G9220 HCPCS - PNEUMOCYSTIS JIROVECI PNEUMONIA PROPHYLAXIS NOT PRESCRIBED WITHIN 3 MONTHS OF LOW CD4+ CELL COUNT BELOW 500 CELLS/MM3 OR A CD4 PERCENTAGE BELOW 15% FOR MEDICAL REASON (I.E., PATIENT'S CD4+ CELL COUNT ABOVE THRESHOLD WITHIN 3 MONTHS AFTER CD4+ CELL COUNT BELOW THRESHOLD, INDICATING THAT THE PATIENT'S CD4+ LEVELS ARE WITHIN AN ACCEPTABLE RANGE AND THE PATIENT DOES NOT REQUIRE PCP PROPHYLAXIS)