Step Therapy Exception Rights: How to Override Fail-First Drug Requirements by State

Step therapy — also called "fail-first" — is an insurance practice requiring patients to try and fail one or more cheaper drugs before the insurer will cover the medication a doctor actually prescribed. For many patients, especially those with complex or chronic conditions, step therapy can mean weeks or months of unnecessary suffering, side effects, and disease progression while trying treatments that are unlikely to work.

The good news: most states and federal law have enacted step therapy exception rights. Here's what they are and how to use them.

What Is Step Therapy?

When a physician prescribes a specific medication, the insurer may require the patient to first try a formulary alternative — typically a cheaper generic or a competitor's drug. Only after the patient has "failed" the alternative drug (meaning it didn't work or caused intolerable side effects) will the insurer cover the originally prescribed medication.

While step therapy has a legitimate rationale in some contexts, it can cause real harm when:

• The patient has already tried the required drugs and failed them (before this insurance plan)
• The required drug is clinically inappropriate for the patient's specific condition or genetics
• The patient's condition is severe enough that a delay in effective treatment causes serious harm
• The patient previously had coverage for the drug without step therapy requirements

Federal Step Therapy Rules (Medicare Advantage)

For Medicare Advantage plans, CMS (Centers for Medicare & Medicaid Services) issued final guidance in 2019 establishing step therapy exception standards. Medicare Advantage plans offering step therapy for Part B drugs must:

• Establish a clear, accessible exceptions process
• Make a decision on a standard exception request within 72 hours
• Make a decision on an urgent exception request within 24 hours
• Grant an exception when any of the following criteria are met:
  • The required drug was ineffective in treating the enrollee's condition previously
  • The required drug is likely to be ineffective based on the enrollee's clinical history or medical characteristics
  • The required drug would cause an adverse reaction or other harm to the enrollee
  • The enrollee is stable on the requested drug (continuity of care protection)

State Step Therapy Exception Laws

As of early 2026, the majority of states have enacted step therapy exception laws for state-regulated health plans. While the specific criteria and timelines vary, most state laws include the same core grounds for exception:

Universal grounds accepted in most states:

1. The patient previously tried and failed the required drug
2. The required drug is contraindicated or likely to cause adverse effects
3. The required drug is clinically inappropriate given the patient's diagnosis, condition, or clinical history
4. The patient is clinically stable on the prescribed drug (previously covered)
5. A peer-reviewed clinical study, evidence-based guideline, or the FDA label supports avoiding the required drug for this patient

States with strong step therapy protections:

• Texas (SB 680, 2021): Standard exception within 72 hours, urgent within 24 hours. Exceptions required for any of the above grounds.
• California (AB 374, 2017): Exceptions required within 72 hours standard, 24 hours urgent. Clinical exception for failure, contraindication, or clinical appropriateness.
• New York (2016, 2022 updates): Among the strongest state laws. Insurers must grant exceptions when the required drug is contraindicated, has been tried and failed, or when the prescriber determines it is not clinically appropriate.
• Florida (SB 394, 2023): Standard 3-day decision, urgent 1-day decision. Five grounds for exception including stability on current drug.
• Virginia, Pennsylvania, Ohio, Illinois, Michigan, Colorado, Massachusetts and 30+ additional states: Each has varying but meaningful step therapy exception protections.

States with limited or no state step therapy law: Wyoming, Mississippi, Idaho, North Dakota, and a few others lack comprehensive step therapy exception statutes. Patients in these states must rely on federal law (for Medicare Advantage), ERISA regulations (for employer plans), and plan terms.

How to Request a Step Therapy Exception

Step 1: Review your denial letter. It should state specifically which step drug you are required to try first and the basis for the step therapy requirement.

Step 2: Identify applicable grounds. Look at the four universal grounds above. Which one applies to your situation? Has the patient already tried the required drug? Is it contraindicated? Is the patient currently stable on the prescribed drug?

Step 3: Have your prescribing physician document the exception grounds. Most insurers require a physician statement supporting the exception. The statement should specifically address one or more exception grounds. Example:

"I am requesting a step therapy exception for [patient name] for [medication name]. [Patient] previously failed [required drug name] from [date to date], experiencing [describe outcome or adverse effect]. Continuing to require [patient] to retry a drug that has already been unsuccessful would delay effective treatment and risk [describe clinical consequences]. I am requesting an expedited exception review."

Step 4: File the exception request in writing. Send to the insurer's pharmacy department or the address listed in the denial. Note the applicable state law or federal regulation by name.

Step 5: Request an expedited decision if appropriate. For urgent situations (e.g., active cancer treatment, psychiatric condition, serious disease management), request a 24-hour expedited review. State that delay could cause irreversible harm.

Step 6: Appeal if denied. If the exception is denied, the standard internal appeal process applies. For state-regulated plans, a denial of a valid exception grounds may also be subject to complaint with the state insurance department.

Using Previous Drug Coverage as Evidence

One of the strongest grounds for a step therapy exception is proving that you previously had coverage for the requested drug — meaning an insurer already evaluated and approved it — and that you are currently stable on it. Gather:

• Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization approval letters from previous insurers
• Pharmacy records showing you have been filling and taking the medication
• A physician statement confirming stability and clinical response

Insurers are increasingly required by state and federal law to honor continuity of care when a patient is stable on a medication.

Fight Back With ClaimBack

Step therapy exceptions are winnable. ClaimBack helps you generate a targeted exception request and appeal letter that cites the specific grounds applicable to your situation under your state's law.

Start your appeal at ClaimBack

Related Reading

• What Is Medical Necessity?
• Common Reasons Insurance Claims Are Denied
• How to Write an Insurance Appeal Letter