Nine-oh-eight-three-six means 90836. P-S-Y-T-X means psychotherapy. W means with. P-T means patient. W means with. E-M means evaluation and management. Four-five means 45. M-I-N means minutes. This is a code used by psychologists and other mental health providers to indicate that they spent 45 minutes doing therapy with a patient, and that this session included an evaluation and management service.