Stylistically using clinical/administrative throughout the guide is not very readable, and will make most readers ask the question "what is the difference?" instead of what is believed to be the commenter's  intent is to answer the question "what about administrative data?" This second question is addressed in the introduction to the guide. in the context of this guide, “clinical data” means any information a provider holds in a patient’s health record. The format of the data exchanged is not limited to FHIR resources, but includes C-CDA documents, pdfs, text files and other types of data. There may be requests for payloads of clinical records of care such as CCD Documents, clinical data sets that may be represented in a FHIR Bundle (or C-CDA on FHIR Documents), and clinical data such as a specific FHIR resource.