for opn fx type 3A/B/C w nonunion

This code signifies a Colles' fracture, a specific type of distal radius fracture, in the patient's left arm. The fracture is an open fracture, classified as type IIIA, IIIB, or IIIC, indicating significant soft tissue damage. The "subsequent encounter" aspect means the patient is receiving ongoing care for this fracture, which has unfortunately not healed as expected, resulting in a nonunion.

Use this code for follow-up visits, cast changes, or other ongoing management of a left Colles' fracture that was initially open (type IIIA, IIIB, or IIIC) and has progressed to a nonunion. This applies when the patient is no longer in the initial active treatment phase but is still receiving care for the unhealed fracture.

• Ensure documentation clearly specifies "left" radius and "Colles'" fracture.
• Verify that the fracture was initially classified as an open type IIIA, IIIB, or IIIC.
• Confirm the encounter is for subsequent care of a nonunion, not initial treatment or routine healing.