How to appeal a denial from Kaiser Permanente

UPDATED JULY 2026 · U.S. PLANS · NOT LEGAL OR MEDICAL ADVICE

Kaiser Permanente is an integrated system — the insurer and the medical group are part of the same organization, operating in California and several other states plus D.C. Appeals go through Kaiser member services, and because most members are in California, the state's Independent Medical Review (IMR) through the DMHC is a powerful second step there.

How appeals work at Kaiser Permanente

• File the appeal (Kaiser calls many of these grievances) through kp.org, by phone with Member Services, or in writing per your denial letter — the letter states the deadline that applies to your plan.
• Because your doctors and the plan are one organization, ask your treating Kaiser physician to document medical necessity in the chart — internal reviewers read it.
• California members: after the internal process (or immediately for urgent cases), you can request Independent Medical Review through the DMHC — it's free, independent, and binding on the plan.
• Members outside California have equivalent external-review rights through their state's process or the federal process; the denial letter names the right one.

The deadlines that apply to nearly every Kaiser plan

• At least 180 days to file the internal appeal from the date on the denial notice (non-grandfathered plans; the date printed on your letter controls).
• The plan must decide within about 30 days for care you haven't received yet, and about 60 days for care already received.
• Urgent case? Ask for an expedited appeal — a decision in roughly 72 hours when a physician confirms that waiting endangers your health.
• After the final internal denial: you can request independent external review — generally within about 4 months, per your letter.
• Employer self-funded plan? ERISA rules apply: state programs and regulators generally don't, and external review runs through the federal process. Your letter or HR can confirm the funding type.

Federal sources: HealthCare.gov internal appeals and HealthCare.gov external review. Your denial notice and plan documents control when they differ.

Best next reads: “Not medically necessary” denials and External review, explained — and decode any codes on the letter in the denial-code library.

Common questions

How do I appeal a Kaiser Permanente denial in California?

Start with Kaiser's internal grievance/appeal via kp.org or Member Services. If the denial stands — or immediately in urgent cases — request Independent Medical Review (IMR) from the California DMHC. IMR is free, decided by independent physicians, and binding on Kaiser.

Is a Kaiser grievance the same as an appeal?

Kaiser uses 'grievance' broadly, but disputing a coverage or medical-necessity decision is an appeal of an adverse benefit determination and preserves your external-review rights. Say explicitly that you are appealing the denial and want it reviewed.