Unstable burst fx third lum vertebra, subs for fx w nonunion

This code signifies an unstable burst fracture affecting the third lumbar vertebra, indicating a severe injury where the vertebral body is crushed in multiple directions, potentially compromising the spinal canal. The "unstable" designation implies a high risk of neurological deficit or further spinal deformity.

Apply this code when documenting a patient's follow-up visit for an L3 burst fracture that has not healed properly (nonunion). This is used after the initial treatment phase, during ongoing management of the fracture's failure to unite.

• Ensure documentation clearly states "unstable burst fracture" and specifies the "third lumbar vertebra."
• Confirm the encounter is for a "subsequent" visit and that "nonunion" of the fracture is explicitly documented.
• Do not use for initial encounters or for fractures that are healing normally.