This page describes the process for making use of Excel (or OpenOffice) spreadsheets to design and maintain FHIR data types, resources and profiles . If you haven't already, please read FHIR Guide to Authoring Resources or FHIR_Spreadsheet_Profile_Authoring and Maintaining FHIR Core for important contextual information on how to set up the build environment to make use of the spreadsheet you're about to edit, where to find the appropriate templateguidelines for making design decisions, etc.
The use of spreadsheets to develop and maintain profiles is expected to be a near term solution with more sophisticated (and user-friendly) tooling currently under development. There are no plans to invest in similar enhanced tooling for authoring resources because there aren't going to be that many and they'll all be developed within HL7.
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