---
tags: USCDI v4
title: Introduction
---

source: https://hackmd.io/@erichaas/BJXs2R672


# Introduction

## New Data Classes and Data Elements

The following table summarizes the data classes and data elements for *USCDI v4*:


source: [ONC Health IT Standards Bulletin Issue 2023-2](https://www.healthit.gov/sites/default/files/page/2023-07/Standards_Bulletin_2023-2.pdf)

References:
- ONC USCDI website: `https://www.healthit.gov/isa/united-states-core-data-interoperability-uscdi#uscdi-v4`
- [ONC USCDI v4 PDF](https://www.healthit.gov/sites/isa/files/2023-07/Final-USCDI-Version-4-July-2023-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 Profiles, Extensions, and Standard Vocabulary when possible.
4. Choose what is implementable today vs aspirational content.

## US Core Proposals:

- [Allergies and Intolerances](/vdnc6ek3RP-n9c7mOSIJCA)
- [Encounter](/WksTXCjiR7KQT1HfH-nJ8g)
- [Facility Information](/xmpbtnmxSzK0m2_fdm2dcA)
- [Goals](/a3eMn2mMRm6fj_y1lw9MSA)
- [Health Status Assessments](/3J_QYnLGSKSx2YoawRUmBA)
- [Laboratory](/Ed2-9T2QQNihYUksWs55TQ)
- [Medications](/B94huB65SnSIA5GuG28WNQ)
- [Procedures](/NhGJEbDVT3G3PcBzJ_FIJA)
- [Vital Signs](/Z9WsUlwfTHy6yrnZXXdzLw)
- [Other USCDI V4 Changes](/U_pTzysOTEqQfeGEcPgRZA)

## Open questions to ONC:

:thinking_face: ”What questions will we have?"