United States Core Data for Interoperability (USCDI)

The United States Core Data for Interoperability (USCDI) is a standardized set of health data classes and constituent data elements for nationwide, interoperable health information exchange. Review the USCDI Fact Sheet to learn more.

A USCDI Data Class is an aggregation of Data Elements by a common theme or use case.

A USCDI Data Element is a piece of data defined in USCDI for access, exchange or use of electronic health information.  

USCDI ONC New Data Element & Class (ONDEC) Submission System

USCDI V1

Please reference the USCDI version 1 document to the left for applicable standards versions associated with USCDI v1.

Harmful or undesired physiological responses associated with exposure to a substance.

Health professional’s conclusions and working assumptions that will guide treatment of the patient.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Desired state to be achieved by a patient.

Health related matter that is of interest, importance, or worry to someone who may be the patient, patient’s family or patient’s health care provider.

Record of vaccine administration.

Analysis of clinical specimens to obtain information about the health of a patient.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

Representing a patient’s smoking behavior.

USCDI V2

The USCDI v2 contains data classes and elements from USCDI v1 and new data classes and elements submitted through the ONDEC system. Please reference the USCDI Version 2 document to the left for applicable vocabulary standards versions associated with USCDI v2 and to the ONC Standards Bulletin 21-3 for more information about the process to develop USCDI v2 and future versions.

Harmful or undesired physiological responses associated with exposure to a substance.

Health professional’s conclusions and working assumptions that will guide treatment of the patient.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Non-imaging and non-laboratory tests performed that result in structured or unstructured findings specific to the patient to facilitate the diagnosis and management of conditions.

Tests that result in visual images requiring interpretation by a credentialed professional.

Information related to interactions between healthcare providers and a patient.

Desired state to be achieved by a patient.

Health related matter that is of interest, importance, or worry to someone who may be the patient, patient’s family or patient’s health care provider.

Record of vaccine administration.

Analysis of clinical specimens to obtain information about the health of a patient.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

Representing a patient’s smoking behavior.

USCDI V3

Please read the USCDI v3 standard document and the ONC Standards Bulletin 22-2 for details. Consistent with EO 14168 and OPM guidance, ASTP/ONC is exercising enforcement and issuing certification guidance for the ONC Health IT Certification Program with respect to certain data elements in USCDI v3. For more information see https://www.healthit.gov/topic/uscdi-v3-data-elements-enforcement-discretion.

Harmful or undesired physiological responses associated with exposure to a substance.

Health professional’s conclusions and working assumptions that will guide treatment of the patient.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Non-imaging and non-laboratory tests performed that result in structured or unstructured findings specific to the patient to facilitate the diagnosis and management of conditions.

Tests that result in visual images requiring interpretation by a credentialed professional.

Information related to interactions between healthcare providers and a patient.

Desired state to be achieved by a patient.

Assessments of a health-related matter of interest, importance, or worry to a patient, patient’s family, or patient’s healthcare provider that could identify a need, problem, or condition.

Record of vaccine administration.

Analysis of clinical specimens to obtain information about the health of a patient.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

USCDI V3.1

Please read the USCDI v3.1 standard document and the ONC Standards Bulletin 22-2 for details. USCDI version 3.1 updates USCDI version 3 with the following changes: consistent with Executive Order 14168, the Sex, Sexual Orientation, and Gender Identity data elements have been removed or updated in the Patient Demographics/Information Data Class.

Harmful or undesired physiological responses associated with exposure to a substance.

Health professional’s conclusions and working assumptions that will guide treatment of the patient.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Non-imaging and non-laboratory tests performed that result in structured or unstructured findings specific to the patient to facilitate the diagnosis and management of conditions.

Tests that result in visual images requiring interpretation by a credentialed professional.

Information related to interactions between healthcare providers and a patient.

Desired state to be achieved by a patient.

Assessments of a health-related matter of interest, importance, or worry to a patient, patient’s family, or patient’s healthcare provider that could identify a need, problem, or condition.

Record of vaccine administration.

Analysis of clinical specimens to obtain information about the health of a patient.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

USCDI V4

USCDI v4 added 20 data elements and one data class to USCDI v3. Please reference the USCDI v4 standard document and the ONC Standards Bulletin 23-2 for details. To review the prioritization criteria ONC used to select the USCDI v4 data elements, refer to the ONC Standards Bulletin 22-2.

Harmful or undesired physiological responses associated with exposure to a substance.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Non-imaging and non-laboratory tests performed that result in structured or unstructured findings specific to the patient to facilitate the diagnosis and management of conditions.

Tests that result in visual images requiring interpretation by a credentialed professional.

Information related to interactions between healthcare providers and a patient.

Physical place of available services or resources.

Desired state to be achieved by a person or a person’s elections to guide care.

Assessments of a health-related matter of interest, importance, or worry to a patient, patient’s family, or patient’s healthcare provider that could identify a need, problem, or condition.

Record of vaccine administration.

An instrument, machine, appliance, implant, software or other article intended to be used for a medical purpose.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Information that guides treatment of the patient and recommendations for future treatment.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

USCDI V5

USCDI v5 was published on July 16, 2024, and includes 16 new data elements and two new data classes. Please read the USCDI v5 standard document and the ONC Standards Bulletin 24-2 for details.

Harmful or undesired physiological responses associated with exposure to a substance.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Non-imaging and non-laboratory tests performed that result in structured or unstructured findings specific to the patient to facilitate the diagnosis and management of conditions.

Tests that result in visual images requiring interpretation by a credentialed professional.

Information related to interactions between healthcare providers and a patient.

Physical place of available services or resources.

Desired state to be achieved by a person or a person’s elections to guide care.

Assessments of a health-related matter of interest, importance, or worry to a patient, patient’s family, or patient’s healthcare provider that could identify a need, problem, or condition.

Record of vaccine administration.

An instrument, machine, appliance, implant, software or other article intended to be used for a medical purpose.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Findings or other clinical data collected about a patient during care.

Provider-authored request for the delivery of patient care services.

 Usage notes: Orders convey a provider’s intent to have a service performed on or for a patient, or to give instructions on future care.

Information that guides treatment of the patient and recommendations for future treatment.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

USCDI V6

ASTP/ONC published USCDI v6 on July 24, 2025, which includes 6 new data elements. Please read the USCDI v6 Standard Document and the ASTP/ONC Standards Bulletin 25-2 for details. ASTP/ONC welcomes input on future versions during the USCDI feedback period, open through September 29, 2025, at 11:59 PM ET. During this time, ASTP/ONC is accepting new data element submissions through ONDEC, and comments on existing data elements may be entered via the updated commenting feature on the USCDI data element pages.

Harmful or undesired physiological responses associated with exposure to a substance.

Information that guides treatment of the patient and recommendations for future treatment.

Information about a person who participates or is expected to participate in the care of a patient.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Non-imaging and non-laboratory tests performed that result in structured or unstructured findings specific to the patient to facilitate the diagnosis and management of conditions.

Tests that result in visual images requiring interpretation by a credentialed professional.

Information related to interactions between healthcare providers and a patient.

Physical place of available services or resources.

Family member health condition(s) that are relevant to a patient's care.

Assessments of a health-related matter of interest, importance, or worry to a patient, patient’s family, or patient’s healthcare provider that could identify a need, problem, or condition.

Record of vaccine administration.

An instrument, machine, appliance, implant, software or other article intended to be used for a medical purpose.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Provider-authored request for the delivery of patient care services.

 Usage notes: Orders convey a provider’s intent to have a service performed on or for a patient, or to give instructions on future care.

Condition, diagnosis, or reason for seeking medical attention.

Activity performed for or on a patient as part of the provision of care.

The metadata, or extra information about data, regarding who created the data and when it was created.

Level 2 data elements meet the following criteria:
  • Represented by a terminology standard or SDO-balloted technical specification or implementation guide.
  • Data element is captured, stored, or accessed in multiple production EHRs or other HIT modules from more than one developer.
  • Data element is electronically exchanged between more than two production EHRs or other HIT modules of different developers using available interoperability standards.
  • Use cases apply to most care settings or specialties.

Level 2

Harmful or undesired physiological responses associated with exposure to a substance.

Material substance originating from a biological entity intended to be transplanted or infused into another (possibly the same) biological entity.

Tests that result in visual images requiring interpretation by a credentialed professional.

Data related to an individual’s insurance coverage for health care.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

Provider-authored request for the delivery of patient care services.

 Usage notes: Orders convey a provider’s intent to have a service performed on or for a patient, or to give instructions on future care.

Data used to categorize individuals for identification, records matching, and other purposes.

Activity performed for or on a patient as part of the provision of care.

Physiologic measurements of a patient that indicate the status of the body’s life sustaining functions.

Level 1 data elements meet the following criteria:
  • Represented by a terminology standard or SDO-balloted technical specification or implementation guide.
  • Data element is captured, stored, or accessed in at least one production EHR or HIT module.
  • Data element is electronically exchanged between two production EHRs or other HIT modules using available interoperability standards.
  • Use cases apply to several care settings or specialties.

Level 1

Material substance originating from a biological entity intended to be transplanted or infused into another (possibly the same) biological entity.

Narrative patient data relevant to the context identified by note types.

  •  
  • Usage note: Clinical Notes data elements are content exchange standard agnostic. They should not be interpreted or associated with the structured document templates that may share the same name. 

Physical place of available services or resources.

Assessments of a health-related matter of interest, importance, or worry to a patient, patient’s family, or patient’s healthcare provider that could identify a need, problem, or condition.

Analysis of clinical specimens to obtain information about the health of a patient.

Pharmacologic agents used in the diagnosis, cure, mitigation, treatment, or prevention of disease.

The metadata, or extra information about data, regarding who created the data and when it was created.

Physiologic measurements of a patient that indicate the status of the body’s life sustaining functions.

Level 0 data elements meet the following criteria:
  • Not represented by a terminology standard or SDO-balloted technical specification or implementation guide.
  • Data element is captured, stored, or accessed in limited settings such as a pilot or proof of concept demonstration.
  • Data element is electronically exchanged in limited environments, such as connectathons or pilots.
  • Use cases apply to a limited number of care settings or specialties, or data element represents a specialization of other, more general data elements.

Level 0

Harmful or undesired physiological responses associated with exposure to a substance.

Material substance originating from a biological entity intended to be transplanted or infused into another (possibly the same) biological entity.

Information about a person who participates or is expected to participate in the care of a patient.

Tests that result in visual images requiring interpretation by a credentialed professional.

Desired state to be achieved by a patient.

Desired state to be achieved by a person or a person’s elections to guide care.

Data related to an individual’s insurance coverage for health care.

Findings or other clinical data collected about a patient during care.

Provider-authored request for the delivery of patient care services.

 Usage notes: Orders convey a provider’s intent to have a service performed on or for a patient, or to give instructions on future care.

Information that guides treatment of the patient and recommendations for future treatment.

Condition, diagnosis, or reason for seeking medical attention.

Physiologic measurements of a patient that indicate the status of the body’s life sustaining functions.

 

All USCDI Versions

The USCDI ONC New Data Element and Class (ONDEC) Submission System supports a predictable, transparent, and collaborative process, allowing health IT stakeholders to submit new data elements and classes for future versions of USCDI. Click here for more information and to submit new data elements.

The USCDI standard will follow the Standards Version Advancement Process described in the Cures rule to allow health IT developers to update their systems to newer version of USCDI and provide these updates to their customers.

Comment

Washington State Health Care Authority comments on Draft USCDIv3

The Washington State Health Care Authority (HCA) offers comments on the Draft third version of the United States Core Data for Interoperability (USCDIv3) published by the Office of the National Coordinator for Health IT (ONC).  Our comments are reflected in the attached document and address:

  1. Data Class: Health Insurance Coverage:
    1. Data Element: Coverage Type
  2. Data Class: Clinical Notes:
    1. Data Element: Discharge Summary Note
    2. Data Element: Progress Note
  3. Data Class: Health Status
    1. Data Element: Pregnancy Status
    2. Data Elements:
      1. Disability Status
      2. Mental Function (which includes the more specific Cognitive Status), and
      3. Functional Status

We thank ONC for its consideration of our comments. 

HCA Comments on USCDIv3.pdf

APTA Comments on USCDI v3

On behalf of the American Physical Therapy Association, we submit the attached comment on USCDI version 3 for consideration.

APTA Comments on USCDI Version 3_0.pdf

American College of Physicians Comments on Draft USCDI v3

On behalf of the American College of Physicians, thank you for this opportunity to submit comments on ONC’s Draft USCDI v3. The College appreciates ONC’s efforts to include social determinants of health (SDOH)-related data elements that focus on promoting equity, reducing disparities, and promoting public health data interoperability to improve care and address inequalities in the health care system. ACP strongly believes that physicians’ awareness of SDOH information improves whole person, patient-centric care and lowers long-term costs, while also believing the burden of collecting data must not outweigh the clinical benefit of the data for successful implementation and use of the proposed new data elements. The College appreciates the opportunity to offer feedback and looks forward to continuing to work with ONC to implement policies that support and improve the practice of internal medicine.

ACP Comments on Draft USCDI v3 - Final.pdf

USCDI v3 from Texas Medical Association

The Texas Medical Association appreciates the opportunity to submit the attached comments for consideration. 

TMA Comments ONC USCDI v3 042722.pdf

USCDI Version 3 Comments

On behalf of the American Immunization Registry Association (AIRA) we are pleased to submit comments on the Office of the National Coordinator’s (ONC’s) recently released documents related to United States Core Data for Interoperability, Version 3. These comments are a compilation of the input of our members which include over 80 organizations representing Public Health Immunization Information Systems (IIS), IIS implementers and vendors, non-profit organizations and partners. Immunization Information Systems interface with a broad range of stakeholders, including providers, pharmacists, schools, child care facilities, health plans and payers, among others.

AIRA provides suggestions on the ONC draft USCDI Version 3 in our comments attached, organized by the specific questions asked by
ONC in the draft USCDI version 3. Please feel free to contact me with any questions: mbkurilo@immregistries.org.

Thank you for all you do to support interoperability,

Mary Beth Kurilo, MPH, MSW, Senior Director for Health Informatics

USCDI V3 Comments from AIRA Membership.pdf

The Medical Imaging &…

The Medical Imaging & Technology Alliance (MITA) is the leading trade association representing the manufacturers of medical imaging equipment and radiopharmaceuticals. We are encouraged to see the Office of the National Coordinator for Health Information Technology (ONC) continue its work to improve USCDI and enhance interoperability in healthcare—a goal MITA members share. We submit these comments in support of that shared goal.

MITA-Comments-USCDIv3-20220421-FINAL.pdf

FMCNA Comment on USCDI Draft Version 3

Fresenius Medical Care North America (FMCNA) welcomes the opportunity to comment on USCDI Draft version 3.  We note there is also a statement of support appended to our letter from eHealth Exchange, the nation’s largest Health Information Network.

FMCNA Comment on USCDI V3.pdf

Cerner Corporation USCDI Draft V3 Comments

Cerner Corporation appreciates the opportunity to provide our comments and recommendations on the USCDI Draft V3. Please find our full comment letter attached.

Cerner Corporation Draft USCDI V3 Comment Letter.pdf

Comments for 2022 USCDI V3

Thank you for the opportunity to comment. Quest Diagnostics, Incorporated submits comments in the attached .pdf file. 

2022 USCDI V3 QD Question Comments Final.pdf

AHIMA Comments on Draft USCDI Version 3

Thank you for the opportunity to submit comments regarding ONC’s request for comment on the United States Core Data for Interoperability (USCDI) Version 3 (January 2022).

 

AHIMA is a global nonprofit association of health information (HI) professionals. AHIMA represents professionals who work with health data for more than one billion patient visits each year. The AHIMA mission of empowering people to impact health drives our members and credentialed HI professionals to ensure that health information is accurate, complete, and available to patients and clinicians. Our leaders work at the intersection of healthcare, technology, and business, and are found in data integrity and information privacy job functions worldwide.

 

AHIMA appreciates ONC’s continued work to develop and implement robust data standards to be used across all of health information technology. The USCDI is a roadmap to moving to a more interoperable and open patient centered health system. Version 3 of the USCDI continues to build on the foundation laid by both Versions 1 and 2 by pushing the adoption of data standards further down the maturity pathway. Version 3 proposes several new data classes and elements, actions AHIMA has previously provided comment on and will continue to support now and into the future.

 

AHIMA offers general comments on specific elements and classes followed by more detailed comments in response to certain questions contained within Standards Bulletin 2021-3 in our attached comment letter.

Final AHIMA USCDI v3 Comment Letter.pdf

Add a New Comment

Review comment and Submit

Edit
Comment #1