Abstract: The present invention is directed to an exchange clearinghouse, to provide an improved method of processing all 340B Drug Pricing Program claims for all involved parties, to easily identify and report the 340B claims as well as overcome any challenges of the prior art without compromising security or accuracy. More particularly, the invention is a method that can alter, change, or reclassify previously adjudicated pharmacy claims (original claims) through a system, outside of and unrelated to the system used by the pharmacy service provider who adjudicated the original claim. This creates a reversing claim of the original claim and recreates an altered, changed or reclassified original claim. The Method also allows for the collection and reporting of accurate quantities of the original claim in which 340B priced drugs were used.