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)?

A.63040
B.62075
C.63082
D.63170