Esketamine nasal spray (Spravato) is covered by Medicaid in all 50 states, but getting approved requires prior authorization and meeting strict medical criteria. You will need to show that at least two other antidepressants have already failed before Medicaid will pay for it. The approval process can take days to weeks depending on your state, and the treatment itself involves monitored sessions at a certified clinic, not a take-home prescription.
What Medicaid Requires for Approval
Medicaid programs treat esketamine as a specialty medication, so your provider must submit a prior authorization request proving medical necessity. The core requirement across most states is that you’ve already tried and failed at least two antidepressants from different drug classes, each taken at adequate doses for a minimum of four weeks. The qualifying classes typically include SSRIs, SNRIs, tricyclic antidepressants, and bupropion.
Many states add a third hurdle: you must have also tried augmentation therapy, meaning your doctor added a second medication on top of an antidepressant to boost its effect. Qualifying augmentation agents include atypical antipsychotics approved for depression, lithium, or thyroid hormones, each tried for at least four weeks. South Dakota’s Medicaid criteria lay this out explicitly, and most other state programs follow a similar pattern.
In practical terms, this means most people approved for esketamine have been dealing with treatment-resistant depression for months or years and have a documented trail of medications that didn’t work. If you’ve only tried one antidepressant, you won’t qualify yet.
The Prior Authorization Process
Your prescribing doctor or psychiatrist handles the prior authorization paperwork, not you. They’ll submit a form to your state’s Medicaid program or managed care plan that includes your diagnosis with the correct diagnostic code, a list of every medication you’ve tried for depression (with specific drug names, doses, how long you took each one, and why it failed), and any supporting chart notes or lab results.
California’s Medi-Cal program, for example, requires providers to document up to three prior medications with exact dates of therapy and the specific reason each one failed, whether that was lack of effectiveness, intolerable side effects, or an allergic reaction. Most state programs ask for similar detail. If any of this documentation is missing or vague, the request will likely be denied on the first pass, so it helps to make sure your provider has a complete medication history before they submit.
Turnaround times vary. Some managed care plans respond within 24 to 72 hours for urgent requests, while standard reviews can take up to two weeks. If your request is denied, you have the right to appeal, and your provider can submit additional clinical documentation to support the case.
Pharmacy Benefit vs. Medical Benefit
One detail that creates confusion is how esketamine gets billed. Unlike a typical prescription you’d pick up at a pharmacy, esketamine is administered in a clinical setting under direct supervision. Some Medicaid plans cover it as a pharmacy benefit, others as a medical benefit, and some allow either pathway. This distinction matters because the prior authorization process, the provider who submits the claim, and the billing codes used can all differ depending on which benefit category your plan uses.
When billed as a medical benefit, clinics typically use a general unclassified drug billing code. Your provider’s billing department will know which route your specific Medicaid plan requires, but if you’re having trouble getting coverage, it’s worth asking whether the claim was submitted under the correct benefit type. A claim filed under the pharmacy benefit when your plan processes it as a medical benefit (or vice versa) can result in a denial that has nothing to do with your clinical eligibility.
How Treatment Sessions Work
Esketamine can’t be prescribed for home use. Federal safety requirements mandate that every dose be taken at a certified healthcare setting, with a healthcare provider watching you administer the nasal spray and then monitoring you for at least two hours afterward. During that observation window, staff check your blood pressure, heart rate, and oxygen levels and watch for sedation or dissociative symptoms like feeling detached or spacey.
The clinic itself must be enrolled in a federal safety program and must have a prescriber on site during the entire administration and monitoring period. A monitoring form is submitted after every single session. This infrastructure requirement means not every psychiatrist’s office offers esketamine. You may need to travel to a certified clinic, which can be a practical barrier, especially in rural areas with fewer participating providers.
Treatment typically starts with sessions twice a week for the first month, then drops to once a week or once every two weeks. Each visit takes roughly two and a half to three hours when you account for check-in, dosing, and the mandatory observation period. You’ll need someone to drive you home afterward, as driving isn’t safe on treatment days.
Out-of-Pocket Costs on Medicaid
Medicaid generally has the lowest patient cost-sharing of any insurance type. In most states, Medicaid beneficiaries pay no copay or a nominal copay (often $1 to $3) for covered medications, including specialty drugs like esketamine. Some states charge no copays at all for behavioral health treatments. The exact amount depends on your state and whether you’re in a managed care plan or fee-for-service Medicaid.
The bigger financial consideration is indirect. The twice-weekly sessions during the first month require significant time, transportation, and potentially lost wages. Medicaid may cover transportation to medical appointments through non-emergency medical transportation benefits, which is worth looking into if getting to a certified clinic is a challenge.
What to Do If You’re Denied
Denials are common on the first attempt, often because of incomplete documentation rather than true ineligibility. If your prior authorization is denied, ask your provider’s office for the specific reason listed on the denial letter. Common fixable issues include missing dates for previous medication trials, not documenting a high enough dose of a prior antidepressant, or failing to include evidence of augmentation therapy.
Your provider can resubmit with additional documentation or file a formal appeal. You also have the right as a Medicaid beneficiary to request a fair hearing through your state’s Medicaid agency if you believe coverage was wrongly denied. In urgent situations, some states offer expedited review processes that can return a decision within 24 to 72 hours.
If your area lacks a REMS-certified clinic, that’s a different kind of barrier. Ask your prescriber whether any nearby health systems or academic medical centers have enrolled in the program, as availability has been expanding steadily since the drug’s approval in 2019.