Spondylolysis, cervical region

This code identifies a defect or stress fracture in the pars interarticularis of a cervical vertebra. Spondylolysis in the cervical region can lead to neck pain, stiffness, and potentially nerve root impingement if associated with instability. It represents a structural abnormality in the bony arch of the cervical spine.

Apply this code when documentation explicitly states spondylolysis affecting any segment of the cervical spine. This diagnosis is typically supported by imaging studies such as X-rays, CT scans, or MRI, which visualize the pars defect. Use this code for both symptomatic and incidentally discovered cervical spondylolysis.

• Do not confuse with spondylolisthesis (vertebral slippage), though spondylolysis can be a precursor.
• Ensure documentation specifies "cervical region" to differentiate from other spinal areas.
• Code any associated neurological symptoms (e.g., radiculopathy) separately.