What Is the MIB (Medical Information Bureau)?

The Medical Information Bureau (MIB) is a not-for-profit, member-owned specialty consumer reporting agency that stores encrypted risk-category codes, not full medical records, to help member insurance carriers verify underwriting information and detect fraud. Founded in 1902, MIB now covers members that issue 99% of all individually underwritten life insurance policies in the U.S. and Canada.

What Is the Medical Information Bureau and How Does It Protect Insurers?

The Medical Information Bureau (MIB Group, Inc.) is a shared underwriting verification database founded in 1902 that stores encrypted coded flags representing health and lifestyle risk categories significant to individual life, health, disability, and long-term care underwriting. Its approximately 500 to 800 member carriers collectively issue 99% of all individual life insurance policies sold in the U.S. and Canada.

MIB protects against two specific carrier losses: adverse selection, where applicants conceal relevant health history across multiple companies, and application stacking, where applicants buy more coverage than they would qualify for if any one carrier could see the full picture. Per MIB's own press release, the Total Line Service addresses a challenge costing the life insurance industry an estimated $1 billion annually in fraud, stacking, and churning losses. MIB currently maintains an active file on approximately 15 million consumers, representing fewer than 20% of the insured population, meaning most applicants have no MIB record at all.

How Do MIB Coded Flags Work in the Underwriting Process?

MIB does not store physician notes, lab results, hospital discharge summaries, or imaging reports. Instead, it uses approximately 230 proprietary, encrypted codes that represent risk categories, such as asthma, diabetes, or depression, flagged during a prior individually underwritten application. Carriers submit a code when they find a medically significant condition; the next carrier that looks up that applicant sees the flag, not the underlying record.

The process works in two directions. When a carrier underwrites a new application, it first queries MIB to see if any prior flags exist. After completing its own independent underwriting, it then submits any newly discovered codes back to MIB for future carriers to reference. Critically, MIB bylaws prohibit any carrier from denying coverage or placing an applicant in a higher rate class based solely on an MIB code. The carrier must independently verify the condition through its own underwriting investigation before acting on the flag. MIB records are also retained for only 3 to 7 years, so older conditions eventually age off the file.

MIB File Detail	What It Includes	What It Excludes
Data format	Encrypted coded flags (~230 codes)	Physician notes, lab results, imaging
Policy scope	Individually underwritten policies	Group insurance policies
Consumer coverage	~15 million active files	Majority of insured population
Retention window	3 to 7 years	Records beyond retention period
Decision authority	Flags trigger verification	Flags alone cannot deny or rate up

What Compliance Obligations Under the FCRA Apply to MIB Reports?

MIB is regulated under the federal Fair Credit Reporting Act (FCRA) as a specialty consumer reporting agency, not under HIPAA. That means the full framework of FCRA rights applies: applicants must provide written authorization before any carrier can query MIB, and the carrier must follow adverse-action procedures if MIB data influenced an underwriting decision. Insurance agencies cannot query MIB directly; only member carriers have access.

For agency operators, the FCRA compliance obligation is primarily procedural: ensure that every individual application collects valid written consent authorizing the carrier to access MIB data, and that applicants receive the required FCRA disclosure if an adverse action results. The Consumer Financial Protection Bureau (CFPB) lists MIB, Inc. as a specialty consumer reporting company subject to these rules. Agencies running high-volume application workflows should build consent capture into every intake form and maintain audit-ready records, since a missing authorization can expose both the carrier and the distributing agency to regulatory scrutiny.

How Can a Consumer Request Their Free MIB File and Dispute Inaccurate Data?

Any consumer can request a free copy of their MIB file once every 12 months directly from MIB Group at mib.com, a right established under the FCRA. If the file contains an inaccurate coded flag, the consumer can file a formal dispute, which MIB is required to investigate, typically within 30 to 45 days. An MIB profile does not show whether a prior application was approved or denied.

For producers who prepare applicants before submission, this right is operationally useful. A client who has previously applied for individual life, disability, or long-term care coverage at any MIB member carrier may have a coded flag they are unaware of. Encouraging clients to review their MIB file before a new application reduces the chance of a flag surfacing unexpectedly during underwriting, which can delay a placement and complicate commission timing. Verified, clean files move faster through underwriting than flagged ones that require independent investigation.

How Does MIB Reduce Adverse Selection and Keep the Individual Market Stable?

MIB reduces adverse selection by making it impossible for an applicant to conceal a medically significant condition across multiple member carriers without detection. Adverse selection in individually underwritten insurance markets occurs when high-risk applicants systematically obtain coverage without disclosing their risk profile, shifting costs onto lower-risk policyholders and forcing carriers to raise rates broadly. Research published in PubMed confirms that adverse selection represents a structural challenge to market stability in individual insurance markets.

MIB's coded-flag system creates a shared memory across its 500 to 800 member carriers that persists for 3 to 7 years. An applicant who disclosed asthma to one carrier and omitted it on a second application will trigger a flag at the second carrier, prompting the independent investigation the bylaws require. The result is that the individual life market can price risk more accurately, which supports rate stability for all policyholders. Agency owners whose producers place large volumes of individually underwritten policies benefit directly: cleaner books, fewer post-issue rescissions, and more predictable carrier relationships.

For agencies building the operational infrastructure to manage high-volume application pipelines without compliance gaps, Kadence is purpose-built for life insurance teams, combining a CRM, Voice AI, and an AEO website into one system. If you want to see how it fits your workflow, book a demo.

Sources

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