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Timely filing · California HMO

Kaiser Permanente timely filing limit

Short answer

The Kaiser Permanente timely filing limit in California is 90 calendar days, counted from the date of service or the discharge date. Kaiser Foundation Health Plan's 2026 Northern California HMO Provider Manual and its 2026 claims settlement notice set that window for Northern and Southern California unless your agreement or the law sets another period.

A claim denied as late can still be accepted through a provider dispute, which has to reach KP within 365 calendar days of its action on the claim. If you are not contracted, California's claims settlement regulation bars a plan from setting a deadline under 180 days after the date of service. Compare other payers in the timely filing limits table.

Last reviewed by the Remitwright billing team. Editorial policy

  • Verified October 30, 2026

The windows

Initial claim
90 calendar days from the date of service or discharge (Northern and Southern California), unless your agreement or the law sets a different period2
Counted from
The date of service, or the discharge date for an inpatient stay. A corrected claim for missing information counts from the date of the original Remittance Advice, COB information from the date of the primary carrier's EOB, and a provider dispute from KP's most recent action on the claim.
Appeal
365 calendar days from KP's action on the claim (the most recent one, if there were several), or from the end of KP's time to contest or deny when it took no action
Corrected claim
In California, the same limit as the original claim, counted from the date of the original Remittance Advice, unless the correction notice or your agreement gives another timeframe. Bill frequency code 7 with the original KP claim number.
Verified
, against the payer document in the sources

Your participation agreement can set a different window. Where the contract and the manual disagree, the contract applies.

Worked example · hypothetical

A visit on Monday, March 2, 2026

Counting 90 days forward from a date of service of Monday, March 2, 2026 gives Sunday, May 31, 2026. That is the last day to file under the first limit shown above; a claim filed after it is outside the window unless one of the exceptions below applies.

Exceptions the payer allows

Good cause for a late claim

KP's manual says a claim denied for missing the deadline may still be accepted and adjudicated through the provider dispute process. California's regulation requires a plan to accept and adjudicate it when your dispute shows good cause for the delay.

KP is the secondary payer

In California, send the COB information within 90 calendar days from the date of the primary carrier's EOB, unless your agreement says otherwise. The regulation does not let a plan set a secondary-claim deadline shorter than 90 days from the primary payer's payment, denial or notice.

You are not contracted with KP

KP's provider manual is written for contracted providers. California's claims settlement regulation does not allow a plan to set a filing deadline shorter than 180 days after the date of service for a non-contracted provider.

Your agreement or the correction notice sets the timeframe

A different submission period in your agreement, or one required by law, replaces the 90 days. When KP returns a claim for correction, the notice states the timeframe, and without one the timely filing limit in your agreement applies.

What counts as proof of timely filing

  • The 277CA acknowledgement KP sends through your clearinghouse for each EDI claim, showing whether it was accepted or rejected
  • KP's acknowledgement of a paper claim, which the claims settlement notice says is sent within 15 working days of receipt
  • For a secondary claim, the primary carrier's EOB, whose date starts the 90-day COB window
  • For a late claim, a Provider Dispute Notice that documents good cause for the delay

Notes for billers

  • KP's manual and claims settlement notice do not list documents accepted as proof of timely filing. Providers are responsible for reviewing their clearinghouse acknowledgement reports, so keep the 277CA for every claim and resubmit rejected ones electronically.
  • Other KP regions run different clocks. A corrected claim for missing information is due within 90 calendar days in Colorado and 365 calendar days in Georgia, Hawaii, the Mid-Atlantic States and the Northwest, and outside California COB information is due within 12 months of the request for commercial claims or 24 months for Medicare and Medicaid.
  • A dispute missing required information is returned. Send the amended dispute within 30 business days of KP's notice, and never later than 365 calendar days from KP's last action. KP acknowledges disputes within 15 business days on paper or 2 business days online and sends a determination within 45 business days.
  • Send a replacement claim only after the original is paid, denied or otherwise finalized, with the original claim number from the 835 or the EOP. A replacement without a valid original claim number is rejected.
  • Balance billing KP members for covered services is prohibited by state and federal law and by your agreement. Members owe only their copayments, coinsurance and deductibles.

Next step

Claims that age toward a filing limit are caught by A/R follow-up, worked by date, oldest first.

See A/R follow-up

FAQ

Questions about Kaiser Permanente deadlines

What is the Kaiser Permanente timely filing limit in California?

90 calendar days, counted from the date of service or the discharge date, for Northern and Southern California, unless your agreement or the law sets another period. KP follows the Knox-Keene Act, Medicare or Medi-Cal requirements as they apply to the claim.

Can KP still accept a claim I filed after 90 days?

Possibly, through a provider dispute. KP's manual says a claim denied as late may be accepted and adjudicated, and California's regulation requires the plan to do so when your dispute shows good cause for the delay.

How long do I have to dispute a Kaiser claim decision?

365 calendar days from KP's action on the claim, or from its most recent action if there were several. If KP never acted, the 365 days run from the end of its time to contest or deny the claim. Your agreement or the law can allow longer.

When is COB information due when KP is secondary?

In California, within 90 calendar days from the date of the primary carrier's EOB, unless your agreement says otherwise. Outside California the manual gives 12 months from the request for commercial claims.

Does a non-contracted provider get 90 days too?

California's claims settlement regulation does not let a plan set a deadline shorter than 180 days after the date of service for a non-contracted provider. The 90-day window applies to contracted providers.

Next step

Claims with Kaiser Permanente aging out?

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Step 1 of 3

What do you bill for?

A little about your volume
How many providers? (Medical practice)

Trips per month? (NEMT)

Active clients? (Home care / home health)

Orders per month? (DME)

How many clinicians? (Behavioral health / therapy)

Claims per month, roughly? (Something else)

What's the biggest problem right now?

Where should we send the review?

Add details (optional)

We work inside your system; this tells us which login to ask for.

Please don't include patient information in this form.

  • No patient data requested
  • No obligation
  • Reply in writing

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