Fatigue fx vertebra, lumbar region, subs for fx w delay heal

This code signifies a stress fracture of a lumbar vertebra that is not healing at the expected rate. It indicates a follow-up encounter for a patient whose vertebral fatigue fracture in the lower back is experiencing delayed union.

Apply this code for patients presenting for ongoing management of a lumbar vertebral fatigue fracture where healing is progressing slower than anticipated. Documentation should clearly state "delayed healing" or "delayed union" of a lumbar stress fracture, often noted in follow-up imaging or clinical assessment.

• Ensure documentation specifies "fatigue fracture" or "stress fracture" of the vertebra, not a traumatic fracture.
• Verify the encounter is for subsequent care, not the initial treatment of the fracture.
• Confirm the fracture location is specifically in the lumbar region.