Reviewed by Dustin Brown, MS, FACHE. Last reviewed July 2026.
Medical malpractice insurance covers a healthcare provider’s legal defence and any damages if a patient claims that professional negligence caused them harm. The single most important thing to understand when choosing a policy is the difference between claims-made and occurrence coverage, because it determines whether you are protected after you leave a job, and whether you will need to buy expensive tail coverage. Requirements also vary by state rather than being uniform. Here is how it works.
What It Covers and Who Needs It
Malpractice insurance, also called professional liability insurance, pays for legal defence costs and any settlements or damages arising from a claim of professional negligence that harmed a patient.
Physicians carry it, and so do nurse practitioners, physician assistants, dentists, and healthcare facilities. It is frequently required by employers, by hospitals as a condition of admitting privileges, and in some states by law.
The Two Policy Types
This is the distinction that matters most, and getting it wrong can leave you exposed years later.
Occurrence coverage protects you against any incident that happened during the policy period, no matter when the claim is filed, even years after the policy has ended. It costs more upfront, but it needs no additional coverage when you leave.
Claims-made coverage only protects you if the policy is active both when the incident occurred and when the claim is filed. It is cheaper in the early years, with the premium rising to full cost over about five years. The catch is that it creates a coverage gap the moment the policy ends.
Why Claims-Made Needs Tail Coverage
Here is the practical problem. Malpractice claims often arrive long after the care was delivered. If you have a claims-made policy and then retire, change jobs, or switch insurers, a claim filed after your policy ends about an incident from when it was active would not be covered, because the policy is no longer in force.
Tail coverage, formally an extended reporting endorsement, closes that gap. It extends the reporting window so that claims filed later about incidents during your policy period remain covered.
Tail coverage is expensive. It is commonly quoted at roughly 150% to 300% of your annual mature premium, purchased as a one-time cost when you leave. This is a number worth knowing before you accept a job with a claims-made policy, because you or your next employer may have to pay it.
There is an alternative called nose coverage, or prior acts coverage, where your new insurer agrees to cover incidents from before your new policy started. This avoids buying tail from the old insurer, and is often negotiated when changing jobs.
State Requirements Vary
Do not assume the rules are the same everywhere, because they are not.
Some states require providers or facilities to carry malpractice coverage, while others do not mandate it at all. Many states cap non-economic damages, though some of those caps have been struck down by state courts. Some states run patient compensation funds, and statutes of limitations for filing a claim differ from state to state.
Because of this variation, the specific requirements that apply to you depend on where you practise, and should be confirmed with your state medical board or a malpractice broker rather than assumed.
What Drives the Premium
Three factors matter most. Specialty, since high-risk fields such as neurosurgery and obstetrics cost far more than family medicine. Location, since premiums vary widely by state and even by county. And claims history, since past claims raise your rate. Coverage limits and whether you work full or part time also affect the price.
Malpractice Insurance FAQs
What is the difference between claims-made and occurrence coverage?
Occurrence covers any incident that happened during the policy period, whenever the claim is filed. Claims-made covers a claim only if the policy is active both when the incident happened and when the claim is filed, which creates a gap when the policy ends.
What is tail coverage and why do I need it?
Tail coverage extends a claims-made policy’s reporting window so later claims about past incidents stay covered after you leave, retire, or switch insurers. Without it, those claims would not be covered. It typically costs 150% to 300% of your annual premium.
What is nose coverage?
Nose coverage, or prior acts coverage, is when your new insurer agrees to cover incidents from before your new policy began. It is an alternative to buying tail from your previous insurer.
Is malpractice insurance required by law?
It varies by state. Some states mandate coverage for providers or facilities and others do not. Employers and hospitals frequently require it regardless of state law.
Mainly your specialty, your location, and your claims history. High-risk specialties like neurosurgery and obstetrics cost far more than lower-risk fields, and premiums differ substantially by state.
Which policy type is better?
Occurrence is simpler and needs no tail, but costs more upfront. Claims-made is cheaper early but requires tail or nose coverage when you leave. The right choice depends on your career plans and who bears the tail cost.
