The answer depends on the relationship, if any, between the covered entity, the EHR system developer, and the app chosen by the individual to receive the individual’s ePHI. A business associate relationship exists if an entity creates, receives, maintains, or transmits ePHI on behalf of a covered entity (directly or through another business associate) to carry out the covered functions of the covered entity. A business associate relationship exists between an EHR system developer and a covered entity. If the EHR system developer does not own the app, or if it owns the app but does not provide the app to, through, or on behalf of, the covered entity – e.g., if it creates the app and makes it available in an app store as part of a different line of business (and not as part of its business associate relationship with any covered entity) – the EHR system developer would not be liable under the HIPAA Rules for any subsequent use or disclosure of the requested ePHI received by the app.
If the EHR system developer owns the app or has a business associate relationship with the app developer, and provides the app to, through, or on behalf of, the covered entity (directly or through another business associate), then the EHR system developer could potentially face HIPAA liability (as a business associate of a HIPAA covered entity) for any impermissible uses and disclosures of the health information received by the app. For example, if an EHR system developer contracts with the app developer to create the app on behalf of a covered entity and the individual later identifies that app to receive ePHI, then the EHR system developer could be subject to HIPAA liability if the app impermissibly uses or discloses the ePHI received.