Neg:
Request and Response and MedRequest profiles

re the text:

"Must Support elements in this profile
Client systems

All elements with a minimum cardinality of 1 that are also marked Must Support are essential for the responder to identify the applicable plan rules and accurately determine patient costs and coverage. The submitter MUST ensure that content in these elements is accurate and complete in order to receive reliable information in the response.
Responding systems

MUST make use of all pertinent information provided in the Claim request when determining cost and coverage"

What about element not marked with Must Support?

• are they non essential? and if so why make them min = 1
• if they are not needed should be omitted from the profile
• if you want them if available then they should be min = 0 and Must Support.

Additionally if you have a MustSupport on a subelement and not on the element what does that mean? ( see ClaimResonse.addItem)

Medrequest.reasonCode is min=0 why is that in the differential? suggest removing it