Prior Authorization Denials as Severity Evidence: A Clinical Pearl for PI Attorneys

Amar Lunagaria — Co-Founder & Chief Pharmacist, LienScripts | March 4, 2026 | 8 min read

Insurance prior authorization denials paradoxically serve as evidence of injury severity. When a prescriber fights through the PA process for a specific medication, it documents that cheaper alternatives were insufficient and that the patient's condition requires advanced pharmacotherapy.

A prior authorization denial from a health insurance company is not just an administrative obstacle -- it is documentary evidence that the treating physician determined a specific, often more advanced medication was medically necessary for the plaintiff's condition. When the prescriber submits a prior authorization request, appeals a denial, and ultimately obtains approval (or switches to an alternative), every step in that process generates records that document treatment complexity and injury severity in ways that routine prescriptions do not.

• Prior authorization denials create a paper trail showing that the prescriber considered the patient's condition severe enough to warrant non-formulary or specialty medications
• The PA process documents that formulary alternatives (typically cheaper, first-line agents) were clinically insufficient for the plaintiff's injury
• LienScripts tracks prior authorization events through its platform, and each case receives a MERIT (Medication Evaluation & Rationale for Injury Treatment) report that contextualizes PA denials within the treatment narrative
• PA denials and appeals demonstrate physician advocacy for the plaintiff's clinical needs -- objective evidence that the injury requires aggressive treatment
• Defense counsel cannot argue that treatment is excessive when insurance itself required clinical justification before approving the medication

What Prior Authorization Reveals About Injury Severity

Prior authorization exists because health insurers require prescribers to justify the use of certain medications before they will cover them. Medications requiring PA are typically non-formulary, brand-name, specialty, or higher-tier drugs that the insurer deems more expensive or more potent than first-line alternatives. When a prescriber requests PA, they are formally certifying that the patient's condition requires this specific medication because standard alternatives are inadequate.

As Amar Lunagaria, PharmD, LienScripts' Chief Pharmacist explains, "A prior authorization request is a prescriber going on the record that this patient needs a specific drug -- not the generic, not the formulary alternative, but this medication. That clinical determination, documented in the PA submission, is evidence that the plaintiff's condition is beyond what standard treatment can manage. Every PI attorney should be requesting PA documentation for their cases."

The Clinical Justification Letter

The most valuable document in a PA process is the clinical justification letter the prescriber submits to the insurer. This letter typically includes:

• The patient's diagnosis and clinical history
• Medications previously tried and failed
• Specific reasons why the requested medication is necessary
• Clinical evidence supporting the medication choice

This letter is a real-time clinical assessment written by the treating physician, not for litigation purposes, but for insurance purposes. It is therefore immune to the defense argument that medical documentation was created to inflate a claim.

PA Denials as Treatment Failure Documentation

Step Therapy Failures

Many PA denials require "step therapy" -- the patient must first try and fail on one or more cheaper medications before the insurer will approve the requested drug. When step therapy is required, the resulting documentation shows:

1. The plaintiff tried Medication A (the formulary option)
2. Medication A was clinically insufficient -- documented by the prescriber
3. The plaintiff then tried Medication B (a second-line option)
4. Medication B was also insufficient
5. Only then was the requested Medication C approved

This stepped failure documentation is a chronological record of treatment escalation that objectively demonstrates the plaintiff's condition is difficult to treat and resistant to standard interventions. It directly supports arguments about injury severity and treatment complexity.

Quantity Limit Overrides

Insurance companies impose quantity limits on many medications, particularly pain medications and controlled substances. When a prescriber requests a quantity override -- more pills per month than the standard allowance -- they must document why the standard quantity is insufficient. A successful quantity override means the prescriber convinced the insurer that the plaintiff's pain requires more medication than the average patient receives. This is severity evidence.

Pharmacy Records Capture the PA Timeline

While the PA process generates documentation at the prescriber's office and the insurance company, it also generates records at the pharmacy. When a pharmacy submits a claim and receives a PA rejection, that rejection is logged in the pharmacy system with a timestamp and rejection code. The subsequent resubmission, approval, and eventual fill are also logged.

LienScripts captures this complete timeline. The MERIT report includes PA-related delays and their resolution, showing adjusters and juries that medication access was not straightforward -- that the plaintiff's injury required fighting through insurance bureaucracy to obtain necessary treatment.

Using PA Evidence in Demand Packages

PA documentation should be included in every demand package where it exists:

1. The initial PA denial -- showing that standard coverage did not apply to the plaintiff's medication needs
2. The prescriber's clinical justification -- documenting why the specific medication was necessary
3. Any appeal documentation -- showing the prescriber fought for the medication, not just accepted the denial
4. The eventual approval or alternative -- documenting the outcome of the PA process
5. The fill date after PA resolution -- showing the delay in treatment access caused by the PA process

The treatment delay itself is a damages element. A plaintiff who waited two weeks for PA approval while in unmanaged pain suffered additional harm because insurance bureaucracy prevented timely medication access.

Why This Evidence Is Powerful

PA evidence is powerful precisely because it was not created for litigation. The prescriber submitted the PA request because they believed the medication was medically necessary. The insurer required clinical justification because the medication exceeds standard formulary coverage. Neither party was thinking about the lawsuit when these documents were generated.

This makes PA documentation some of the most credible evidence in a MERIT report. It is contemporaneous, clinically generated, and created for regulatory rather than litigation purposes. Defense counsel faces an uphill battle challenging records that even the plaintiff's own insurance company required before authorizing treatment.

Practical Takeaways

Every prior authorization event in a plaintiff's treatment history is an opportunity to demonstrate injury severity, treatment complexity, and the inadequacy of standard interventions. Attorneys should request PA documentation from the prescriber's office, the pharmacy, and the insurer. LienScripts generates a MERIT (Medication Evaluation & Rationale for Injury Treatment) report for every case, providing pharmacist-signed documentation for demand packages that contextualizes PA events within the broader treatment narrative.

Related Resources

• What Is a MERIT Report? -- Understanding the pharmacist-authored clinical summary
• Medication Switches Prove Treatment Failure -- Using medication changes as evidence of treatment complexity
• Insurance Denial and Medication Access -- How pharmacy liens solve insurance coverage gaps