How Long Do You Have to File a Medical Malpractice Claim in Washington?

Time limits in medical malpractice cases are unforgiving. If you miss the deadline to file your claim in Washington, your case is over — no matter how strong it is, no matter how badly you were hurt. Courts do not grant exceptions because you did not know the rules.

This is why understanding the statute of limitations for medical malpractice in Washington is not optional. It is critical. And the rules are more nuanced than most people realize.

The Basic Rule: Three Years From the Act

If a surgeon made an error during a procedure on March 1, 2024, you would generally have until March 1, 2027 to file your lawsuit.

That sounds straightforward. It is not. The complications start when you consider that many people do not know they were harmed until long after the negligent act occurred.

The Discovery Rule: One Year From When You Knew (or Should Have Known)

Washington law accounts for the reality that medical injuries are not always immediately apparent. A misdiagnosis might not reveal itself for months or years. A retained surgical instrument might go undetected until a follow-up scan. A medication error might cause slow, progressive damage.

RCW 4.16.350 includes a discovery rule: the statute of limitations does not begin to run until the patient discovers, or through the use of reasonable diligence should have discovered, the injury and its cause.

Once that discovery happens, you have one year to file.

Here is how the two rules interact in practice:

• If you knew about the injury right away, the three-year clock applies. You have three years from the date of the negligent act.
• If you did not discover the injury until later, you have one year from the date you discovered (or should have discovered) the injury — but subject to the hard outer limit discussed below.

The "should have discovered" language matters. Courts will not allow you to claim ignorance if the signs of injury were obvious and you simply chose not to investigate. The standard is what a reasonable person would have done under the circumstances.

The Eight-Year Outer Limit

Even with the discovery rule, Washington imposes an absolute outer limit of eight years from the date of the negligent act or omission. After eight years, the door closes — regardless of when you discovered the harm.

This means if a doctor committed malpractice on January 1, 2020, and you did not discover the resulting injury until January 2029, you would be barred from filing. The eight-year cap would have expired on January 1, 2028.

The eight-year limit exists to balance the rights of injured patients against the practical difficulties of litigating claims based on events that occurred many years in the past. Evidence degrades. Memories fade. Witnesses become unavailable. The legislature drew the line at eight years.

Exceptions: When the Clock Pauses or Extends

Minors

Children injured by medical malpractice receive special protection under Washington law. For a minor (anyone under 18), the statute of limitations is tolled — meaning it does not run — until they reach the age of 18.

Once the minor turns 18, the standard deadlines apply. A child injured at birth would generally have until age 21 (three years after turning 18) to file a medical malpractice claim. However, the eight-year outer limit from the date of the act still applies in many situations, which can create complex timing questions for birth injury cases. The interplay between the minority tolling provision and the eight-year cap requires careful legal analysis.

Fraud, Concealment, or Intentional Misrepresentation

If a healthcare provider actively concealed the malpractice or intentionally misrepresented what happened, Washington courts may toll the statute of limitations. The reasoning is straightforward: a defendant should not benefit from hiding their own wrongdoing.

This exception is not easy to prove. You need clear evidence of deliberate concealment, not merely a failure to volunteer information.

Mental Incompetence

If the injured patient is mentally incompetent at the time the cause of action accrues, the statute of limitations may be tolled under Washington's general tolling statute (RCW 4.16.190). The clock pauses until the disability is removed.

No Pre-Filing Notice or Certificate of Merit Required

Some states require plaintiffs to jump through procedural hoops before filing a medical malpractice lawsuit — mandatory pre-suit notice periods, certificates of merit from experts, or both. Washington used to have these requirements. It no longer does.

The Washington Supreme Court struck down the 90-day pre-filing notice requirement (formerly RCW 7.70.100(1)) in Waples v. Yi (2010) and the certificate of merit requirement (formerly RCW 7.70.150) in 2009, ruling both unconstitutional as violations of separation of powers between the legislature and the judiciary.

This means that in Washington, you can file a medical malpractice lawsuit directly — without first notifying the provider or obtaining a certificate from an expert. That said, your attorney will still want expert review of your case before filing, because expert testimony is required to prove the claim at trial. The difference is that the law does not force you to obtain that opinion as a prerequisite to accessing the courts.

The practical takeaway: while you do not face a mandatory waiting period before filing, the statute of limitations is still unforgiving. Do not treat the absence of pre-filing requirements as a reason to delay.

Common Mistakes That Cost People Their Cases

Waiting for the Provider to "Make It Right"

Some patients stay with the provider who harmed them, hoping the situation will be corrected. Meanwhile, the clock runs. Loyalty to a negligent provider is not a reason a court will accept for a late filing.

Confusing the Statute of Limitations With the Statute of Repose

The three-year limitation period and the eight-year outer limit serve different functions. The three-year period is a true statute of limitations (based on when the claim accrues). The eight-year period functions more like a statute of repose (an absolute cutoff regardless of accrual). Confusing the two can lead to catastrophic miscalculations.

Assuming the Clock Starts When You Hire a Lawyer

It does not. The clock starts when the act occurred or when you discovered (or should have discovered) the injury. By the time many people consult an attorney, significant time has already passed.

Not Accounting for Government Entities

If your medical malpractice claim involves a government-operated facility — such as a county hospital or a VA facility — additional notice requirements and shorter deadlines may apply. Claims against government entities in Washington often require a tort claim notice well in advance of filing suit.

Why Timing Is Everything in Medical Malpractice Cases

Medical malpractice claims take time to build properly. Obtaining medical records, having those records reviewed by qualified experts, identifying the specific acts of negligence, calculating damages — none of this happens overnight. Attorneys who handle these cases need months of lead time to prepare a viable claim.

The worst position to be in is knowing you have a strong case but having no time left to prove it.

Act Now — Before Your Deadline Passes

If you received medical care in Olympia or Thurston County and you believe something went wrong, do not wait to find out whether you still have time. Contact an attorney who understands Washington's medical malpractice deadlines and can assess your situation immediately.

Future Legal PLLC represents medical malpractice victims across Thurston County. We will evaluate your timeline, determine whether your claim is still viable, and move aggressively to protect your rights.