Unsp fracture of left patella, init for opn fx type 3A/B/C

This code signifies an initial encounter for a fracture of the left kneecap where the specific type of fracture (e.g., transverse, comminuted) is not documented. Crucially, it indicates an open fracture, meaning the skin and soft tissues were significantly compromised, exposing the bone, and classified as a severe Type IIIA, IIIB, or IIIC according to the Gustilo-Anderson classification.

Use this code when documentation clearly states an open fracture of the left patella, categorized as Gustilo-Anderson Type IIIA, IIIB, or IIIC, and it is the patient's first time receiving active treatment for this injury. This applies when the specific morphology of the patellar fracture itself is not detailed in the medical record.

• Ensure the documentation explicitly states "left patella" and "open fracture type IIIA, IIIB, or IIIC."
• Verify this is the initial encounter for active treatment of the fracture, not a follow-up or sequela.
• If the specific type of patellar fracture (e.g., transverse, longitudinal) is documented, a more specific code from the S82.00- series should be used.