source: https://hackmd.io/@erichaas/rk0FJ7wKp/%2Fr-VtK_20Rw25Vf81p5Lyvg
parallel C-CDA design: https://confluence.hl7.org/display/SD/USCDI+v5+Implementation+Guidance

# Introduction
## New Data Classes and Data Elements
### The following table summarizes the final data classes and data elements for *USCDI v5*:

### What has changed between the Draft and Final versions:


see the Other [Other USCDI V5 Changes](/DIsIjQ0DTCGCWg0JO3X0KQ) below for details...
<!--  -->
source:
1. [*DRAFT* ONC Health IT Standards Bulletin Issue Issue 2024-1](https://www.healthit.gov/sites/default/files/page/2024-01/Standards_Bulletin_2024-1.pdf)
1. [*FINAL* ONC Health IT Standards Bulletin Issue Issue 2024-1](https://www.healthit.gov/topic/standardsbulletin_24-2)
References:
*DRAFT*:
- [ONC USCDI website](https://www.healthit.gov/isa/united-states-core-data-interoperability-uscdi#draft-uscdi-v5)
- [ONC USCDI v5 PDF](https://www.healthit.gov/isa/sites/isa/files/2024-01/Draft-USCDI-Version-5-January-2024-Final.pdf)
*FINAL*:
- [ONC USCDI website](https://www.healthit.gov/isp/united-states-core-data-interoperability-uscdi#uscdi-v5)
- [ONC USCDI v5 PDF](https://www.healthit.gov/isp/sites/isp/files/2024-07/USCDI-Version-5-July-2024-Final.pdf)
## Design Principles
1. Our goal is that US Core "defines the **minimum** set of FHIR RESTful interactions for each of the US Core Profiles to access patient data. By establishing **the “floor” of standards** to promote interoperability and adoption through common implementation."
2. Meets the certification requirement and "allows for further standards development evolution for specific uses cases."
3. Use existing FHIR R4 Profiles, Extensions, and Standard Vocabulary when possible.
4. Align with CCDA when possible
6. Link terminology directly to the FHIR® Terminology Service for VSAC Resources,[Value Set Authority Center (VSAC)](https://vsac.nlm.nih.gov/), where applicable and, as a result, align terminology between US Core and HL7 C-CDA.
7. Base our decisions on what is implementable today vs creation of new "aspirational" content.
## US Core Proposals:
- [Clinical Notes](/R1V8Iv_tSEOiBie6A8_2Ew)
- [Immunization](/tkPzO4P0QgGo1oAtjN3Btw)
<!-- - [Laboratory](/jsNkQMCMSOOhDmddK42JXA) -->
- [Medications](/3T40gLiqRAyylUvGwo2woQ)
- [ADI Observation](/WZ1M60dQQZuQ6ZdbMFSuig)
- [Sex Parameter for Clinical Use](/faojF1fRTWKG9FLNMHRLrA)
- [Orders](/zM3keCddRxSj1SEfOP7QNQ)
- [Patient Demographics/Information](/nkUTDqO8T96ZjDYAgRawlA)
- [Provenance](/mliVyNA6QH2HFQam0JdVzQ)
- [Other USCDI V5 Changes](/jQ0DTCGCWg0JO3X0KQ)
## Open questions to ONC:
- [:thinking_face:](/F6rxWi9ARCeqtTVSMEbI9w)
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