| Code | Display | Definition | Status | Status |
| aid | Application Implementation and Design | Application Implementation and Design (http://www.hl7.org/Special/committees/java/index.cfm). | | |
| arden | Arden Syntax | Arden Syntax (http://www.hl7.org/Special/committees/arden/index.cfm) | | |
| att | Clinical Attachments | Clinical Attachments Workgroup (inactive since mid-2018; work subsumed by Structured Documents and Financial Management). Retained for backwards-compatibility only. | | |
| brr | Biomedical Research and Regulation | Biomedical Research and Regulation (http://www.hl7.org/Special/committees/rcrim/index.cfm). | | |
| cbcc | Community Based Collaborative Care | Community Based Collaborative Care (http://www.hl7.org/Special/committees/cbcc/index.cfm). | | |
| cdamg | CDA Management Group | CDA Management Group (http://www.hl7.org/Special/committees/cdamg/index.cfm) | | |
| cds | Clinical Decision Support | Clinical Decision Support (http://www.hl7.org/Special/committees/dss/index.cfm). | | |
| cg | Clinical Genomics | Clinical Genomics (http://www.hl7.org/Special/committees/clingenomics/index.cfm). | | |
| cgp | Cross-Group Projects | Cross-Group Projects (http://www.hl7.org/Special/committees/cgp/index.cfm) | | |
| cic | Clinical Interoperability Council | Clinical Interoperability Council (http://www.hl7.org/Special/committees/cic/index.cfm). | | |
| cimi | Clinical Information Modeling Initiative | Clinical Information Modeling Initiative (http://www.hl7.org/Special/committees/cimi/index.cfm) | | |
| claims | Payer/Provider Information Exchange Work Group | Payer/Provider Information Exchange Work Group (http://www.hl7.org/Special/committees/claims/index.cfm) | | |
| cqi | Clinical Quality Information | Clinical Quality Information (http://www.hl7.org/Special/committees/cqi/index.cfm). | | |
| dev | Health Care Devices | Health Care Devices (http://www.hl7.org/Special/committees/healthcaredevices/index.cfm). | | |
| ehr | Electronic Health Records | Electronic Health Records (http://www.hl7.org/special/committees/ehr/index.cfm). | | |
| ec | Emergency Care | Emergency Care (http://www.hl7.org/Special/committees/emergencycare/index.cfm) | | |
| fhir | FHIR Infrastructure | FHIR Infrastructure (http://www.hl7.org/Special/committees/fiwg/index.cfm). | | |
| fmg | FHIR Management Group | FHIR Management Group (http://www.hl7.org/Special/committees/fhirmg/index.cfm) | | |
| fm | Financial Management | Financial Management (http://www.hl7.org/Special/committees/fm/index.cfm). | | |
| hsi | Health Standards Integration | Health Standards Integration (http://www.hl7.org/Special/committees/hsi/index.cfm). | | |
| hsswg | Human and Social Services | Human and Social Services (http://www.hl7.org/Special/committees/hsswg/index.cfm) | | |
| hta | Terminology Authority | Terminology Authority (http://www.hl7.org/Special/committees/termauth/index.cfm) | | |
| ictc | Conformance | Conformance (http://www.hl7.org/Special/committees/ictc/index.cfm) | | |
| ii | Imaging Integration | Imaging Integration (http://www.hl7.org/Special/committees/imagemgt/index.cfm). | | |
| inm | Infrastructure And Messaging | Infrastructure And Messaging (http://www.hl7.org/special/committees/inm/index.cfm). | | |
| its | Implementable Technology Specifications | Implementable Technology Specifications (http://www.hl7.org/special/committees/xml/index.cfm). | | |
| lhs | Learning Health Systems | Learning Health Systems (http://www.hl7.org/Special/committees/lhs/index.cfm) | | |
| mnm | Modeling and Methodology | Modeling and Methodology (http://www.hl7.org/Special/committees/mnm/index.cfm). | | |
| mobile | Mobile Health | Mobile Health (http://www.hl7.org/Special/committees/mobile/index.cfm) | | |
| oo | Orders and Observations | Orders and Observations (http://www.hl7.org/Special/committees/orders/index.cfm). | | |
| pa | Patient Administration | Patient Administration (http://www.hl7.org/Special/committees/pafm/index.cfm). | | |
| pc | Patient Care | Patient Care (http://www.hl7.org/Special/committees/patientcare/index.cfm). | | |
| pe | Patient Empowerment | Patient Empowerment (https://www.hl7.org/Special/committees/patientempowerment/index.cfm). | | |
| pher | Public Health and Emergency Response | Public Health and Emergency Response (http://www.hl7.org/Special/committees/pher/index.cfm). | | |
| phx | Pharmacy | Pharmacy (http://www.hl7.org/Special/committees/medication/index.cfm). | | |
| sd | Structured Documents | Structured Documents (http://www.hl7.org/Special/committees/structure/index.cfm). | | |
| sec | Security | Security (http://www.hl7.org/Special/committees/secure/index.cfm). | | |
| ti | Terminology Infrastructure | Terminology Infrastructure (http://www.hl7.org/Special/committees/Vocab/index.cfm) | retired, retired | retired, retired |
| tsmg | Terminology Services Management Group (TSMG) | Terminology Services Management Group (TSMG) (http://www.hl7.org/Special/committees/tsmg/index.cfm) | | |
| us | US Realm Steering Committee | US Realm Taskforce (http://www.hl7.org/Special/committees/usrealm/index.cfm). | | |
| v2 | V2 Management Group | V2 Management Group (http://www.hl7.org/Special/committees/v2management/index.cfm) | | |
| vocab | Terminology Infrastructure | Terminology Infrastructure (http://www.hl7.org/Special/committees/Vocab/index.cfm). | | |