5 exercises — choose the best-structured answer covering HL7/FHIR, EHR integration, HIPAA compliance, and interoperability.
Structure for Healthcare IT Specialist answers
Tip 1: Distinguish HL7 v2 (pipe-delimited messages) from FHIR (RESTful API + JSON/XML Resources)
Tip 2: Name HIPAA safeguards: Administrative, Physical, Technical — encryption, audit logs, access control
Tip 3: Explain EHR integration patterns: direct API, HL7 interface engine, SMART on FHIR app launch
Tip 4: Mention interoperability standards: FHIR R4, CDS Hooks, IHE profiles, USCDI data classes
0 / 5 completed
1 / 5
The interviewer asks: "What is the difference between HL7 v2 and FHIR, and when would you use each?" Which answer best demonstrates healthcare interoperability knowledge?
Option B is strongest — it names HL7 v2 message types, transport (MLLP), limitations, then contrasts with FHIR's REST/Resource model, auth standard, and regulatory mandate. Key structure: HL7 v2: MLLP + ADT/ORU/ORM → legacy EHR; FHIR R4: REST + Resources + SMART/OAuth → modern apps + ONC mandate. Option A is vague. Option C incorrectly limits FHIR to mobile apps. Option D is wrong — HL7 v2 is pipe-delimited, not XML.
2 / 5
The interviewer asks: "How do you ensure HIPAA compliance in a healthcare IT system you are building?" Which answer best demonstrates compliance engineering?
Option B covers all three HIPAA safeguard categories with concrete engineering controls. Key structure: Administrative (training + BAA) → Physical (access control) → Technical (AES-256 + TLS + RBAC + audit logs + MFA) → no PHI in logs → field encryption → pen testing → BAA for vendors. Option A addresses only one control (authentication). Option C conflates HIPAA with basic web security practices. Option D is incorrect — HIPAA has no government certification process; organisations self-attest.
3 / 5
The interviewer asks: "What is SMART on FHIR and how does it enable third-party app integration with an EHR?" Which answer best demonstrates FHIR ecosystem knowledge?
Option B correctly explains the framework, the EHR launch flow steps, OAuth scopes, standalone launch, and regulatory context. Key structure: OAuth 2.0 + OIDC + FHIR → EHR launch (launch token → access token → patient-scoped FHIR calls) → standalone launch → ONC mandate. Option A confuses the acronym. Option C describes a generic API key, not OAuth 2.0. Option D confuses SMART with a testing tool.
4 / 5
The interviewer asks: "How would you design an integration between two EHR systems that need to exchange patient records?" Which answer best demonstrates integration architecture?
Option B describes a production-grade integration with transformation, terminology mapping, patient matching, and error handling. Key structure: interface engine (Mirth/Rhapsody) → HL7/FHIR input → SNOMED/LOINC/RxNorm mapping → MPI patient matching → FHIR delivery → error queues + audit logs → bulk FHIR $export for migration. Option A (CSV batch) lacks real-time capability and is error-prone. Option C (direct REST) skips transformation and patient matching. Option D requires vendor cooperation on proprietary schemas — impractical.
5 / 5
The interviewer asks: "What is CDS Hooks and how does it integrate clinical decision support into an EHR workflow?" Which answer best demonstrates clinical decision support knowledge?
Option B correctly explains the hook/event model, the payload structure, the Card response format, and real use cases. Key structure: hook event (patient-view/order-sign) → FHIR context payload → CDS service evaluation → Cards (info/warning/suggestion) → inline EHR display → vendor-neutral + SMART auth. Option A conflates CDS with AI diagnoses. Option C describes a notification system, not workflow-embedded CDS. Option D confuses CDS Hooks with frontend UI scripting.