IRMAA
Medical abbreviation · Health Insurance
| Stands for | Income-Related Monthly Adjustment Amount |
|---|---|
| Categories | Medical |
IRMAA stands for Income-Related Monthly Adjustment Amount, a health insurance abbreviation.
Surcharge added to Medicare Part B and Part D premiums for higher-income beneficiaries, based on modified adjusted gross income from the tax return two years earlier. In 2025 it applied to individuals with incomes above US$106,000 and joint filers above US$212,000.
Example: IRMAA notice: our 2023 home sale pushed our 2025 Part B premiums higher.
Usage notes
People whose income drops after a life-changing event, such as retirement, divorce or a spouse's death, can ask Social Security to use more recent income by filing Form SSA-44. There are several income brackets, each with a larger surcharge. Pronounced "EER-ma".
Related abbreviations
More health insurance abbreviations
- ICHRA – Individual coverage health reimbursement arrangement
- IDR – Independent dispute resolution
- IEP – Initial Enrollment Period
- IME – Independent medical examination
- IPA – Independent practice association
- IPPS – Inpatient Prospective Payment System
- LCD – Local coverage determination
- LIS – Low-Income Subsidy (Extra Help)
- LPFSA – Limited-purpose flexible spending account
- LTCI – Long-term care insurance
- MA – Medicare Advantage
- MAC – Medicare Administrative Contractor
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This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.