Medical Debt Statute of Limitations in Washington

Last verified 2026-07 · Source: RCW 4.16.040 ✓ verified · 3 sources

The deadline

6 years

from Date of last service or date debt accrues — when payment first becomes due, under RCW 4.16.040.

If you're researching medical debt collection in Washington, the single most important number is 6 years. That's how long RCW 4.16.040 gives you to sue over unpaid medical bills, counted from Date of last service or date debt accrues — when payment first becomes due. File even one day late and the court will almost certainly dismiss the case, no matter how strong it is.

Washington Deadlines for Related Claims

Claim type	Deadline	Statute
Medical Debt	6 years	RCW 4.16.040
Car Accident	3 yrs	Wash. Rev. Code § 4.16.080
Credit Card Debt	6 yrs	RCW 4.16.040(1)-(2)
Medical Malpractice	3 yrs	RCW 4.16.350
Wrongful Death	3 yrs	Wash. Rev. Code § 4.16.080(2)
Personal Injury	3 yrs	Wash. Rev. Code § 4.16.080(2)
Dog Bite	3 yrs	RCW § 16.08.040; SOL: RCW § 4.16.080
Slip and Fall	3 yrs	Wash. Rev. Code § 4.16.080(2)
Defamation	2 yrs	Wash. Rev. Code § 4.16.100
Breach of Contract	6 yrs	RCW 4.16.040

When the Clock Starts

In Washington, the limitations period for medical debt collection generally begins on Date of last service or date debt accrues — when payment first becomes due. Washington does not apply a general discovery rule to this claim type — the date of the event controls, which makes early action critical.

Exceptions That Can Extend the Deadline

Minors: the clock is generally paused while the injured person is under 18.
Fraudulent concealment: if the defendant actively hid the wrongdoing, the deadline may be extended until it was or should have been uncovered.
Defendant leaves the state: absence can pause the clock in many circumstances.

Washington RCW 4.16.040 establishes a 6-year limitation for written contracts and liabilities arising out of written agreements. Medical bills accompanied by signed patient financial responsibility agreements are treated as written contracts subject to this 6-year period. Note: medical malpractice has a separate 3-year period under RCW 4.16.350 — that is distinct from unpaid medical debt. Minor tolling: RCW 4.16.190.

Source: RCW 4.16.040, official Washington statute · verified 2026-07

What to Do Before the Deadline Runs

Pin down your accrual date — the day the clock started — and calendar the deadline conservatively.
Preserve evidence now: photos, records, witness contacts, bills. Evidence decays faster than deadlines.
Send preservation/notice letters where required (especially for Washington government defendants).
If the deadline is inside 6 months, treat it as urgent — filing suit is the only reliable way to stop the clock.

How Washington Compares to Nearby States

State	Deadline	Statute
Washington	6 years	RCW 4.16.040
Idaho	5 yrs	Idaho Code § 5-216
Oregon	6 yrs	Or. Rev. Stat. § 12.080(1)

Frequently Asked Questions

How long do I have to sue over unpaid medical bills in Washington?

You have 6 years from Date of last service or date debt accrues — when payment first becomes due, under RCW 4.16.040.

Can I still sue after 6 years in Washington?

Usually no — courts dismiss claims filed after the statute of limitations expires. Narrow exceptions (tolling for minors, fraudulent concealment) can extend the deadline; whether one applies depends on your facts.

What if the victim was a minor?

Washington generally pauses ("tolls") the deadline while the injured person is under 18, giving them time to file after reaching adulthood. Special limits can still apply, so check the statute.

Sources

Official RCW 4.16.040 – Actions Limited to Six Years (Washington State Legislature)
Corroborating RCW 4.16.040 (2024) – Justia
Corroborating RCW 4.16.040 – FindLaw
Verified 2026-07 under our 4-step process — every line checked against the sources above. How we verify

This page is legal information, not legal advice. Deadlines have exceptions that depend on your facts — confirm with a licensed Washington attorney.