Healthcare Information and Management Systems
The Healthcare Information and Management Systems domain tests how clinical, financial, and administrative systems connect-and how standards, regulation, and workflow shape that connection. Expect scenario questions: a new clinic needs orders to reach a pharmacy; a hospital joins an HIE; a downtime event occurs. You must name the right system, message, or control and explain why.
Core systems and data flow
An EHR is a longitudinal record shared across care settings; an EMR is a single organization's legal record. ADT messages-admit, discharge, transfer-drive registration, billing, and clinical updates. CPOE sends orders to pharmacy, radiology, and laboratory systems, and CDS rules fire at order entry. Revenue-cycle transactions include eligibility (270/271), claims (837), and remittance (835). An HIE may be query-based (pull) or push-based; consent models vary by state and organization.
Interoperability standards
HL7 v2 is event-driven and pipe-delimited, common for ADT, orders, and results. FHIR is RESTful and resource-based, used for modern APIs and SMART on FHIR apps. DICOM handles imaging; X12 handles administrative transactions. Terminology matters: LOINC for labs, SNOMED CT for clinical findings, ICD-10 for diagnoses, RxNorm for medications, CPT for procedures.
Privacy, security, and compliance
The HIPAA Privacy Rule governs uses and disclosures, minimum necessary, and patient rights. The Security Rule requires administrative, physical, and technical safeguards for ePHI. HITECH adds breach notification and extends obligations to business associates, who need BAAs. Use role-based access, break-glass procedures, and audit logs.
Systems lifecycle and change control
Projects move through needs assessment, workflow analysis, requirements, vendor selection, build, testing (unit, integration, UAT), go-live, and optimization. Plan downtime with paper forms, read-only access, and post-event reconciliation.
Worked example
A clinic wants to send lab results to a regional HIE and alert the PCP. Reasoning: results are clinical data, so use HL7 v2 ORU^R01 if the HIE accepts event messages, or FHIR DiagnosticReport if it exposes a modern API. Confirm the HIE's consent model and map LOINC codes. A PDF or CSV would fail semantic interoperability.
Traps that cost marks
Confusing EHR and EMR. Assuming FHIR replaces HL7 v2 everywhere. Treating HIPAA as only a security rule. Forgetting BAAs. Ignoring downtime reconciliation. Mixing LOINC with SNOMED CT.