Qualifying for ketamine treatment typically requires a documented history of conditions that haven’t responded to standard therapies, plus medical screening to rule out safety risks. The path differs depending on whether you’re pursuing the FDA-approved nasal spray (esketamine) or off-label IV ketamine infusions, but both share a common thread: you generally need to show that conventional treatments haven’t worked.
The Two Main Paths to Ketamine Treatment
There’s an important distinction between the two forms of ketamine therapy available today. Esketamine (brand name Spravato) is an FDA-approved nasal spray with specific, defined criteria for qualifying. IV ketamine infusions, on the other hand, are prescribed off-label by individual clinicians who set their own qualifying standards based on clinical judgment and emerging evidence. The qualifying process, cost, and insurance picture look different for each.
Esketamine is approved for two specific uses in adults: treatment-resistant depression (TRD) and depressive symptoms in people with major depressive disorder who have acute suicidal ideation or behavior. It is not approved for children or adolescents. IV ketamine clinics treat a broader range of conditions, including chronic pain, PTSD, anxiety disorders, and OCD, though none of these uses carry FDA approval.
What “Treatment-Resistant Depression” Actually Means
The FDA defines treatment-resistant depression as a failure to respond to two or more antidepressant regimens, each taken at an adequate dose for an adequate duration. This is the single most common qualifying standard, and insurance companies hold you to it strictly. Aetna’s policy, which is representative of major insurers, requires that those two failed antidepressants come from at least two different drug classes with different mechanisms of action, each used at the maximum tolerated dose for at least eight weeks, within the past five years.
Your depression also needs to be documented as severe using a standardized rating scale. Clinicians typically use tools like the Hamilton Depression Rating Scale or the Montgomery-Asberg Depression Rating Scale to establish a baseline score. If your scores don’t meet the threshold for severe depression, coverage is unlikely even if you meet the medication history requirements.
For the second approved use, major depression with acute suicidal ideation, the bar is different. The prescriber essentially needs to certify that without the medication, you would require hospitalization in a psychiatric facility within 24 to 48 hours. This pathway is less common and typically initiated in a crisis setting rather than through a standard outpatient referral.
Qualifying for Off-Label IV Ketamine
Private ketamine clinics operate with more flexibility. Since IV ketamine is prescribed off-label, the qualifying criteria are set by the treating provider rather than the FDA. That said, reputable clinics follow similar principles: they want to see that you’ve tried and failed standard treatments before turning to ketamine.
For PTSD, research protocols have required symptoms persisting for at least three months, a formal diagnosis using a clinician-administered assessment, and stable medication doses for at least six weeks before starting treatment. For chronic pain, study criteria have defined this as pain lasting at least six months. Most clinics apply comparable standards, though the specifics vary. If you’re currently in psychotherapy, clinics generally expect your therapy schedule to be stable rather than newly started.
The practical difference is that off-label ketamine doesn’t require insurance approval, which means no prior authorization paperwork and no mandatory number of failed medications. But it also means you’re almost certainly paying out of pocket, and you’ll need to rely on the clinic’s own screening to determine whether you’re a good candidate.
Medical Conditions That Disqualify You
Regardless of which form of ketamine you’re pursuing, certain health conditions will rule you out. According to the American Psychiatric Nurses Association, the standard exclusions include:
- Active substance abuse, including alcohol, cannabis, and non-prescribed medications
- History of psychosis or bipolar disorder with psychotic features
- Uncontrolled high blood pressure, since ketamine raises blood pressure during treatment
- Unstable cardiovascular disease
- Current pregnancy
- History of increased intracranial pressure
- Previous negative response to ketamine
Blood pressure is a particularly common sticking point. Ketamine causes a temporary spike in blood pressure, so your provider will check it before every session. If your hypertension is well-controlled with medication, you may still qualify. If it’s uncontrolled, you won’t until it’s managed. Research protocols have also excluded people with certain heart rhythm abnormalities, kidney problems, and active eating disorders.
What the Screening Process Looks Like
Most clinics start with a phone or video consultation where they review your psychiatric history, current medications, and treatment goals. You’ll typically need to provide records showing which medications you’ve tried, at what doses, and for how long. If you don’t have these records handy, your prescribing psychiatrist or primary care doctor can usually supply them.
The in-person intake generally includes a review of your full medical history, current vital signs (especially blood pressure), and a structured assessment of your symptoms using a standardized scale. Some clinics require lab work or a physical exam, particularly if you have cardiovascular risk factors. For esketamine specifically, the provider must verify you’re enrolled in a special FDA safety program before treatment can begin.
If you’re on psychiatric medications, you won’t be asked to stop them. Both esketamine and IV ketamine are typically used alongside your existing antidepressant. Clinics do want your medication regimen to be stable, meaning no recent changes in the weeks before starting.
What to Expect During Treatment Sessions
Ketamine treatment isn’t a single appointment. The initial phase, called induction, involves six to eight sessions, typically spread across two to four weeks. After that, maintenance sessions are spaced further apart, often about every three weeks. For esketamine, you self-administer the nasal spray under direct supervision in a certified healthcare setting. For IV infusions, you sit in a reclining chair while the medication is delivered over roughly 40 minutes.
Every session requires a mandatory two-hour observation period afterward. During this time, staff monitor your blood pressure (typically checking around 40 minutes post-dose, when levels peak) and watch for side effects like sedation or dissociation. You cannot drive yourself home. This observation requirement is non-negotiable for the FDA-approved version and standard practice at IV clinics.
Insurance Coverage and Cost
Esketamine is the only form with a realistic chance of insurance coverage, and even that requires prior authorization. Your provider will need to submit documentation of your diagnosis with standardized severity scores, a detailed list of failed medication trials meeting the dose and duration requirements, and a treatment plan. Expect this process to take days to weeks, and be prepared for an initial denial that requires appeal.
IV ketamine infusions are rarely covered by insurance. Individual sessions typically cost several hundred dollars, and the full induction course of six to eight sessions represents a significant out-of-pocket expense. Some clinics offer payment plans, and a few will submit claims to insurance on your behalf, but reimbursement is uncommon.
If cost is a barrier, starting with the esketamine route through a psychiatrist who can navigate the prior authorization process is generally the most financially practical approach, assuming you meet the treatment-resistant depression criteria.
Age Considerations
Esketamine is approved only for adults and has no pediatric approval. IV ketamine as an anesthetic is considered safe across a wide age range starting from infancy, but its use for psychiatric conditions in people under 18 is limited and not well studied. Most private ketamine clinics treat adults only. Older adults can receive ketamine but may need lower doses, since the body processes the drug more slowly with age. Providers will typically screen older patients more carefully for cardiovascular risks before approving treatment.