WGU D190 Introduction to Healthcare IT Systems 2026/2027 | ACTUAL-
Style Practice Questions & Answers, Healthcare Information Technology
Exam Prep, Electronic Health Records, Clinical Information Systems, Data
Management, Privacy, Security, and Detailed Rationales
WGU D190 Introduction to Healthcare IT Systems — 170 Practice
Questions
Question 1: What is the primary purpose of a Master Patient Index (MPI)
in a healthcare organization?
A. To store radiology images for diagnostic review
B. To ensure unique identification of each patient across the enterprise
C. To manage employee scheduling and payroll functions
D. To track pharmaceutical inventory levels
CORRECT ANSWER: B. To ensure unique identification of each patient
across the enterprise
Rationale: The MPI is a critical database that maintains a unique identifier
for every patient within a healthcare system. Its primary function is to
prevent duplicate records and ensure that clinical data from various
departments and encounters are correctly linked to the right individual.
Question 2: Which data element is essential for accurate patient
matching within a health information exchange (HIE)?
A. Insurance policy number
B. Patient's employer name
C. Date of birth and full legal name
D. Preferred pharmacy location
CORRECT ANSWER: C. Date of birth and full legal name
Rationale: Demographic elements such as full legal name and date of birth
are considered core identifiers for patient matching. These elements, along
with others like gender and address, help algorithms correctly link records
while minimizing false matches.
Question 3: What is a critical consequence of failing to maintain a
clean Master Patient Index?
,A. Increased risk of patient safety events due to fragmented records
B. Reduced costs for the health information management department
C. Improved interoperability with external health systems
D. Faster registration processes at the point of care
CORRECT ANSWER: A. Increased risk of patient safety events due to
fragmented records
Rationale: Duplicate or overlayed records in the MPI lead to fragmented
clinical histories. Clinicians may make decisions based on incomplete
information, potentially resulting in medication errors, missed diagnoses,
or inappropriate treatments.
Question 4: Which term describes the process of merging duplicate
patient records into a single, authoritative record?
A. Data segmentation
B. Record reconciliation
C. Chart abstraction
D. Data warehousing
CORRECT ANSWER: B. Record reconciliation
Rationale: Record reconciliation involves reviewing potential duplicate
records and merging them into one record that contains all historical data.
This process requires careful review to ensure no clinical information is lost
or incorrectly combined.
Question 5: In a healthcare data dictionary, what does "valid values"
refer to?
A. The encryption standard used to protect the data field
B. The list of acceptable entries for a specific data element
C. The speed at which data can be retrieved from the field
D. The name of the database administrator responsible for the field
CORRECT ANSWER: B. The list of acceptable entries for a specific data
element
,Rationale: Valid values define the permissible responses or formats for a
given field. For example, a gender field might have valid values of Male,
Female, Other, or Unknown. This ensures data consistency and supports
interoperability.
Question 6: Which element is often missing from a data dictionary that
causes interoperability problems?
A. The database vendor's contact information
B. The format and allowed range for each field
C. The name of the IT director
D. The hospital's marketing slogan
CORRECT ANSWER: B. The format and allowed range for each field
Rationale: Without specifications for format (e.g., MM/DD/YYYY) and
allowed ranges (e.g., systolic blood pressure between 50-300), data cannot
be reliably exchanged or interpreted by receiving systems, directly
impacting interoperability.
Question 7: What is the primary role of an Admission-Discharge-
Transfer (ADT) system?
A. To manage patient billing and claims processing
B. To track patient movement and location throughout the facility
C. To analyze population health trends
D. To schedule operating room procedures
CORRECT ANSWER: B. To track patient movement and location
throughout the facility
Rationale: The ADT system is a foundational administrative system that
records a patient's admission, transfers between units, and discharge. This
information supports bed management, coordination of services, and
accurate census reporting.
Question 8: Which technology allows providers to enter orders that are
immediately shared with pharmacy, laboratory, and radiology?
, A. Picture Archiving and Communication System (PACS)
B. Computerized Provider Order Entry (CPOE)
C. Electronic Data Interchange (EDI)
D. Radio Frequency Identification (RFID)
CORRECT ANSWER: B. Computerized Provider Order Entry (CPOE)
Rationale: CPOE enables physicians and other authorized providers to
enter medical orders electronically. These orders are routed directly to the
appropriate departments, reducing transcription errors and improving
turnaround times.
Question 9: What is the primary function of a Clinical Decision Support
System (CDSS)?
A. To replace clinical judgment with automated diagnoses
B. To integrate patient data with clinical knowledge to support care
decisions
C. To manage hospital financial accounting
D. To store scanned paper documents
CORRECT ANSWER: B. To integrate patient data with clinical knowledge
to support care decisions
Rationale: CDSS provides clinicians with evidence-based
recommendations, alerts, and reminders at the point of care. It is designed
to augment, not replace, professional judgment and is a key tool for
improving quality and safety.
Question 10: Which of the following is an example of an administrative
health information system?
A. Laboratory Information System (LIS)
B. Radiology Information System (RIS)
C. Patient registration and billing system
D. Pharmacy dispensing system
CORRECT ANSWER: C. Patient registration and billing system
Style Practice Questions & Answers, Healthcare Information Technology
Exam Prep, Electronic Health Records, Clinical Information Systems, Data
Management, Privacy, Security, and Detailed Rationales
WGU D190 Introduction to Healthcare IT Systems — 170 Practice
Questions
Question 1: What is the primary purpose of a Master Patient Index (MPI)
in a healthcare organization?
A. To store radiology images for diagnostic review
B. To ensure unique identification of each patient across the enterprise
C. To manage employee scheduling and payroll functions
D. To track pharmaceutical inventory levels
CORRECT ANSWER: B. To ensure unique identification of each patient
across the enterprise
Rationale: The MPI is a critical database that maintains a unique identifier
for every patient within a healthcare system. Its primary function is to
prevent duplicate records and ensure that clinical data from various
departments and encounters are correctly linked to the right individual.
Question 2: Which data element is essential for accurate patient
matching within a health information exchange (HIE)?
A. Insurance policy number
B. Patient's employer name
C. Date of birth and full legal name
D. Preferred pharmacy location
CORRECT ANSWER: C. Date of birth and full legal name
Rationale: Demographic elements such as full legal name and date of birth
are considered core identifiers for patient matching. These elements, along
with others like gender and address, help algorithms correctly link records
while minimizing false matches.
Question 3: What is a critical consequence of failing to maintain a
clean Master Patient Index?
,A. Increased risk of patient safety events due to fragmented records
B. Reduced costs for the health information management department
C. Improved interoperability with external health systems
D. Faster registration processes at the point of care
CORRECT ANSWER: A. Increased risk of patient safety events due to
fragmented records
Rationale: Duplicate or overlayed records in the MPI lead to fragmented
clinical histories. Clinicians may make decisions based on incomplete
information, potentially resulting in medication errors, missed diagnoses,
or inappropriate treatments.
Question 4: Which term describes the process of merging duplicate
patient records into a single, authoritative record?
A. Data segmentation
B. Record reconciliation
C. Chart abstraction
D. Data warehousing
CORRECT ANSWER: B. Record reconciliation
Rationale: Record reconciliation involves reviewing potential duplicate
records and merging them into one record that contains all historical data.
This process requires careful review to ensure no clinical information is lost
or incorrectly combined.
Question 5: In a healthcare data dictionary, what does "valid values"
refer to?
A. The encryption standard used to protect the data field
B. The list of acceptable entries for a specific data element
C. The speed at which data can be retrieved from the field
D. The name of the database administrator responsible for the field
CORRECT ANSWER: B. The list of acceptable entries for a specific data
element
,Rationale: Valid values define the permissible responses or formats for a
given field. For example, a gender field might have valid values of Male,
Female, Other, or Unknown. This ensures data consistency and supports
interoperability.
Question 6: Which element is often missing from a data dictionary that
causes interoperability problems?
A. The database vendor's contact information
B. The format and allowed range for each field
C. The name of the IT director
D. The hospital's marketing slogan
CORRECT ANSWER: B. The format and allowed range for each field
Rationale: Without specifications for format (e.g., MM/DD/YYYY) and
allowed ranges (e.g., systolic blood pressure between 50-300), data cannot
be reliably exchanged or interpreted by receiving systems, directly
impacting interoperability.
Question 7: What is the primary role of an Admission-Discharge-
Transfer (ADT) system?
A. To manage patient billing and claims processing
B. To track patient movement and location throughout the facility
C. To analyze population health trends
D. To schedule operating room procedures
CORRECT ANSWER: B. To track patient movement and location
throughout the facility
Rationale: The ADT system is a foundational administrative system that
records a patient's admission, transfers between units, and discharge. This
information supports bed management, coordination of services, and
accurate census reporting.
Question 8: Which technology allows providers to enter orders that are
immediately shared with pharmacy, laboratory, and radiology?
, A. Picture Archiving and Communication System (PACS)
B. Computerized Provider Order Entry (CPOE)
C. Electronic Data Interchange (EDI)
D. Radio Frequency Identification (RFID)
CORRECT ANSWER: B. Computerized Provider Order Entry (CPOE)
Rationale: CPOE enables physicians and other authorized providers to
enter medical orders electronically. These orders are routed directly to the
appropriate departments, reducing transcription errors and improving
turnaround times.
Question 9: What is the primary function of a Clinical Decision Support
System (CDSS)?
A. To replace clinical judgment with automated diagnoses
B. To integrate patient data with clinical knowledge to support care
decisions
C. To manage hospital financial accounting
D. To store scanned paper documents
CORRECT ANSWER: B. To integrate patient data with clinical knowledge
to support care decisions
Rationale: CDSS provides clinicians with evidence-based
recommendations, alerts, and reminders at the point of care. It is designed
to augment, not replace, professional judgment and is a key tool for
improving quality and safety.
Question 10: Which of the following is an example of an administrative
health information system?
A. Laboratory Information System (LIS)
B. Radiology Information System (RIS)
C. Patient registration and billing system
D. Pharmacy dispensing system
CORRECT ANSWER: C. Patient registration and billing system
