Collapsed vertebra, NEC, occipito-atlanto-axial region, init

This code signifies a vertebral collapse in the upper cervical spine, specifically involving the occiput, atlas (C1), or axis (C2), that is not due to trauma or osteoporosis. It indicates the initial phase of treatment for this specific type of non-traumatic fracture.

Use this code for patients presenting with a newly diagnosed collapsed vertebra in the occipito-atlanto-axial region, where the collapse is attributed to an underlying condition other than injury or senile osteoporosis. Documentation should clearly state the location of the collapsed vertebra and confirm it is the initial encounter for this specific fracture.

• Ensure documentation specifies "initial encounter" for the fracture.
• Distinguish from traumatic vertebral fractures (S12.xx) or osteoporotic fractures (M80.xx).
• Code any underlying condition causing the collapse (e.g., metastatic disease, tumor) as a primary diagnosis if applicable.