Medical Necessity in Personal Injury Cases: How Pharmacy Clinical Narratives Strengthen Your Claim

Amar Lunagaria — Co-Founder & Chief Pharmacist, LienScripts | February 17, 2025 | 10 min read

Medical necessity is the battleground where pharmacy liens are won or lost. Learn how pharmacist-signed clinical narratives establish necessity and defend medication costs in settlement negotiations.

Medical Necessity in Personal Injury Cases: How Pharmacy Clinical Narratives Strengthen Your Claim

In personal injury litigation, two words can make or break the recovery of pharmacy costs: medical necessity. Every dollar your client spent on prescriptions — every muscle relaxant, every anti-inflammatory, every nerve pain medication — must be defensible as medically necessary to survive scrutiny from insurance adjusters, defense counsel, and in some cases, judges and juries.

Yet medical necessity is one of the most poorly documented aspects of many personal injury cases. Attorneys who understand how to establish, document, and leverage medical necessity for pharmacy costs will consistently achieve better outcomes for their clients.

This guide explores the medical necessity challenge, the difference between standard pharmacy records and clinical narratives, and how the POGOS Report gives attorneys a powerful tool for defending every prescription on their client's treatment timeline.

[!KEY] Standard pharmacy records show what was dispensed and what it cost — a pharmacist-signed clinical narrative explains why it was necessary, connecting each prescription to the injury and anticipating the defense challenges before they are raised.

The Medical Necessity Challenge

What Is Medical Necessity?

Medical necessity is both a clinical standard and a legal concept. At its core, it means that a treatment, service, or medication is:

• Clinically appropriate for the patient's diagnosed condition
• Consistent with accepted standards of care in the relevant medical community
• Not primarily for the convenience of the patient, provider, or payer
• The most appropriate level of service that can safely be provided

In the personal injury context, medical necessity has an additional dimension: the treatment must be causally related to the accident or injury at issue. A medication can be clinically appropriate in a general sense but still be challenged if the defense argues it's unrelated to the accident.

Why Medical Necessity Gets Challenged

Insurance adjusters and defense attorneys challenge medical necessity for a straightforward reason: every successfully challenged line item reduces the settlement or verdict amount.

Common challenges include:

• "The medication was prescribed too long." Adjusters argue that 6 months of a muscle relaxant exceeds the normal recovery period for the alleged injury.
• "A cheaper alternative was available." The defense questions why a brand-name medication was prescribed when a generic existed.
• "The medication isn't consistent with the diagnosis." An adjuster unfamiliar with off-label prescribing patterns questions why an antidepressant was prescribed for nerve pain.
• "There's no documentation supporting the prescription." This is the most damaging challenge — when there's simply no clinical reasoning on the record explaining why each medication was needed.

The Documentation Gap

Here's the uncomfortable truth: most prescribers document enough to satisfy clinical standards, but not enough to satisfy litigation standards. A doctor's chart note might read:

"Patient reports continued neck pain and spasm. Refill cyclobenzaprine 10mg #90."

Clinically, this is adequate. The doctor examined the patient, confirmed ongoing symptoms, and renewed a previously effective medication. But in a legal setting, this note raises questions that it doesn't answer:

• Why is the patient still experiencing spasm 4 months post-accident?
• Have other treatments been tried and failed?
• Is the dosage appropriate for the injury severity?
• How does this medication fit into the overall treatment plan?

These are the questions that adjusters, defense experts, and mediators will ask. If the clinical record doesn't answer them, the attorney must find another way.

Standard Pharmacy Records vs. Clinical Narratives

What Standard Pharmacy Records Show

When a pharmacy dispenses a medication, it generates a transaction record that typically includes:

• Patient name and date of birth
• Medication name, strength, and quantity
• Date dispensed
• Prescriber name
• NDC (National Drug Code) number
• Days supply
• Price charged

This is a billing record, not a clinical document. It tells you what was dispensed and how much it cost, but it says nothing about why it was dispensed or whether it was medically appropriate.

A stack of pharmacy transaction records might show that your client received 12 fills of gabapentin over the course of 14 months. That's useful data. But it doesn't tell anyone why gabapentin was prescribed, how it fit the treatment plan, whether the dosage progression was clinically sound, or how the medication contributed to the patient's recovery.

What Clinical Narratives Provide

A pharmacy clinical narrative — specifically, the type produced in a POGOS Report — transforms raw dispensing data into a coherent clinical story. Written and signed by a licensed pharmacist, these narratives:

• Explain the clinical rationale for each medication in the context of the patient's injuries
• Connect prescriptions to diagnoses with specific clinical reasoning
• Document the treatment timeline showing how the medication regimen evolved as the patient's condition changed
• Address common challenges proactively by explaining off-label uses, treatment duration, dosage escalation, and medication combinations
• Provide professional clinical opinion from a licensed healthcare provider with expertise in pharmacology

The difference is profound. Instead of a spreadsheet showing 8 months of prescriptions, the attorney has a pharmacist-signed clinical document that tells the story of their client's medication journey and why every prescription was necessary.

How POGOS Establishes Medical Necessity

The Pharmacy-Organized General Occurrence Summary — the POGOS Report — is designed specifically to bridge the gap between pharmacy records and the clinical narrative that litigation demands.

Injury-to-Treatment Correlation

The POGOS narrative begins with the patient's injuries as documented in their medical records and maps each prescription to the specific condition it treats. This creates an explicit causal chain:

Accident → Diagnosed injury → Prescribed medication → Clinical rationale for that specific drug, dose, and duration

This chain makes it much harder for an adjuster to argue that a medication was unrelated to the accident. Every prescription is explicitly connected to an accident-related diagnosis.

Treatment Timeline Analysis

The POGOS narrative walks through the treatment timeline chronologically, explaining why medications were started, adjusted, continued, or discontinued at each stage. For example:

"The patient was initially prescribed naproxen 500mg twice daily and cyclobenzaprine 10mg three times daily for acute cervical strain and associated muscle spasm. After 6 weeks with incomplete symptom resolution, gabapentin 300mg was initiated to address emerging radicular symptoms consistent with the progression from acute soft tissue injury to nerve involvement — a well-documented clinical progression following whiplash-type injuries."

This kind of narrative anticipates and preemptively answers the questions that adjusters and defense experts will raise about treatment duration and medication changes.

Drug Utilization Review

The pharmacist conducting the POGOS review evaluates the entire medication regimen for clinical appropriateness:

• Dosage analysis: Are the prescribed doses within established clinical guidelines for the patient's conditions?
• Duration assessment: Is the treatment length consistent with the injury type and severity?
• Drug interaction review: Are there any interactions between prescribed medications that would suggest inappropriate prescribing?
• Therapeutic duplication check: Are multiple medications in the same therapeutic class justified, or do they represent unnecessary redundancy?
• Generic utilization evaluation: Were generic alternatives used where appropriate?

This comprehensive review does double duty: it establishes that the prescribing was clinically appropriate while also demonstrating that the medication costs were reasonable and not inflated by unnecessary brand-name prescribing.

Professional Attestation

Every POGOS narrative is reviewed and signed by a licensed pharmacist. This is critical because it transforms the document from a summary into an expert clinical opinion. A pharmacist's professional attestation carries weight in negotiations and proceedings because:

• Pharmacists are recognized healthcare professionals with specific expertise in medication therapy
• The pharmacist reviewed the complete clinical picture — not just individual prescriptions in isolation
• The attestation puts the pharmacist's professional license behind their opinion
• It provides an expert-level clinical perspective that complements (rather than duplicates) the prescribing physician's records

Using Clinical Narratives in Practice

[!TIP] Include the POGOS Report in your initial demand package — by proactively establishing medical necessity before the adjuster raises challenges, you set the frame for the negotiation rather than responding to it.

In Demand Packages

[!KEY] A pharmacist's professional attestation in the POGOS Report constitutes expert clinical opinion that insurance adjusters and defense counsel cannot easily dismiss — it brings a second licensed healthcare professional's credentials to bear on every prescription in your demand package.

Include the POGOS Report in your initial demand to the insurance company. By proactively addressing medical necessity alongside your medical records and billing summaries, you:

• Demonstrate thorough case preparation
• Preempt common objections before they're raised
• Provide a clinical framework that makes the pharmacy lien harder to challenge
• Show the adjuster that the medication costs are supported by professional clinical analysis

In Lien Negotiations

When negotiating pharmacy lien amounts — whether with your own client's PBA or with opposing lienholders — clinical narratives provide objective support for the medications dispensed. Learn more about effective pharmacy lien negotiation strategies.

In Mediation

Mediators often look for credible documentation to help both sides find middle ground. A pharmacist-signed clinical narrative that methodically explains why each medication was necessary gives the mediator confidence that the pharmacy costs are legitimate — and gives your position credibility.

At Trial

If a case goes to trial, the POGOS Report can serve as a foundation for expert testimony. The pharmacist who prepared the narrative can testify about the clinical appropriateness of the medication regimen, providing testimony that's distinct from — and complementary to — the treating physician's testimony.

This is particularly valuable because:

• Pharmacists bring a different expertise than prescribing physicians (medication therapy management vs. diagnosis and treatment planning)
• A second healthcare professional confirming medical necessity reinforces the treating doctor's clinical decisions
• Pharmacist testimony can address defense challenges about drug pricing, alternatives, and treatment duration with specific pharmacological expertise

Building a Stronger Case

[!KEY] Off-label prescribing — such as antidepressants for nerve pain — is one of the most common targets of defense challenges; a pharmacist-authored clinical narrative that explains the evidence-based rationale for these prescriptions eliminates that attack vector before the demand letter is even sent.

Medical necessity documentation isn't just about defending pharmacy liens. It's about building a more complete, more compelling case for your client's damages.

When you can demonstrate — with professional clinical documentation — that every medication your client took was a necessary part of their recovery from the defendant's negligence, you're not just protecting a line item. You're telling a story about the real impact of the injury on your client's life.

Every prescription filled represents a day your client was in pain. Every medication change represents a clinical setback or complication. Every month of continued treatment represents an injury that didn't resolve as quickly as the defense wants to pretend.

The POGOS Report turns pharmacy records into that story, told through the expert lens of a licensed pharmacist who reviewed the complete clinical picture.

Getting Started

If you're a personal injury attorney who wants to strengthen your medication cost documentation and better defend pharmacy liens in your cases, learn how LienScripts works for attorneys.

Our POGOS Reports provide the clinical narratives you need to establish medical necessity, support your demands, and protect your clients' recoveries.

Additional Resources

• What Is a POGOS Report? — A complete overview of the Pharmacy-Organized General Occurrence Summary
• Documenting Medication Costs for Settlement — Best practices for presenting pharmacy evidence
• 5 Pharmacy Lien Mistakes Attorneys Make — Common pitfalls and how to avoid them

Related Resources

• How Pharmacy Liens Work
• Services for Attorneys
• What Is a Pharmacy Lien?