Fatigue fracture of vertebra, site unsp, init for fx

This code signifies a stress fracture of an unidentifiable vertebra, resulting from repetitive stress rather than a single traumatic event. It indicates the patient is receiving initial active treatment for this specific vertebral fatigue fracture.

Apply this code when documentation clearly states a fatigue or stress fracture of a vertebra, but the specific vertebral level (e.g., cervical, thoracic, lumbar) is not documented. This code is appropriate for the initial phase of treatment, such as surgical repair, cast application, or active management of the fracture.

• Ensure the documentation specifies "fatigue" or "stress" fracture; otherwise, consider a traumatic fracture code.
• If the vertebral site is identified (e.g., lumbar, thoracic), use a more specific code from the M48.4- series.
• Always confirm the encounter type (initial, subsequent, sequela) to select the correct 7th character.