G9574 HCPCS - ADULT PATIENTS 18 YEARS OF AGE OR OLDER WITH MAJOR DEPRESSION OR DYSTHYMIA WHO DID NOT REACH REMISSION AT SIX MONTHS AS DEMONSTRATED BY A SIX MONTH (+/-60 DAYS) PHQ-9 OR PHQ-9M SCORE OF LESS THAN FIVE; EITHER PHQ-9 OR PHQ-9M SCORE WAS NOT ASSESSED OR IS GREATER THAN OR EQUAL TO FIVE