In the US, an EOB has very specific patient purpose as a summary of an individual claim. But the FHIR authors acknowledge a broader use case for this resource.
> Typically the EOB is only used to convey Claim (use=claim) and the associated ClaimResponse information to patients or subscribers. It may also be used to convey consolidated predetermination and preauthorization request and response information to patients or subscribers. An EOB will never be created for patient or subscriber information exchange if an error was detected in the Claim.
>
> It is also recognized that "EOB" is a term that carries additional meaning in certain areas of the industry. When the resource was originally being developed there was substantial discussion about the adoption of an alternative name for the resource but after much discussion it was resolved that the ExplanationOfBenefit name has the advantage of familiarity that has been proven through the early adoption of the resource for multiple purposes.
>
> Note: when creating profiles for EOB as a patient focused information exchange the payment details, other than date, should be excluded if the payee is the provider as that would leak business confidential information.