Blood/Blood Products and Drugs Classified in Separate APCs for

90.1 - Blood/Blood Products and Drugs Classified in Separate APCs for Hospital Outpatients (Rev. 496, Issued: 03-04-05, Effective: 07-01-05, Implementation: 07-05-05) Proper Billing for Blood Products and Blood Storage and Processing Refer to Pub.100-04, Medicare Claims Processing Manual, Chapter 4, §231 regarding billing for blood and blood products under the Hospital Outpatient Prospective Payment System (OPPS).