Canadian Health Information Management Association Practice Exam

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Study for the Canadian Health Information Management Association Exam. Test your knowledge with flashcards and multiple choice questions, detailed explanations included. Ensure your success on the exam!

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What is an 'overlay' in a client registry?

One person has multiple identifiers in different systems.
One person has two different identifiers in the same source system.
Two people share one identifier.
None of the above.

The correct answer is: Two people share one identifier.

An overlay in a client registry refers to the situation where two distinct individuals are assigned the same unique identifier within the registry system, which can lead to errors in data exchange and discrepancies in health records. This scenario is critical because it compromises patient safety and the integrity of health data, as information for two separate clients may be incorrectly associated due to this shared identifier. The nature of an overlay emphasizes the need for robust data management practices to ensure that each individual’s health information remains distinct and accurately reflects their identity. Recognizing the impact that an overlay can have on healthcare operations underscores the importance of effective client registry systems designed to avoid such situations.