Nondisp longitud fx r patella, subs for clos fx w nonunion

This code signifies a follow-up encounter for a right kneecap fracture that runs lengthwise, where the bone fragments are still aligned. Crucially, the fracture has failed to heal properly, indicating a nonunion despite the initial closed reduction.

Apply this code when a patient presents for ongoing management of a previously diagnosed nondisplaced longitudinal fracture of the right patella. This is specifically for situations where imaging or clinical assessment confirms that the fracture has not united and is still considered a closed injury.

• Ensure documentation clearly states "nonunion" for the right patella fracture.
• Verify the fracture type is "nondisplaced longitudinal" and the encounter is "subsequent."
• Do not use for initial encounters or for fractures that have healed.