Add Contract to Index. Revise 13.0.1 Introduction to read: The Financial module covers the resources and services provided by FHIR to support the costing, contracting, financial transactions, and billing which occur within a healthcare provider as well as the eligibility, enrollment, authorizations, claims, contracts, and payments which occur between healthcare providers and insurers and the reporting and notification between insurers, subscribers, patients, and other parties.

Add Contract to Finance Interactions model per attached visio (open to discussing whether this is the right change). Add row in 13.0.2.1 Support Administrative with description: Legally enforceable, formally recorded unilateral or bilateral directive i.e., a policy or agreement. E.g., insurance policy referenced by Coverage; a provider's network contract with a payer; or a patient's consent directive with a provider to suppress claims to a payer for services for which the patient pays out of pocket in full.