Using the posterior approach the surgeon made a midline incision above the underlying vertebrae and dissected down to the paravertabral muscles and retracted then. The ligamentum flavum, lamina, and fragments of a ruptured C3-C4 intervertebral disc were all removed. The surgeon also removed a portion of the facet to relieve the compressed nerve of the C4 vertebrae. He then placed a free-fat graft over the exposed nerve and the paravertabral muscles were repositioned. The patient was then closed using layered sutures and taken to recovery. Which is the correct code(s)?
