WGU D190 Introduction to Healthcare IT
Systems 2026/2027 | Exam Questions,
Answers & Detailed Rationales
WGU D190 Introduction to Healthcare IT Systems 2026/2027
Exam Questions, Answers & Detailed Rationales
• Comprehensive Study Material: This document contains 200 carefully curated
multiple-choice questions covering all core topics in healthcare IT systems,
designed to help you master the D190 course content and prepare for certification.
• Structured Learning Approach: Use these questions for self-assessment, topic
review, and exam preparation—answer each question, check the correct answer
and rationale provided, and focus additional study on areas where you struggle.
Question 1: Which of the following best defines an Electronic Health Record
(EHR)?
A) A paper-based document that stores patient demographic information only
B) A digital system that captures, maintains, and enables retrieval of patient health
information electronically
C) A billing system designed exclusively for insurance claim processing
D) A scheduling application used only by administrative staff
E) A database that stores historical patient data from the past 10 years only
✓ CORRECT ANSWER: B) A digital system that captures, maintains, and enables
retrieval of patient health information electronically
Rationale: An Electronic Health Record (EHR) is a comprehensive digital system
that includes all aspects of a patient's health information—clinical notes, diagnoses,
medications, lab results, and imaging reports. It enables healthcare providers to
access complete patient information electronically, improving care coordination
and decision-making. Options A, C, D, and E describe partial or incorrect functions
of healthcare IT systems but do not accurately define an EHR.
,Question 2: What is the primary purpose of HIPAA in healthcare information
technology?
A) To establish minimum wages for healthcare IT professionals
B) To protect patient privacy and ensure the security of health information
C) To require all healthcare facilities to use the same EHR system
D) To eliminate the need for electronic health records
E) To standardize medical equipment manufacturing
✓ CORRECT ANSWER: B) To protect patient privacy and ensure the security of
health information
Rationale: The Health Insurance Portability and Accountability Act (HIPAA) is
federal legislation specifically designed to protect the privacy and security of
Protected Health Information (PHI). It establishes standards for how healthcare
organizations must handle, store, and transmit patient data. HIPAA compliance is
foundational to healthcare IT systems. Options A, C, D, and E are not objectives of
HIPAA.
Question 3: Which component is essential for ensuring data security in
healthcare IT systems?
A) Unlimited access to all users without authentication
B) Encryption of sensitive patient data both in transit and at rest
C) Storing passwords in plain text for easy recovery
D) Disabling all firewalls to improve system speed
E) Sharing login credentials among multiple staff members
,✓ CORRECT ANSWER: B) Encryption of sensitive patient data both in transit
and at rest
Rationale: Encryption is a critical security control that protects patient data from
unauthorized access. By encoding sensitive information, even if data is intercepted
or breached, it remains unreadable without the proper decryption key. Options A,
C, D, and E represent security vulnerabilities that would compromise patient data
protection.
Question 4: What does interoperability mean in the context of healthcare IT
systems?
A) The ability of different systems to operate independently without communication
B) The ability of different healthcare IT systems to exchange and use data
effectively
C) The requirement that all healthcare facilities use identical software
D) The process of backing up data to external drives
E) The elimination of all electronic systems in favor of paper records
✓ CORRECT ANSWER: B) The ability of different healthcare IT systems to
exchange and use data effectively
Rationale: Interoperability enables different healthcare information systems,
devices, and applications to communicate and share data seamlessly. This is crucial
for continuity of care when patients receive treatment from multiple providers.
Standards like HL7 and FHIR support interoperability. Options A, C, D, and E do not
accurately describe interoperability.
Question 5: Which of the following is an example of a clinical decision support
system (CDSS)?
, A) A system that tracks employee attendance records
B) A system that recommends appropriate medications based on patient allergies
and drug interactions
C) A system used only for financial billing
D) A system that manages hospital inventory
E) A system that schedules patient appointments
✓ CORRECT ANSWER: B) A system that recommends appropriate medications
based on patient allergies and drug interactions
Rationale: A Clinical Decision Support System (CDSS) is designed to assist
healthcare providers in clinical decision-making by providing evidence-based
recommendations, alerts for drug interactions, contraindications, and clinical best
practices. This improves patient safety and care quality. Options A, C, D, and E
describe other healthcare IT functions but not clinical decision support.
Question 6: What is the role of a Health Information Exchange (HIE)?
A) To replace EHR systems in healthcare facilities
B) To facilitate the secure sharing of patient health information between different
providers and organizations
C) To store only insurance information
D) To eliminate the need for patient consent in data sharing
E) To manage only administrative records
✓ CORRECT ANSWER: B) To facilitate the secure sharing of patient health
information between different providers and organizations
Rationale: A Health Information Exchange (HIE) is a system or network that allows
healthcare organizations to securely exchange patient health information across
different systems and locations. This supports continuity of care and coordination
Systems 2026/2027 | Exam Questions,
Answers & Detailed Rationales
WGU D190 Introduction to Healthcare IT Systems 2026/2027
Exam Questions, Answers & Detailed Rationales
• Comprehensive Study Material: This document contains 200 carefully curated
multiple-choice questions covering all core topics in healthcare IT systems,
designed to help you master the D190 course content and prepare for certification.
• Structured Learning Approach: Use these questions for self-assessment, topic
review, and exam preparation—answer each question, check the correct answer
and rationale provided, and focus additional study on areas where you struggle.
Question 1: Which of the following best defines an Electronic Health Record
(EHR)?
A) A paper-based document that stores patient demographic information only
B) A digital system that captures, maintains, and enables retrieval of patient health
information electronically
C) A billing system designed exclusively for insurance claim processing
D) A scheduling application used only by administrative staff
E) A database that stores historical patient data from the past 10 years only
✓ CORRECT ANSWER: B) A digital system that captures, maintains, and enables
retrieval of patient health information electronically
Rationale: An Electronic Health Record (EHR) is a comprehensive digital system
that includes all aspects of a patient's health information—clinical notes, diagnoses,
medications, lab results, and imaging reports. It enables healthcare providers to
access complete patient information electronically, improving care coordination
and decision-making. Options A, C, D, and E describe partial or incorrect functions
of healthcare IT systems but do not accurately define an EHR.
,Question 2: What is the primary purpose of HIPAA in healthcare information
technology?
A) To establish minimum wages for healthcare IT professionals
B) To protect patient privacy and ensure the security of health information
C) To require all healthcare facilities to use the same EHR system
D) To eliminate the need for electronic health records
E) To standardize medical equipment manufacturing
✓ CORRECT ANSWER: B) To protect patient privacy and ensure the security of
health information
Rationale: The Health Insurance Portability and Accountability Act (HIPAA) is
federal legislation specifically designed to protect the privacy and security of
Protected Health Information (PHI). It establishes standards for how healthcare
organizations must handle, store, and transmit patient data. HIPAA compliance is
foundational to healthcare IT systems. Options A, C, D, and E are not objectives of
HIPAA.
Question 3: Which component is essential for ensuring data security in
healthcare IT systems?
A) Unlimited access to all users without authentication
B) Encryption of sensitive patient data both in transit and at rest
C) Storing passwords in plain text for easy recovery
D) Disabling all firewalls to improve system speed
E) Sharing login credentials among multiple staff members
,✓ CORRECT ANSWER: B) Encryption of sensitive patient data both in transit
and at rest
Rationale: Encryption is a critical security control that protects patient data from
unauthorized access. By encoding sensitive information, even if data is intercepted
or breached, it remains unreadable without the proper decryption key. Options A,
C, D, and E represent security vulnerabilities that would compromise patient data
protection.
Question 4: What does interoperability mean in the context of healthcare IT
systems?
A) The ability of different systems to operate independently without communication
B) The ability of different healthcare IT systems to exchange and use data
effectively
C) The requirement that all healthcare facilities use identical software
D) The process of backing up data to external drives
E) The elimination of all electronic systems in favor of paper records
✓ CORRECT ANSWER: B) The ability of different healthcare IT systems to
exchange and use data effectively
Rationale: Interoperability enables different healthcare information systems,
devices, and applications to communicate and share data seamlessly. This is crucial
for continuity of care when patients receive treatment from multiple providers.
Standards like HL7 and FHIR support interoperability. Options A, C, D, and E do not
accurately describe interoperability.
Question 5: Which of the following is an example of a clinical decision support
system (CDSS)?
, A) A system that tracks employee attendance records
B) A system that recommends appropriate medications based on patient allergies
and drug interactions
C) A system used only for financial billing
D) A system that manages hospital inventory
E) A system that schedules patient appointments
✓ CORRECT ANSWER: B) A system that recommends appropriate medications
based on patient allergies and drug interactions
Rationale: A Clinical Decision Support System (CDSS) is designed to assist
healthcare providers in clinical decision-making by providing evidence-based
recommendations, alerts for drug interactions, contraindications, and clinical best
practices. This improves patient safety and care quality. Options A, C, D, and E
describe other healthcare IT functions but not clinical decision support.
Question 6: What is the role of a Health Information Exchange (HIE)?
A) To replace EHR systems in healthcare facilities
B) To facilitate the secure sharing of patient health information between different
providers and organizations
C) To store only insurance information
D) To eliminate the need for patient consent in data sharing
E) To manage only administrative records
✓ CORRECT ANSWER: B) To facilitate the secure sharing of patient health
information between different providers and organizations
Rationale: A Health Information Exchange (HIE) is a system or network that allows
healthcare organizations to securely exchange patient health information across
different systems and locations. This supports continuity of care and coordination
