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

This code signifies a fracture of the kneecap where the specific location or type of fracture within the patella is not documented. It also indicates that the fracture is open, meaning the bone has broken through the skin, and is classified as a severe open fracture (Gustilo-Anderson type IIIA, IIIB, or IIIC) requiring initial treatment.

Utilize this code when documentation confirms an open patellar fracture of an unspecified nature, and the Gustilo-Anderson classification is explicitly stated as type IIIA, IIIB, or IIIC during the patient's initial encounter for treatment. This is appropriate when the specific patellar fracture pattern (e.g., transverse, comminuted) is not yet determined or documented.

• Ensure the documentation clearly specifies an "open" fracture and the Gustilo-Anderson classification (IIIA, IIIB, or IIIC).
• Only use for the initial encounter for treatment of the fracture. Subsequent care will require a different encounter character.
• If the specific patellar fracture type is later identified, a more specific code should be used for subsequent encounters.