Nondisp longitud fx r patella, init for opn fx type 3A/B/C

This code signifies a break in the right kneecap that runs lengthwise, without any displacement of the bone fragments. The fracture has broken through the skin and surrounding soft tissues, indicating a severe open injury. The specific "IIIA, IIIB, or IIIC" classification refers to the extent of soft tissue damage and contamination, with IIIC involving arterial injury.

Apply this code when documentation clearly indicates a longitudinal fracture of the right patella that is not displaced. Crucially, the injury must be an open fracture, specifically categorized as Gustilo-Anderson type IIIA, IIIB, or IIIC, and this is the initial treatment encounter for the injury.

• Ensure the documentation specifies "nondisplaced" and "longitudinal" for the patellar fracture.
• Verify the Gustilo-Anderson classification (IIIA, IIIB, or IIIC) for the open fracture type.
• Confirm this is the patient's first visit for this specific injury to use the "initial encounter" character.