Unsp traum displ spondylolysis of fourth cervcal vert, init

This code signifies a traumatic forward slippage of the C4 vertebra over C5, where the exact nature of the displacement is not specified. This injury is a result of trauma, and the fracture is closed, meaning the skin is intact.

Apply this code for initial encounters when documentation confirms a traumatic spondylolisthesis of the C4 vertebra, but the specific type of displacement (e.g., anterior, posterior) is not detailed. The medical record must clearly indicate the traumatic origin and that the fracture is closed.

• Ensure documentation specifies "traumatic" to differentiate from degenerative spondylolisthesis.
• Verify the encounter is "initial" for this specific injury; subsequent care would use a different seventh character.
• Confirm the fracture is "closed" as open fractures have distinct coding.