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

This code signifies a stress fracture of a cervical vertebra that occurred due to repetitive or excessive force, not a single traumatic event. The patient is currently in a phase of treatment where the fracture is not healing at the expected rate.

Apply this code for patients presenting for follow-up care of a previously diagnosed cervical vertebral fatigue fracture that is demonstrating delayed union or nonunion. Documentation should clearly state "fatigue fracture," "stress fracture," or similar terminology for the cervical spine, along with evidence of delayed healing.

• Ensure documentation specifies "fatigue fracture" or "stress fracture" to differentiate from acute traumatic fractures.
• Verify the cervical region is explicitly documented; do not use for other spinal regions.
• This "subsequent encounter" code requires prior treatment for the initial injury; do not use for the initial diagnosis.