Medical Debt Statute of Limitations in California

Last verified 2026-07 · Source: Cal. Code Civ. Proc. § 337 ✓ verified · 3 sources

The deadline

4 years

from Date of breach; for medical debt, typically date of last service or date payment was first demanded. California's discovery rule may extend the start date if the cause of action was not reasonably discoverable., under Cal. Code Civ. Proc. § 337.

Under Cal. Code Civ. Proc. § 337, you have 4 years from Date of breach; for medical debt, typically date of last service or date payment was first demanded. California's discovery rule may extend the start date if the cause of action was not reasonably discoverable. to sue over unpaid medical bills in California. Miss it and you lose the right to sue — but several California-specific exceptions can extend (or shorten) that window, detailed below.

California Deadlines for Related Claims

Claim type	Deadline	Statute
Medical Debt	4 years	Cal. Code Civ. Proc. § 337
Car Accident	2 yrs	Cal. Code Civ. Proc. § 335.1
Credit Card Debt	4 yrs	Cal. Civ. Proc. Code § 337(a)
Medical Malpractice	3 yrs	Cal. Code Civ. Proc. § 340.5
Wrongful Death	2 yrs	Cal. Civ. Proc. Code § 335.1
Personal Injury	2 yrs	Cal. Code Civ. Proc. § 335.1
Dog Bite	2 yrs	Cal. Civ. Code § 3342 (strict liability); SOL: Cal. Code Civ. Proc. § 335.1
Slip and Fall	2 yrs	Cal. Civ. Proc. Code § 335.1
Defamation	1 yr	Cal. Code Civ. Proc. § 340(c)
Breach of Contract	4 yrs	Cal. Code Civ. Proc. § 337

When the Clock Starts

In California, the limitations period for medical debt collection generally begins on Date of breach; for medical debt, typically date of last service or date payment was first demanded. California's discovery rule may extend the start date if the cause of action was not reasonably discoverable.. California recognizes a discovery rule for this claim type: California broadly applies the discovery rule. The 4-year SOL does not begin until the plaintiff discovers, or through the exercise of reasonable diligence should have discovered, the cause of action. For medical debt this is usually when the bill was received or payment demanded.

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.
Government-claim trap: For government-owned hospitals, the California Government Claims Act (Gov. Code § 945.4) requires filing a government claim within 6 months of the accrual date. Failure to file timely bars any lawsuit.

California medical debt is most often governed as a written contract (4 years under CCP § 337) when a written admission or financial-responsibility agreement was signed. Without a written contract, the oral-contract SOL under CCP § 339 is 2 years. CCP § 337 explicitly bars suit, arbitration, or any legal proceeding to collect a debt once the SOL has run. California SB 1061 (2022) prohibits medical debt from being included in consumer credit reports, but does not shorten the collection SOL.

Source: Cal. Code Civ. Proc. § 337, official California 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 California 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 California Compares to Nearby States

State	Deadline	Statute
California	4 years	Cal. Code Civ. Proc. § 337
Oregon	6 yrs	Or. Rev. Stat. § 12.080(1)
Nevada	6 yrs	NRS § 11.190(1)(b)
Arizona	6 yrs	A.R.S. § 12-548

Frequently Asked Questions

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

You have 4 years from Date of breach; for medical debt, typically date of last service or date payment was first demanded. California's discovery rule may extend the start date if the cause of action was not reasonably discoverable., under Cal. Code Civ. Proc. § 337.

Can I still sue after 4 years in California?

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

Does the discovery rule apply to medical debt collection in California?

Yes. California broadly applies the discovery rule. The 4-year SOL does not begin until the plaintiff discovers, or through the exercise of reasonable diligence should have discovered, the cause of action. For medical debt this is usually when the bill was received or payment demanded.

What if the victim was a minor?

California 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.

Is the deadline different for claims against the government?

For government-owned hospitals, the California Government Claims Act (Gov. Code § 945.4) requires filing a government claim within 6 months of the accrual date. Failure to file timely bars any lawsuit.

Sources

Official Cal. Code Civ. Proc. § 337 - California Legislative Information Official
Corroborating California Code of Civil Procedure § 337 Written Contract Four Years - Justia US Law
Corroborating Cal. Code Civ. Proc. § 337 - 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 California attorney.