Nondisp lateral mass fx first cervcal vert, init for opn fx

This code signifies a break in the lateral mass of the atlas (C1 vertebra) that has not shifted from its normal anatomical position. It specifically indicates that the fracture is an open fracture, meaning there is an associated wound communicating with the fracture site. This is the initial encounter for treatment of this injury.

Use this code for patients presenting with a newly diagnosed, non-displaced fracture of the C1 lateral mass where the skin and soft tissues are compromised, exposing the fracture. Documentation should clearly state "nondisplaced," "lateral mass," "C1," and "open fracture," along with "initial encounter."

• Differentiate between displaced and nondisplaced fractures; this code is only for nondisplaced.
• Confirm the encounter type (initial, subsequent, sequela) as this code is specific to the initial encounter.
• Ensure documentation explicitly states "open fracture" to justify the 7th character 'B'.