The data contents are the Observation resource type of the FHIR standard. The first table lists the profiles in production use that are used by an application associated with the Personal Health Record. The second table contains the other profiles.
Read more about STU3 Observation resource type of the FHIR standard (hl7.org)(opens new window)
Read more about R4 Observation resource type of the FHIR standard (hl7.org)(opens new window)