Nondisp trimalleol fx l low leg, init for opn fx type 3A/B/C

This code signifies a fracture involving all three malleoli (medial, lateral, and posterior) of the left ankle, where the bone fragments remain in their anatomical position. It specifically indicates that the fracture is open, meaning the skin and soft tissues are compromised, and is classified as a severe open fracture type (IIIA, IIIB, or IIIC) according to the Gustilo-Anderson classification. This code is used for the initial treatment phase of such an injury.

Apply this code for a patient presenting with a newly diagnosed, non-displaced trimalleolar fracture of the left lower leg that has an associated open wound exposing the bone. This is appropriate when the open fracture is documented as Gustilo-Anderson type IIIA, IIIB, or IIIC, and the patient is receiving initial active treatment for the injury.

• Confirm documentation explicitly states "nondisplaced" and "trimalleolar" for the left lower leg.
• Verify the open fracture type is clearly documented as IIIA, IIIB, or IIIC; do not use for type I or II.
• Ensure this is the initial encounter for treatment; subsequent care will require a different encounter character.