CMM-602: Cervical Total Disc Arthroplasty

Cervical TDA (single‑ or two contiguous levels C3–C7), revision of failed TDA to fusion, and TDA for adjacent‑segment disease are medically necessary when performed in skeletally mature patients with an FDA‑approved device used per labeling, recent (≤6 months) concordant imaging (flexion/extension views when applicable), appropriate objective exam findings, and documented failure of required conservative therapies (unless urgent/emergent conditions warrant immediate surgery). Excluded/contraindicated are patients <18 or >60, prior surgery at the index level or prior adjacent fusion, procedures >2 or non‑contiguous levels, active infection, radiographic instability or significant anatomic deformity, metabolic bone disease or severe spondylosis/OPLL/facet arthropathy, implant material allergy, uncontrolled significant mental/behavioral disorders, combined prosthesis-plus-fusion procedures, and other listed conditions.

"Severe poorly controlled diabetes mellitus requiring insulin treatment is an exclusion."