USCDI
United States Core Data for Interoperability
United States Core Data for Interoperability — the ONC-defined data set required to be exchangeable by certified EHRs.
1 min read · Last reviewed May 23, 2026
At a glance
- Category
- Compliance Program
- Acronym for
- United States Core Data for Interoperability
- Primary sources
- 1
- Workspace handoff
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Where this comes up
Compliance committees and practice managers operate at this level — written policy, workforce training, sanction policy, monitoring and auditing cadence, response and corrective action. The seven elements of an effective compliance program (OIG) are the scaffolding; this term lives somewhere on that scaffold.
Full definition
What it is in practice
ONC USCDI is updated annually. ONC certification programs require CEHRT to support the current USCDI version.
How it shows up in your practice
Confirm your EHR's USCDI version. The data set drives what patients and apps can extract through the certified API.
Sources
- ONC — 21st Century Cures Act Rulehttps://www.healthit.gov/topic/oncs-cures-act-final-rule
Look up USCDI versions in Ask D3
Open ask d3 →Related terms
- Compliance ProgramFHIR (Fast Healthcare Interoperability Resources)HL7 standard for exchanging healthcare data electronically through RESTful APIs and structured resources.
- Compliance ProgramInformation BlockingUnder the 21st Century Cures Act, a practice, action, or interference (other than required by law or covered by an exception) that prevents access, exchange, or use of electronic health information.
- Compliance ProgramEHI (Electronic Health Information)Electronic protected health information to the extent that it would be included in a designated record set, plus other identifying health information held by an actor.
D3rx is a healthcare-billing and compliance research aid maintained by D3rx Inc. Articles are drafted by an LLM (Anthropic Claude) against primary HHS, OCR, CMS, eCFR, NIST, and state-regulator publications, and reviewed for restraint and source fidelity by the D3rx team.
Reviewer status: a named credentialed reviewer (CHC, CHPC, or healthcare attorney) is being engaged. Until that engagement is finalized, this page does not claim credentialed review.
Related across the archive
- GlossaryInformation BlockingUnder the 21st Century Cures Act, a practice, action, or interference (other than required by law or covered by an exception) that prevents access, exchange, or use of electronic health information.
- GlossaryEHI (Electronic Health Information)Electronic protected health information to the extent that it would be included in a designated record set, plus other identifying health information held by an actor.
- GlossaryFHIR (Fast Healthcare Interoperability Resources)HL7 standard for exchanging healthcare data electronically through RESTful APIs and structured resources.
- ComplianceInformation Blocking Rule (21st Century Cures Act): Compliance for Medical PracticesThe ONC Information Blocking Rule reaches every healthcare provider, with the Part 171 exceptions and CMS-administered provider disincentives that hit MIPS payment. Here is what the rule actually prohibits, the exceptions that apply to practices, and how enforcement landed in 2024.
- BillingWhat to Do When a Payer Says You're UnderbillingGot a letter saying you're underbilling? Here's what it actually means, whether you should worry, and what action to take.
- ComplianceAmbulatory Surgery Center Compliance: CMS + State + Infection Control42 CFR Part 416 Conditions for Coverage, CMS State Operations Manual Appendix L, the ASC Infection Control Surveyor Worksheet, and where state ASC licensure tightens the standard.
- ComplianceAnnual HIPAA Training Curriculum (What to Cover + How to Document)A 2026 annual HIPAA training curriculum for small healthcare practices — eight required modules under 45 CFR 164.530(b) and 45 CFR 164.308(a)(5), with documentation templates.
- ComplianceAnti-Kickback Statute: What Medical Practices Actually Need to Know (42 USC § 1320a-7b(b))The federal Anti-Kickback Statute is intent-based, criminal-grade, and the most common fraud-and-abuse theory in OIG enforcement. Here is what AKS actually prohibits, how the safe harbors function, and where practices get caught.
This glossary entry is a research aid for billing and compliance staff. It does not provide legal, medical, or financial advice and does not replace counsel. References cited link to primary sources at HHS, OCR, CMS, eCFR, NIST, and the relevant payer or industry body.