What is the Medical Glossary?

Browse our complete A-Z glossary of medical terms, drugs, conditions, procedures, hospitals, and healthcare organizations.

What healthcare terms are defined in the MedicalRecords.com glossary?

The MedicalRecords.com glossary covers medical records terminology, healthcare IT acronyms, insurance terms, clinical vocabulary, regulatory terms (HIPAA, HITECH), and EHR/EMR industry definitions. It is designed for patients, healthcare professionals, and technology buyers seeking clear explanations.

What does EMR stand for in healthcare?

EMR stands for Electronic Medical Record. It is a digital version of the paper charts kept in a clinician's office, containing a patient's medical and treatment history from a single practice. Unlike EHRs (Electronic Health Records), EMRs are not typically designed to share information outside the practice.

What is HIPAA and why does it matter for medical records?

HIPAA (Health Insurance Portability and Accountability Act) is a federal law that establishes standards to protect sensitive patient health information. Under HIPAA, patients have the right to access and obtain copies of their medical records, and covered entities must respond to records requests within 30 days.

What is the difference between an EHR and an EMR?

An EMR (Electronic Medical Record) is a digital record used within a single practice. An EHR (Electronic Health Record) is designed to be shared across multiple healthcare settings — different physicians, hospitals, labs, and specialists — giving a broader view of a patient's care history.

Medical Glossary | A-Z Entity Directory

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U.S. Drug Mart, Inc. Data Breach (2023)

Event

U.S. Drug Mart, Inc. data breach in TX affecting 13,016 individuals. Reported 2023-11-21.

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U.S. HEALTHWORKS-SMMPP, L.C. Data Breach (2025)

Event

U.S. HEALTHWORKS-SMMPP, L.C. data breach in AZ affecting 10,673 individuals. Reported 2025-02-06.

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UC San Diego Health Data Breach (2023)

Event

UC San Diego Health data breach in CA affecting 23,000 individuals. Reported 2023-03-16.

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UHS of Delaware, Inc. Data Breach (2023)

Event

UHS of Delaware, Inc. data breach in PA affecting 40,290 individuals. Reported 2023-03-29.

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UI Community Home Care, a subsidiary of University of Iowa Health System Data Breach (2023)

Event

UI Community Home Care, a subsidiary of University of Iowa Health System data breach in IA affecting 67,897 individuals. Reported 2023-05-24.

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UNITE HERE Data Breach (2024)

Event

UNITE HERE data breach in NY affecting 95,797 individuals. Reported 2024-02-23.

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UNITED BACKCARE PS dba Pacific Rehabilitation Centers Data Breach (2025)

Event

UNITED BACKCARE PS dba Pacific Rehabilitation Centers data breach in WA affecting 18,900 individuals. Reported 2025-02-11.

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US Radiology Specialists, Inc. Data Breach (2022)

Event

US Radiology Specialists, Inc. data breach in NC affecting 87,552 individuals. Reported 2022-02-18.

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UT Southwestern Medical Center Data Breach (2023)

Event

UT Southwestern Medical Center data breach in TX affecting 98,437 individuals. Reported 2023-07-24.

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Uintah Basin Healthcare Data Breach (2023)

Event

Uintah Basin Healthcare data breach in UT affecting 103,974 individuals. Reported 2023-05-10.

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United Healthcare Services, Inc. Single Affiliated Covered Entity Data Breach (2023)

Event

United Healthcare Services, Inc. Single Affiliated Covered Entity data breach in CT affecting 315,915 individuals. Reported 2023-09-07.

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United Regional Health Care System Data Breach (2024)

Event

United Regional Health Care System data breach in TX affecting 36,900 individuals. Reported 2024-01-26.

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United Seating and Mobility, L.L.C., d/b/a Numotion Data Breach (2024)

Event

United Seating and Mobility, L.L.C., d/b/a Numotion data breach in TN affecting 602,265 individuals. Reported 2024-05-01.

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United Steelworkers Local 286 Data Breach (2023)

Event

United Steelworkers Local 286 data breach in PA affecting 37,965 individuals. Reported 2023-04-14.

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United of Omaha Life Insurance Company Data Breach (2024)

Event

United of Omaha Life Insurance Company data breach in NE affecting 107,894 individuals. Reported 2024-07-26.

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University Diagnostic Medical Imaging, PC Data Breach (2025)

Event

University Diagnostic Medical Imaging, PC data breach in NY affecting 138,080 individuals. Reported 2025-01-21.

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University Urology Data Breach (2023)

Event

University Urology data breach in NY affecting 56,816 individuals. Reported 2023-05-01.

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University of Colorado Hospital Authority Data Breach (2023)

Event

University of Colorado Hospital Authority data breach in CO affecting 48,879 individuals. Reported 2023-01-17.

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University of Iowa Community Home Care Data Breach (2025)

Event

University of Iowa Community Home Care data breach in IA affecting 109,029 individuals. Reported 2025-08-29.

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University of Iowa Health Care Data Breach (2025)

Event

University of Iowa Health Care data breach in IA affecting 101,875 individuals. Reported 2025-08-29.

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University of Michigan, on behalf of certain HIPAA-covered functions of the University that operate as a HIPAA hybrid entity Data Breach (2023)

Event

University of Michigan, on behalf of certain HIPAA-covered functions of the University that operate as a HIPAA hybrid entity data breach in MI affecting 61,033 individuals. Reported 2023-10-23.

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University of Michigan/Michigan Medicine Data Breach (2022)

Event

University of Michigan/Michigan Medicine data breach in MI affecting 33,857 individuals. Reported 2022-10-25.

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University of Michigan/Michigan Medicine Data Breach (2024)

Event

University of Michigan/Michigan Medicine data breach in MI affecting 57,891 individuals. Reported 2024-09-26.

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Unum Group SACE Data Breach (2023)

Event

Unum Group SACE data breach in TN affecting 531,732 individuals. Reported 2023-08-03.

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Upstream RollCo, LLC Data Breach (2023)

Event

Upstream RollCo, LLC data breach in AL affecting 748,678 individuals. Reported 2023-04-22.

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Urology of Greater Atlanta, LLC Data Breach (2022)

Event

Urology of Greater Atlanta, LLC data breach in GA affecting 79,795 individuals. Reported 2022-10-07.

Medical Glossary

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U.S. Drug Mart, Inc. Data Breach (2023)

U.S. HEALTHWORKS-SMMPP, L.C. Data Breach (2025)

UC San Diego Health Data Breach (2023)

UHS of Delaware, Inc. Data Breach (2023)

UI Community Home Care, a subsidiary of University of Iowa Health System Data Breach (2023)

UNITE HERE Data Breach (2024)

UNITED BACKCARE PS dba Pacific Rehabilitation Centers Data Breach (2025)

US Radiology Specialists, Inc. Data Breach (2022)

UT Southwestern Medical Center Data Breach (2023)

Uintah Basin Healthcare Data Breach (2023)

United Healthcare Services, Inc. Single Affiliated Covered Entity Data Breach (2023)

United Regional Health Care System Data Breach (2024)

United Seating and Mobility, L.L.C., d/b/a Numotion Data Breach (2024)

United Steelworkers Local 286 Data Breach (2023)

United of Omaha Life Insurance Company Data Breach (2024)

University Diagnostic Medical Imaging, PC Data Breach (2025)

University Urology Data Breach (2023)

University of Colorado Hospital Authority Data Breach (2023)

University of Iowa Community Home Care Data Breach (2025)

University of Iowa Health Care Data Breach (2025)

University of Michigan, on behalf of certain HIPAA-covered functions of the University that operate as a HIPAA hybrid entity Data Breach (2023)

University of Michigan/Michigan Medicine Data Breach (2022)

University of Michigan/Michigan Medicine Data Breach (2024)

Unum Group SACE Data Breach (2023)

Upstream RollCo, LLC Data Breach (2023)

Urology of Greater Atlanta, LLC Data Breach (2022)