Oth fracture of third lum vertebra, subs for fx w nonunion

This code signifies a fracture of the third lumbar vertebra, excluding a compression fracture, that has not healed properly. The patient is currently receiving care for this unhealed fracture, indicating a nonunion.

Apply this code when a patient presents for follow-up treatment of a previously diagnosed L3 vertebral fracture, and imaging or clinical assessment confirms that the bone fragments have failed to unite. This is appropriate for ongoing management of the nonunion, such as surgical intervention for fusion or continued conservative management.

• Ensure documentation clearly states "nonunion" and specifies the third lumbar vertebra.
• Verify that this is a subsequent encounter for the fracture, not the initial treatment.
• Do not use for compression fractures of the L3 vertebra; a different code would apply.