I have a patient that was diagnosed with pseudoarthrosis, post laminectomy syndrome, lumbar stenosis with neurogenic claudication and scoliosis, with 2 previous correction surgeries for the scoliosis, who is now status post T6-L3 lumbar fusion. Do I use the aftercare surgery Z47.89 code or continue to use the above diagnoses in M1021 and M1023 or do I use both Z47.89 and the diagnoses? Please help!! Thanks in advance!!!!