A core element of the master patient index is the patient's insurance.

• A. True
• B. False
• C. It is the patient's demographics
• D. It is the patient's diagnosis history

Answer: (B)

The master patient index is designed to identify the same person across different systems so all related records can be linked correctly. It relies on stable, identifying information such as the patient’s name, date of birth, gender, current address or contact details, and a unique patient identifier assigned by the organization (like an MRN). These elements stay relatively consistent and are used to match records from various encounters.

Insurance information, while crucial for billing and coverage, changes frequently and can be shared across policies or providers. Because it’s not reliable for consistently identifying a single patient across systems, it isn’t used as a primary identifier in the MPI. Insurance data lives in billing or payer systems and is tied to the patient once identity is established.

So, the statement isn’t correct: the MPI’s identifying data are demographics and organization-assigned identifiers, not the patient’s insurance.