The current design of the PCT IG has flaws in that it requires a Bundle identifier to be transmitted to the patient or patient app in order to do the subsequent steps of GET Bundle.

The transmission of a Bundle is impossible to implement in practice. A simpler design would have the AEOBs be available for searching after the patient authenticates with the payer, using the same RESTful exchange already implemented for CMS Patient Access APIs, reducing burden on implementing payers.

The original Bundle mechanism and Bundle search that is being investigated is designed to accommodate requirements that:

1. AEOBs should be grouped together for a single period of care
2. AEOBs should be linked back to the GFE in some fashion

However, this creates problems with searching Bundles.

A simpler design that accomplishes these requirements is that the EOBs should include a group identifier in EOB.identifier. This allows for searching by that identifier to identify grouped AEOBs.