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

This code signifies a fracture of the third lumbar vertebra where the specific type of fracture (e.g., compression, burst) is not documented. The "subsequent encounter" indicates the patient is receiving follow-up care for this fracture, and "nonunion" means the bone has failed to heal completely after a reasonable period.

Apply this code when a patient presents for ongoing management of a previously diagnosed, unspecified L3 vertebral fracture that has not united. This would be used for appointments related to monitoring healing progress, evaluating nonunion, or planning interventions for the nonunion.

• Ensure documentation clearly states "nonunion" for the fracture.
• Verify this is not the initial encounter for the fracture.
• Confirm the specific lumbar vertebra involved is the third (L3).