Short, working definitions of the terms used in
this guide, written for product, clinical, design,
and engineering leaders.
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HIPAA
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A United States federal framework that applies
to covered entities, business associates, and
certain uses and disclosures of protected health
information. It does not govern every consumer
health app, so applicability must be mapped
rather than assumed.
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PHI (Protected Health Information)
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Individually identifiable health information
protected under HIPAA when created, received,
maintained, or transmitted by covered entities
or business associates in covered contexts.
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EHR / EMR (Electronic Health Record / Electronic Medical Record)
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Systems of record for clinical care. They are also
the operating environment many clinician-facing
products must integrate with rather than pretend
does not exist.
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Patient Portal
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The patient-facing window into records, results,
messaging, scheduling, billing, and care coordination.
It is often where laypeople encounter medical
information without a clinician beside them.
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HL7 / FHIR
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Standards used to exchange health information
between systems. They provide the plumbing for
interoperability; the interface still has to explain
source, freshness, completeness, and conflict.
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Interoperability
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The ability of health systems to exchange and
use information. Patients experience it as a
simple question: do I have to carry my own
history between providers?
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Telehealth
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Care delivered remotely, typically by video.
As a design problem, the entire encounter
around the call: preparation, waiting,
failure recovery, and follow-through.
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SaMD (Software as a Medical Device)
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Software intended for a medical purpose that
performs that purpose without being part of
a hardware medical device. Regulatory treatment
depends on intended use, function, jurisdiction,
and risk.
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Informed Consent
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Agreement given with genuine understanding of
what is being agreed to. In design terms,
layered plain-language consent flows rather
than walls of legal text with a checkbox.
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Health Literacy
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A person's capacity to obtain, understand, and
act on health information. Highly variable across
the population, and the reason plain language
is a clinical feature rather than a style choice.
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Reference Range
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The band of values considered typical for a
lab result. The context that turns a raw number
into meaning, and the minimum a patient-facing
result display owes its reader.
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Critical Value
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A result requiring urgent clinical attention.
In interface terms, the tier of information
that needs a designed escalation path,
not just a louder notification.
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Adherence
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The degree to which patients follow their
treatment regimens. Driven far more by friction,
cost, and side effects than by willpower,
which is why adherence UX targets logistics
rather than shame.
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Formulary
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The list of medications covered by an insurance
plan. A frequent source of prescription surprise,
and a data point that saves patients real money
when surfaced at the right moment.
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Prior Authorization
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A payer approval process required before
certain care, services, or medications are
covered. One of healthcare's most opaque waits,
and a process whose status visibility can
materially improve the experience.
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340B
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The federal program through which qualifying
providers purchase discounted medications.
Operationally, a compliance-heavy inventory
and reconciliation discipline whose software
demands audit-grade accuracy.
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Care Team
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The set of professionals involved in a
patient's care. In product terms, the humans
an interface should keep reachable, especially
at the moments the product delivers hard information.
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Caregiver Access
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Designed, role-appropriate access for family
members managing another person's care.
The feature whose absence patients work around
with shared passwords.
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RPM (Remote Patient Monitoring)
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Clinical monitoring through connected devices
outside the care setting. The UX challenge is
to make device state, data freshness, thresholds,
and escalation clear without manufacturing
continuous anxiety.
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Clinical Decision Support
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Software that offers clinicians recommendations
and alerts at the point of care. Valuable exactly
in proportion to its relevance, and the origin
of healthcare's alert fatigue problem.
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Automation Bias
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The human tendency to over-trust automated output.
A documented risk in clinical settings, and a design
problem addressed by making independent judgment
easier, not more awkward.
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PACS / DICOM
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The systems and standard format through which
medical imaging is stored and shared. The
infrastructure behind radiology workflows
and imaging marketplaces.