Overview
The MIB (formerly the Medical Information Bureau) is a cooperative information exchange used by participating life, health, disability, critical illness, and long-term care insurers.
Its database contains coded summaries of information that insurers report about applications and underwriting concerns so companies can detect inconsistencies and potential fraud when someone applies for coverage with multiple insurers.
Key takeaways
- MIB shares coded underwriting information among member insurers to help detect omissions and fraud.
- Your MIB report contains codes and flags, not full medical records, and companies cannot base a decision solely on it.
- Consumers are entitled to request a free copy of their MIB report and can dispute inaccuracies.
How it works
When you apply for individual life, disability, long-term care, or similar coverage, the insurer may query the MIB database to see if prior applications or reported items exist for you.
If the insurer finds a relevant code or entry, you should receive a pre-authorization notice and a copy of the report release form as part of the underwriting process.
MIB reports use shorthand codes to indicate medical conditions, diagnoses, or tests that could affect underwriting; they are not a substitute for your medical records or clinical charts.
Insurers are required to follow their own underwriting rules and are not allowed to make coverage decisions based only on the MIB report; they typically verify information through medical records, exams, or physician statements.
What it may cover (and what it may not)
MIB entries commonly reflect information reported by insurers about prior applications, known conditions, diagnoses, or testing that emerged during underwriting.
Typical items that may appear include past insurance applications, reported health conditions, and certain test results indicated through codes rather than full narratives.
- May include: coded indications of diagnoses, prior insurer inquiries, or underwriting concerns reported by member companies.
- May not include: full medical records, detailed treatment notes, or unreported diagnoses that never entered the underwriting process.
- Does not replace: the insurer's independent review of your medical file, exams, or other underwriting investigations.
Common mistakes to avoid
Assuming the MIB report is a complete medical record — it is not; it contains codes and summaries meant for underwriting reference.
Failing to request your free annual report — checking your MIB file helps you spot errors before they affect an application.
Ignoring discrepancies — if you find incorrect items, initiate a dispute promptly and provide documentation to support corrections.
Questions to ask an agent
Will you check the MIB report during my application and will I receive any pre-release notices?
What steps will you take if the MIB report shows a coded condition I did not disclose or that appears incorrect?
How long after an application does MIB typically show an entry for that application, and can I review it before any decision is made?
Next steps
Request your consumer copy of the MIB report to review for accuracy and to learn what insurers may see during underwriting.
If you find errors, send a written dispute to MIB with identification and supporting documentation so they can investigate and correct any inaccuracies.
If you want personalized help interpreting a report or preparing documentation for a dispute, consider talking with an insurance professional — talk to an agent who can review the issue with you.
Frequently Asked Questions
How often can I get a free copy of my MIB report?
Consumers are entitled to request a free copy of their MIB report periodically; check MIB's consumer access procedures to learn the current request options.
Does the MIB report contain my full medical records?
No, MIB reports contain coded entries and summaries related to insurance underwriting, not complete medical records or treatment notes.
Can an insurer deny coverage based only on the MIB report?
No, insurers are not supposed to rely solely on an MIB entry; they must use their full underwriting process and verify information through medical records or other sources.
What should I do if I find incorrect information in my MIB file?
File a written dispute with MIB, include proof of identity and supporting documents, and request an investigation and correction if warranted.