Oth traum nondisp spondylolysis of fourth cervcal vert, sqla

This code signifies a long-term complication or late effect resulting from a previous traumatic injury that caused a nondisplaced forward slippage of the fourth cervical vertebra. The initial injury has healed, but the patient is now experiencing residual symptoms or conditions directly attributable to that past spondylolisthesis.

Apply this code when documentation clearly indicates a sequela (e.g., chronic pain, neurological deficits, instability) stemming from a previously sustained traumatic, nondisplaced spondylolisthesis of C4. This code is appropriate for encounters where the initial injury is no longer acute, and the focus of care is on the lingering effects. Documentation should specify the C4 level and the traumatic origin.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., chronic pain, radiculopathy).
• Ensure the documentation explicitly states "sequela" or describes a chronic condition directly linked to the past traumatic spondylolisthesis.
• Distinguish from acute traumatic spondylolisthesis (initial encounter) or non-traumatic (degenerative) spondylolisthesis.