ValueSet-pedcan-central-nervous-system-involvement-vs

Include these codes as defined in http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl

Code	Display
C116833	CNS1: The status of central nervous system leukemia at diagnosis, where there is an absence of blasts on a cerebral spinal fluid cytospin preparation, regardless of the number of white blood cells.
C116834	CNS2: The status of central nervous system leukemia at diagnosis, where there are less than 5 white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is positive for blasts; or greater than 5 white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is considered negative by Steinherz/Bleyer algorithm.
C116835	CNS3: The status of central nervous system leukemia at diagnosis, where there are more than 5 white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is positive for blasts; with or without clinical signs of leukemia.
C116836	CNS2a: The status of central nervous system leukemia at diagnosis, where there are less than 10 red blood cells and less than 5 white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is positive for blasts.
C116837	CNS2b: The status of central nervous system leukemia at diagnosis, where there are 10 or more red blood cells and less than 5 white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is positive for blasts.
C116838	CNS2c: The status of central nervous system leukemia at diagnosis, where there are 10 or more red blood cells and 5 or more white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is positive for blasts and is considered negative by Steinherz/Bleyer algorithm.
C116840	CNS3a: The status of central nervous system leukemia at diagnosis, where there are less than 10 red blood cells and 5 or more white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is positive for blasts.
C116841	CNS3b: The status of central nervous system leukemia at diagnosis, where there are 10 or more red blood cells and 5 or more white blood cells per microliter on a cerebral spinal fluid cytospin preparation that is considered positive by Steinherz/Bleyer algorithm.
C116843	CNS3c: The status of central nervous system leukemia at diagnosis, where there are clinical signs of central system leukemia (such as facial nerve palsy, brain/eye involvement, or hypothalamic syndrome).