CPTAC Terminology GDC Terminology CPTAC Causes of Death Codelist CPTAC Medical Conditions Codelist CPTAC Codelists Terminology Comorbidity Cellosaurus Disease Terminology GDC Value Terminology mCode Terminology mCode Elixhauser Neurological Movement Disorder Value Set Parkinson Disease A progressive disorder of the nervous system marked by muscle tremors, muscle rigidity, decreased mobility, stooped posture, slow voluntary movements, and a mask-like facial expression. C26845 Parkinson Disease C0030567 A progressive degenerative disorder of the central nervous system characterized by loss of dopamine producing neurons in the substantia nigra and the presence of Lewy bodies in the substantia nigra and locus coeruleus. Signs and symptoms include tremor which is most pronounced during rest, muscle rigidity, slowing of the voluntary movements, a tendency to fall back, and a mask-like facial expression. Parkinson's disease CPTAC Parkinson_s_Disease mCode GDC Cellosaurus Disease or Syndrome Parkinson's Disease Parkinson's Disease Parkinson Disease Extrapyramidal Disorder