| Version 4.0.0 | Current Build | Difference | Notes | 
| CodeSystems | 
| US Core CarePlan Category Extension Codes | US Core CarePlan Category Extension Codes | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
| US Core Condition Category Extension Codes | US Core Condition Category Extension Codes | Comparison | 1 Breaking Change, 0 Changes, 5 Notes | 
|  | US Core Category | Added |  | 
| US Core DocumentReferences Category Codes | US Core DocumentReferences Category Codes | Comparison | 1 Breaking Change, 0 Changes, 2 Notes | 
| US Core Provenance Participant Type Extension Codes | US Core Provenance Participant Type Extension Codes | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
| Race & Ethnicity - CDC |  | Removed |  | 
| ValueSets | 
| SNOMED CT Clinical Findings | US Core Goal Codes | Comparison | 2 Breaking Changes, 0 Changes, 2010 Notes | 
| Condition/Problem/Diagnosis Codes | US Core Condition Codes | Comparison | 2 Breaking Changes, 0 Changes, 14 Notes | 
| Discharge disposition | US Core Discharge Disposition | Comparison | 2 Breaking Changes, 0 Changes, 9 Notes | 
| NarrativeStatus | US Core Narrative Status | Comparison | 2 Breaking Changes, 2 Changes, 12 Notes | 
| LOINC Codes | US Core Laboratory Test Codes | Comparison | 2 Breaking Changes, 0 Changes, 1257 Notes | 
| Birth Sex | Birth Sex | Comparison | 1 Breaking Change, 1 Change, 9 Notes | 
| Detailed ethnicity | Detailed ethnicity | Comparison | 1 Breaking Change, 0 Changes, 12 Notes | 
| Detailed Race | Detailed Race | Comparison | 1 Breaking Change, 1 Change, 17 Notes | 
| OMB Ethnicity Categories | OMB Ethnicity Categories | Comparison | 1 Breaking Change, 1 Change, 9 Notes | 
| OMB Race Categories | OMB Race Categories | Comparison | 1 Breaking Change, 2 Changes, 9 Notes | 
| Language codes with language and optionally a region modifier | Language codes with language and optionally a region modifier | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
|  | US Core Simple Observation Codes | Added |  | 
| US Core Clinical Note Type | US Core Clinical Note Type | Comparison | 1 Breaking Change, 0 Changes, 8 Notes | 
|  | US Core Clinical Result Observation Category | Added |  | 
| US Core Condition Category Codes | Condition Category Codes | Comparison | 2 Breaking Changes, 0 Changes, 15 Notes | 
| US Core Condition Category Codes |  | Removed |  | 
| US Core Condition Code | US Core Condition Codes | Comparison | 1 Breaking Change, 0 Changes, 8 Notes | 
| US Core DiagnosticReport Category | Diagnostic Service Section Codes | Comparison | 2 Breaking Changes, 0 Changes, 60 Notes | 
| US Core DiagnosticReport Category | US Core Diagnostic Report Category Codes | Comparison | 1 Breaking Change, 0 Changes, 4 Notes | 
| US Core Diagnostic Report Laboratory Codes |  | Removed |  | 
| US Core Diagnostic Report Laboratory Codes | US Core Laboratory Test Codes | Comparison | 2 Breaking Changes, 0 Changes, 6 Notes | 
| US Core DiagnosticReport Report And Note Codes | US Core Non Laboratory Codes | Comparison | 1 Breaking Change, 0 Changes, 1148 Notes | 
|  | US Core Discharge Disposition | Added |  | 
| US Core DocumentReference Category | Document Class Value Set | Comparison | 2 Breaking Changes, 0 Changes, 99 Notes | 
| US Core DocumentReference Category | US Core DocumentReference Category | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
| US Core DocumentReference Type | US Core DocumentReference Type | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
| US Core Encounter Type | US Core Encounter Type | Comparison | 1 Breaking Change, 0 Changes, 5 Notes | 
|  | US Core Goal Codes | Added |  | 
|  | US Core Laboratory Test Codes | Added |  | 
| US Core Narrative Status | US Core Narrative Status | Comparison | 1 Breaking Change, 0 Changes, 4 Notes | 
| US Core Status for Smoking Status Observation | US Core Status for Smoking Status Observation | Comparison | 1 Breaking Change, 0 Changes, 5 Notes | 
| US Core Smoking Status Max-Binding | US Core Smoking Status Max-Binding | Comparison | 1 Breaking Change, 0 Changes, 4 Notes | 
| US Core Observation Value Codes (SNOMED-CT) | US Core Observation Value Codes (SNOMED-CT) | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
|  | US Core Pregnancy Intent Codes | Added |  | 
|  | US Core Pregnancy Status Codes | Added |  | 
|  | US Core Problem or Health Concern | Added |  | 
| US Core Procedure Codes | US Core Procedure Codes | Comparison | 1 Breaking Change, 0 Changes, 8 Notes | 
| US Core Provenance Participant Type Codes | US Core Provenance Participant Type Codes | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
| US Core Provider Role (NUCC) | Care Team Member Function | Comparison | 2 Breaking Changes, 0 Changes, 1471 Notes | 
| US Core Provider Role (NUCC) |  | Removed |  | 
|  | US Core Screening Assessment Condition Category | Added |  | 
|  | US Core Screening Assessment Observation Category | Added |  | 
|  | US Core ServiceRequest Category Codes | Added |  | 
|  | US Core Sexual Orientation | Added |  | 
|  | US Core Simple Observation Category | Added |  | 
| US Core Smoking Status Observation Codes | US Core Smoking Status Observation Codes | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
|  | US Core Survey Codes | Added |  | 
| USPS Two Letter Alphabetic Codes | USPS Two Letter Alphabetic Codes | Comparison | 1 Breaking Change, 0 Changes, 3 Notes | 
| US Core Vital Signs ValueSet | US Core Vital Signs ValueSet | Comparison | 1 Breaking Change, 0 Changes, 8 Notes | 
| StructureDefinitions | 
| SimpleQuantity | SimpleQuantity | Comparison | 0 Breaking Changes, 0 Changes, 0 Notes | 
| US Core Pediatric Head Occipital-frontal Circumference Percentile Profile | US Core Pediatric Head Occipital Frontal Circumference Percentile Profile | Comparison | 1 Breaking Change, 14 Changes, 3 Notes | 
| US Core Pediatric BMI for Age Observation Profile | US Core Pediatric BMI for Age Observation Profile | Comparison | 1 Breaking Change, 13 Changes, 2 Notes | 
| US Core Pediatric Weight for Height Observation Profile | US Core Pediatric Weight for Height Observation Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core AllergyIntolerance Profile | US Core AllergyIntolerance Profile | Comparison | 1 Breaking Change, 8 Changes, 3 Notes | 
| US Core Birth Sex Extension | US Core Birth Sex Extension | Comparison | 1 Breaking Change, 1 Change, 1 Note | 
| US Core Blood Pressure Profile | US Core Blood Pressure Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core BMI Profile | US Core BMI Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core Body Height Profile | US Core Body Height Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core Body Temperature Profile | US Core Body Temperature Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core Body Weight Profile | US Core Body Weight Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core CarePlan Profile | US Core CarePlan Profile | Comparison | 1 Breaking Change, 10 Changes, 4 Notes | 
| US Core CareTeam Profile | US Core CareTeam Profile | Comparison | 1 Breaking Change, 6 Changes, 3 Notes | 
|  | US Core Condition Encounter Diagnosis Profile | Added |  | 
|  | US Core Condition Problems and Health Concerns Profile | Added |  | 
| US Core Condition Profile | US Core Condition Problems and Health Concerns Profile | Comparison | 2 Breaking Changes, 14 Changes, 5 Notes | 
| US Core Condition Profile |  | Removed |  | 
|  | US Core Coverage Profile | Added |  | 
| US Core DiagnosticReport Profile for Laboratory Results Reporting | US Core DiagnosticReport Profile for Laboratory Results Reporting | Comparison | 1 Breaking Change, 10 Changes, 5 Notes | 
| US Core DiagnosticReport Profile for Report and Note exchange | US Core DiagnosticReport Profile for Report and Note Exchange | Comparison | 1 Breaking Change, 20 Changes, 5 Notes | 
| US Core Direct email Extension | US Core Direct email Extension | Comparison | 1 Breaking Change, 1 Change, 3 Notes | 
| US Core DocumentReference Profile | US Core DocumentReference Profile | Comparison | 1 Breaking Change, 19 Changes, 4 Notes | 
| US Core Encounter Profile | US Core Encounter Profile | Comparison | 1 Breaking Change, 21 Changes, 5 Notes | 
| US Core Ethnicity Extension | US Core Ethnicity Extension | Comparison | 1 Breaking Change, 0 Changes, 1 Note | 
|  | US Core Extension Questionnaire URI | Added |  | 
|  | US Core Gender Identity Extension | Added |  | 
| US Core Goal Profile | US Core Goal Profile | Comparison | 1 Breaking Change, 10 Changes, 3 Notes | 
| US Core Head Circumference Profile | US Core Head Circumference Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core Heart Rate Profile | US Core Heart Rate Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
| US Core Immunization Profile | US Core Immunization Profile | Comparison | 1 Breaking Change, 9 Changes, 4 Notes | 
| US Core Implantable Device Profile | US Core Implantable Device Profile | Comparison | 1 Breaking Change, 12 Changes, 3 Notes | 
|  | US Core Jurisdiction Extension | Added |  | 
| US Core Location Profile | US Core Location Profile | Comparison | 1 Breaking Change, 1 Change, 3 Notes | 
|  | US Core MedicationDispense Profile | Added |  | 
| US Core MedicationRequest Profile | US Core MedicationRequest Profile | Comparison | 1 Breaking Change, 27 Changes, 3 Notes | 
| US Core Medication Profile | US Core Medication Profile | Comparison | 1 Breaking Change, 2 Changes, 2 Notes | 
|  | US Core Observation Clinical Result Profile | Added |  | 
| US Core Laboratory Result Observation Profile | US Core Laboratory Result Observation Profile | Comparison | 2 Breaking Changes, 16 Changes, 3 Notes | 
|  | US Core Observation Occupation Profile | Added |  | 
|  | US Core Observation Pregnancy Intent Profile | Added |  | 
|  | US Core Observation Pregnancy Status Profile | Added |  | 
|  | US Core Observation Screening Assessment Profile | Added |  | 
|  | US Core Observation Sexual Orientation Profile | Added |  | 
| US Core Organization Profile | US Core Organization Profile | Comparison | 1 Breaking Change, 1 Change, 3 Notes | 
| US Core Patient Profile | US Core Patient Profile | Comparison | 1 Breaking Change, 27 Changes, 3 Notes | 
| US Core PractitionerRole Profile | US Core PractitionerRole Profile | Comparison | 1 Breaking Change, 3 Changes, 3 Notes | 
| US Core Practitioner Profile | US Core Practitioner Profile | Comparison | 1 Breaking Change, 14 Changes, 4 Notes | 
| US Core Procedure Profile | US Core Procedure Profile | Comparison | 1 Breaking Change, 6 Changes, 4 Notes | 
| US Core Provenance Profile | US Core Provenance Profile | Comparison | 2 Breaking Changes, 9 Changes, 4 Notes | 
| US Core Pulse Oximetry Profile | US Core Pulse Oximetry Profile | Comparison | 1 Breaking Change, 14 Changes, 3 Notes | 
|  | US Core QuestionnaireResponse Profile | Added |  | 
| US Core Race Extension | US Core Race Extension | Comparison | 1 Breaking Change, 0 Changes, 1 Note | 
|  | US Core RelatedPerson Profile | Added |  | 
| US Core Respiratory Rate Profile | US Core Respiratory Rate Profile | Comparison | 1 Breaking Change, 13 Changes, 3 Notes | 
|  | US Core ServiceRequest Profile | Added |  | 
|  | US Core Simple Observation Profile | Added |  | 
| US Core Smoking Status Observation Profile | US Core Smoking Status Observation Profile | Comparison | 1 Breaking Change, 8 Changes, 3 Notes | 
|  | US Core Specimen Profile | Added |  | 
|  | US Core Tribal Affiliation Extension | Added |  | 
| US Core Vital Signs Profile | US Core Vital Signs Profile | Comparison | 1 Breaking Change, 13 Changes, 2 Notes | 
|  | US Core USCDI Requirement Extension | Added |  | 
| CapabilityStatements | 
|  | US Core Client CapabilityStatement | Added |  | 
|  | US Core Server CapabilityStatement | Added |  |