By Eric Andrew Kristof, RN, CAHIMS | Healthcare IT Professional | HIMSS Arkansas Chapter Member
About This Series: The HIMSS Word of the Day is a running blog series drawing from the HIMSS Dictionary of Health Information and Technology Terms, Acronyms, and Organizations, 6th Edition (2025) — the authoritative reference for healthcare IT professionals and the primary study resource for CAHIMS and CPHIMS certification. Each post paraphrases the term in plain language, grounds it in real-world healthcare IT context, and adds a bedside nursing perspective you won’t find in a textbook.
📖 The Term: Electronic Health Record (EHR)
Source: HIMSS Dictionary of Health Information and Technology Terms, Acronyms, and Organizations, 6th Edition (2025)
🔍 Plain-Language Definition
An Electronic Health Record (EHR) is a patient’s health story kept in digital form across time and across care settings. It holds the core clinical facts: demographics, problems, medications, allergies, vital signs, history, immunizations, lab results, imaging reports, and clinicians’ notes. Beyond storage, it is designed to support the work of care itself, including ordering, decision support, quality measurement, and reporting.
The HIMSS Dictionary gives the term two senses, and the second is the one that matters most on exams. In the first sense, the EHR is a longitudinal record built from encounters anywhere care is delivered, one that streamlines clinician workflow. In the second, an EHR is defined by who can use it: health information that follows national interoperability standards so that authorized clinicians and staff in more than one healthcare organization can create, update, and view it.
That second sense is what separates an EHR from its close cousins:
| Record Type | Scope | Who Controls It | Built to Share? |
|---|---|---|---|
| EMR (Electronic Medical Record) | One organization’s digital chart | The provider organization | Not necessarily; often stays inside one practice or hospital |
| EHR (Electronic Health Record) | Longitudinal record across settings | Authorized clinicians and staff across organizations | Yes, through national interoperability standards |
| PHR (Personal Health Record) | The patient’s own compiled health information | The patient | At the patient’s discretion |
⚠️ Exam Alert: CAHIMS questions treat EHR and EMR as distinct terms even though the industry uses them interchangeably. The EMR is a single organization’s digital chart; the EHR is designed to be shared across organizations using standards. A PHR is controlled by the patient. Also know that Certified EHR Technology (CEHRT) means a product certified under the ONC Health IT Certification Program, which is a property of the software rather than of how a hospital uses it.
🌐 Why It Matters: Real-World Healthcare IT Context
The EHR is the platform on which almost every other health IT capability runs: CPOE, clinical decision support, the eMAR, the patient portal, quality reporting, and analytics.
Adoption is no longer the question. According to ONC, as of 2024, 91% of office-based physicians and more than 99% of non-federal acute care hospitals had adopted a certified EHR. Federal incentives under the HITECH Act and Meaningful Use drove most of that change in roughly a decade.
What adoption did not settle is whether the EHR delivers what it promised. A 2003 report from the Institute of Medicine (now the National Academy of Medicine) described eight core functions an EHR should provide:
- Health information and data
- Result management
- Order entry and management
- Decision support
- Electronic communication and connectivity
- Patient support
- Administrative processes
- Reporting and population health
Most EHRs now provide all eight on paper. The quality of each varies widely by product, configuration, and local governance.
Failure modes of EHR programs:
- Documentation burden and copy-forward notes that bury the clinically important details
- Usability problems that drive clinician burnout and after-hours charting
- Data locked inside one organization’s instance, which makes the “EHR” behave like an EMR
- Duplicate patient records that fragment the longitudinal view
- Build decisions made once at Go-Live and never revisited
Strengths of mature EHR programs:
- Structured, standards-based data that can be exchanged and reused for analytics
- Ongoing optimization teams with clinicians embedded in build decisions
- Active health information exchange so outside records arrive in the chart
- Role-based workflows and personalization that reduce clicks for high-volume tasks
- Governance that measures the EHR by outcomes and clinician experience, not just uptime
The EHR is infrastructure. Like any infrastructure, its value depends on how well it is maintained after the ribbon-cutting.
🏥 The Nurse’s Perspective: Clinical, Bedside, & Workflow
Nurses spend more of their shift inside the EHR than any other clinical role, which makes them its most experienced users and its most candid critics.
At the Bedside
At the bedside, the EHR is the flowsheet, the eMAR, the care plan, the intake and output totals, the wound photos, and the handoff report. A well-built EHR brings the right information to the nurse at the right moment: the allergy banner, the latest potassium, and the reason the evening dose was held.
A poorly built one turns every assessment into a hunt across tabs. The difference shows up in how much time nurses spend looking at the screen versus looking at the patient.
In Clinical Workflow
The second dictionary sense of the EHR, a record built to be shared across organizations, matters most to nurses at transitions of care. Admissions from outside facilities, transfers to skilled nursing, and discharges to home health all depend on information traveling with the patient. When it does, medication reconciliation takes minutes. When it does not, nurses rebuild the history from phone calls, faxes, and family memory.
Nursing documentation also feeds far more than the chart. Flowsheet entries become quality measures, staffing acuity scores, sepsis screening inputs, and research data. Structured nursing documentation is one of the richest data sources in the EHR, which is why nurses belong in every conversation about how it is designed.
In EHR Implementation (Go-Live Perspective)
An Epic Go-Live is an EHR implementation compressed into a single cutover weekend after months of build, testing, and training. Nurses experience it as a new set of screens, new workflows, new device integrations, and new alerts, all on the first shift.
End-user support analysts at the elbow see the EHR’s two senses collide in real time. Inside the building, the questions are about workflow: where a flowsheet row lives, how to release a held order, and why a task keeps reappearing. At the edges, the questions are about exchange: why outside records are not showing up, or why a discharge summary did not reach the nursing home. Telling those two kinds of problems apart is the first step to routing each one to the right team.
🎓 CAHIMS / CPHIMS & HIMSS Perspective
CAHIMS Exam Domain Mapping
The EHR is foundational to every CAHIMS domain:
| CAHIMS Domain | How the EHR Appears |
|---|---|
| Healthcare & Technology Environments | HITECH and Meaningful Use history; ONC certification and CEHRT; information blocking rules; EHR versus EMR versus PHR |
| Clinical Informatics | Clinical documentation; CPOE and CDS within the EHR; usability and clinician burden; data quality |
| Healthcare Information & Systems Management | System selection and implementation lifecycle; interfaces and integration; downtime and business continuity; optimization |
| Management & Leadership | Change management for adoption; governance of build decisions; measuring return on investment and outcomes |
Key Terms to Know Alongside EHR
- EMR (Electronic Medical Record) — a single organization’s digital chart; not necessarily designed for exchange
- PHR (Personal Health Record) — health information compiled and controlled by the patient
- CEHRT (Certified EHR Technology) — EHR software certified under the ONC Health IT Certification Program
- CHPL (Certified Health IT Product List) — ONC’s public list of certified health IT products and versions
- HL7 EHR System Functional Model — an HL7 standard describing the functions an EHR system should support
- Interoperability — the ability of systems to exchange and use information, which turns an EMR into a true EHR
HIMSS Organizational Position
HIMSS measures how fully hospitals use their EHRs through the Electronic Medical Record Adoption Model (EMRAM), an eight-stage maturity model that runs from basic ancillary systems to a fully electronic, data-driven environment. HIMSS also advocates for interoperability and reduced clinician burden through its public policy work, and members can find EHR optimization research through the HIMSS Resource Center.
🔗 Explore Further: External References
- ONC — National Trends in Hospital and Physician Adoption of Electronic Health Records https://healthit.gov/data/quickstats/national-trends-hospital-and-physician-adoption-electronic-health-records/
- ONC — Certified Health IT Product List (CHPL) https://chpl.healthit.gov/
- National Academies — Key Capabilities of an Electronic Health Record System (2003) https://www.nationalacademies.org/publications/10781
- HL7 International — EHR System Functional Model, Release 2 https://www.hl7.org/implement/standards/product_brief.cfm?product_id=269
- ONC — Health IT Certification Program https://healthit.gov/certification-health-it/about-onc-health-it-certification-program/
- HIMSS — Electronic Medical Record Adoption Model (EMRAM) https://www.himss.org/maturity-models/emram
Term source: HIMSS Dictionary of Health Information and Technology Terms, Acronyms, and Organizations, 6th Edition (2025). All definitions in this series are paraphrased for editorial purposes. Readers are encouraged to consult the primary source for exact language.
Eric Andrew Kristof, RN, CAHIMS is a Healthcare IT professional and HIMSS Arkansas Chapter member based in Hot Springs Village, AR, with hands-on Epic Go-Live experience and a diverse healthcare and IT background. He writes at kristof.org at the intersection of clinical care and healthcare technology.
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