| CDxmore than one meaning | Companion Diagnostic | IVD that identifies patients who will benefit from a specific drug. |
| CLIA | Clinical Laboratory Improvement Amendments | U.S. federal standards that govern clinical laboratory testing. |
| CRM | Cardiac Rhythm Management | Implantable and external devices that monitor and treat cardiac arrhythmias, pacemakers, ICDs, CRT devices, and insertable cardiac monitors. |
| DTxmore than one meaning | Digital Therapeutic | Software-based intervention that delivers evidence-based therapy to prevent, manage, or treat a disease. |
| DTxmore than one meaning | Digital Therapeutics | Software-based interventions that prevent, manage, or treat disease. |
| EP | Electrophysiology | Diagnosis and catheter-based treatment of cardiac arrhythmias. |
| IVDmore than one meaning | In Vitro Diagnostics (Segment) | Tests performed on biological samples outside the body to inform diagnosis or treatment. |
| IVDmore than one meaning | In Vitro Diagnostics | Tests performed on biological samples outside the body. |
| LDT | Laboratory-Developed Test | IVD designed, manufactured, and used within a single CLIA laboratory. |
| POC | Point-of-Care Diagnostics | Diagnostic tests performed near the patient, outside a central lab. |
| RPMmore than one meaning | Wearables and Remote Patient Monitoring | Connected devices that capture physiologic data outside traditional clinical settings. |
| RPMmore than one meaning | Remote Patient Monitoring | Devices and services that capture patient data outside clinical settings. |
| SUD | Single-Use Device | A device the original manufacturer labels for one use or one patient, distinct from reusable devices and from FDA-regulated reprocessed SUDs. |