What are Prior Authorization Denials and Appeals?

The Top 20 Voices in Physical Therapy You Should Be Following for Innovation, Education, and Impact
SPRY
May 5, 2025
5 min read
doctor failed to get pre authorization

Table of Contents

Introduction

Prior authorization (PA) remains a significant administrative challenge. In an effort to control costs and ensure medical necessity, insurers require PA before approving certain therapies, drugs, or procedures. However, frequent denials create problems for your patients, delay necessary treatments, and add paperwork to your workload.  

According to a 2023 American Medical Association (AMA) survey, 94% of doctors reported PA-related care delays, and 33% said these delays resulted in poor patient outcomes. Physical therapists face similar challenges, as many insurance companies question rehabilitation services even when they are clearly medically necessary. Denials often result from incomplete documentation, coding errors, or noncompliance with insurer policies.  

You, as a physical therapist can streamline approvals and reduce administrative burdens to minimize cases of a doctor failing to get pre authorization. While minimizing revenue loss for providers, a clear understanding of the appeals process ensures that patients receive timely, essential care.

This blog outlines common PA denial reasons, strategies to prevent them, and best practices for successful appeals.

What is Prior Authorization?

Prior authorization (PA) is a process used by health insurance companies to decide if they will cover a specific service, medication, or medical device that a doctor has recommended. This decision is made before the treatment is given to make sure that it is needed, the right choice for the patient, and follows medical guidelines.

Insurance companies require healthcare providers to obtain prior authorization (PA) before administering certain treatments, medications, or procedures. Insurers use PA to control costs, ensure medical necessity, and prevent unnecessary services. However, despite its intended goal of improving care efficiency, PA often causes treatment delays and increases administrative burdens.

PA impacts your clinic productivity and patient outcomes. It ensures timely interventions and minimizes disruptions in patient care.

Function of Insurance Companies for Medical Necessity

Insurance companies assess PA requests based on coverage policies, cost-effectiveness, and clinical guidelines. They require comprehensive documentation, including the patient’s diagnosis, medical history, and prior treatment outcomes. Insurers evaluate requests by comparing provider recommendations with predetermined standards, such as internal company policies or Medicare guidelines.

Many denials occur due to discrepancies between provider recommendations and insurer policies. For instance, even if you deem physical therapy medically necessary, an insurer may deny the request if it does not meet their step therapy requirements. Payer-specific requirements helps prevent rejections and strengthens appeals when necessary.

Areas Frequently Requiring Prior Authorization

While PA requirements vary by insurer, the following areas are most commonly affected:

  • Medications: High-cost pharmaceuticals, biologics, and specialty drugs used for neurological disorders, autoimmune diseases, and chronic pain.
  • Surgeries: Spinal surgeries, joint replacements, elective procedures, and other orthopedic treatments.
  • Advanced Imaging: PA is often required for MRIs, CT scans, and other diagnostic imaging, leading to delayed diagnoses.
  • Physical Therapy and Rehabilitation: Insurers frequently limit therapy sessions, requiring providers to justify additional visits.
  • Durable Medical Equipment (DME): Wheelchairs, prosthetics, and other assistive devices often have strict approval requirements.

To expedite approvals and avoid unnecessary delays, you must stay informed about PA requirements. Strategic preauthorization submissions and thorough documentation improve approval rates and reduce treatment interruptions.

Spry streamlines preauthorization by increasing approval rates, reducing documentation errors, and automating preauthorization submissions. Its ePA solutions help mitigate the 33% risk of significant patient harm caused by PA-related delays, assisting doctors and physical therapists in meeting insurer-specific requirements. For faster approvals of treatments, imaging, and rehabilitation services, Spry optimizes medical necessity documentation.

Why do Prior Authorization Denials Occur?

You often spend valuable time appealing PA denials, which delay patient care. Common denial reasons can help you improve approval rates and prevent unnecessary rejections..

Each insurer has different documentation requirements. You, as a physical therapist can prevent delays by verifying submission guidelines before filing PA requests.

1. Failure to Meet Medical Necessity Criteria

Insurance companies assess PA requests based on internal medical necessity guidelines. Denials occur when the insurer lacks clinical evidence supporting the requested treatment, and when step therapy requirements are not met (e.g., insurers require conservative treatments to fail before approving advanced interventions).

Physical therapy sessions may also be denied if insurers believe progress should occur within pre-approved limits. Functional evaluations and progress reports can strengthen the case for continued care.

2 .Use of Out-of-Network Providers or Services

Many insurers do not cover PA requests if providers or services are outside their network. This affects specialists not contracted with the insurance plan, and imaging or surgical centers outside authorized networks. Rehabilitation services are not covered under the plan. If out-of-network approvals are denied, your patients may need financial assistance options. You should confirm network participation before submitting PA requests.

3. Billing and Coding Errors

Incorrect CPT, ICD-10, or HCPCS codes often result in automatic denials. Common mistakes include mismatched procedure and diagnosis codes, use of outdated or non-reimbursable codes, and incorrect modifiers affecting claim processing. 

4. Exceeding Plan Coverage Limits

Insurance policies often impose limits on medications, treatments, and procedures, which can lead to denials if these limits are exceeded. For example, physical therapy visits may be denied once the allotted number of sessions is reached. Additionally, step therapy rules may require your patients to try generic drugs before being approved for brand-name medications. Some policies also enforce quantity limits, which can restrict access to prescribed medications, making it harder for your patients to receive the care they need.

With these common prior authorization denial reasons, you can streamline submissions, and reduce administrative burdens.

By instantly confirming insurer-specific policies, Spry assists providers in fulfilling medical necessity criteria and preventing denials due to incorrect documentation or coding. Moreover, Spry’s ePA system guarantees precise coding compliance, avoiding denials for outdated or inaccurate procedure codes.    

What is the Appeal Process for Denied Authorizations?

Prior authorization (PA) denials create challenges for patients and increase the administrative burden on you. However, you can help patients receive the treatments they need by the appeals process and successfully overturning unjust denials.

1. Reviewing the Denial Letter

Insurance companies issue denial letters that explain the reasons for rejection. You should carefully review these letters to identify missing information, coding errors, or misinterpreted policies. Common reasons for denial include:

  • Incomplete documentation that does not meet insurer guidelines.
  • Lack of medical necessity as per the insurer’s criteria.
  • Incorrect procedure or diagnosis codes.
  • Failure to meet step therapy requirements.
  • Limitations due to out-of-network providers.

The exact reason for denial helps determine the best approach for filing an appeal.

2. Gathering Supporting Evidence

A strong appeal requires comprehensive medical records. You should submit:

  • Detailed patient records supporting the treatment’s necessity.
  • Proof of prior treatment failures justifying the requested service.
  • Peer-reviewed research that validates the recommended treatment.
  • Letters of medical necessity explaining the risks of delayed care.

For you, as a physical therapist, additional supporting documents may include patient outcome data, functional assessment results, and progress reports.

3. Submitting an Internal Appeal

Most insurers allow internal appeals within 30 to 60 days of the denial. You should:

  • Use insurer-specific appeal forms.
  • Include all relevant clinical documentation.
  • Clearly explain how the treatment meets the insurer’s medical necessity criteria.
  • Provide a letter from a doctor or therapist detailing the health impact of the denial.

Well-supported appeals often lead to successful reversals at the internal appeal stage.

4 .Escalating to an External Review

If an internal appeal is unsuccessful, providers may request an external review through a third-party agency, such as the state insurance department or an independent medical review board. External reviews apply in cases where:

  • The denial involves a life-threatening condition.
  • Internal appeals fail despite strong medical evidence.
  • State or federal laws mandate independent oversight.

Under the Affordable Care Act (ACA), Medicare, and Medicaid, patients have the right to an external appeal. Providers should also check state-specific laws for commercial insurance appeals.

5. Best Practices for Successful Appeals

To improve appeal success rates, you, as a physical therapist should:

  • Maintain thorough records of all insurer communications.
  • Submit appeals within deadlines to avoid automatic denials.
  • Use insurance-preferred terminology and coding standards.
  • Engage patient advocacy groups when necessary.

By using proactive appeal strategies, you can reduce financial losses, improve patient outcomes, and minimize treatment delays.

Strategies for Reducing Denial Risks

By structured techniques, such as improving documentation, streamlining submission processes, and ensuring compliance with insurer requirements, you can reduce denial rates.

1. Submit Accurate and Comprehensive Documentation

Incomplete or inaccurate information is a leading cause of PA denials. You should submit thorough clinical documentation that justifies medical necessity.

  • Record previous treatments and their outcomes to support the request.
  • Follow insurer-preferred coding standards and terminology.
  • Ensure all required forms are correctly completed and submitted.

You, as a physical therapist should also include therapy progress reports, functional assessment results, and justifications for continued sessions.

2. Verify Insurance Requirements Before Submission

Each insurer has different PA policies. Providers should:

  • Confirm whether prior authorization is required for the requested treatment.
  • Review the insurer’s medical necessity criteria for the service.
  • Check for coverage limitations or step therapy requirements.
  • Identify preferred formulary alternatives for prescribed medications.

Proactively verifying these details helps prevent rejections due to policy misalignment.

3. Follow Proper Coding and Billing Procedures

Errors in CPT, ICD-10, or HCPCS codes often result in automatic denials. To avoid this, you should stay updated on insurer-specific coding and billing changes, and use correct modifiers where applicable. You should ensure diagnosis codes align with the requested treatment, and double-check coding accuracy before submission. Regular staff training and coding audits help prevent administrative denials.

4 .Maintain Active Communication with Insurers

Engaging proactively with insurers clarifies PA requirements and resolves potential issues before denials occur. You, as a PT should consult insurance representatives to clarify unclear requirements, and request pre-submission reviews for complex cases. They should participate in peer-to-peer discussions to justify treatment needs, and maintain consistent provider-insurer communication reduces avoidable denials.

5 .Use Electronic Prior Authorization (ePA) Systems

Manual PA processes lead to errors and delays. ePA systems improve efficiency by automating form submissions, and reducing processing times. They also ensure real-time compliance with insurer policies, lowers administrative burdens on providers.

6. Track and Analyze PA Trends

Monitoring and analyzing PA denials helps identify patterns and improve approval rates. You should:

  • Document denied requests along with reasons for denial.
  • Identify insurers with the highest denial rates and adjust submission strategies accordingly.
  • Develop standardized forms for frequently denied treatments.
  • Train staff on insurer-specific PA trends.

Data-driven adjustments minimize future denials and increase efficiency.

7. Educate Patients About Insurance Coverage

Patients play a role in PA approvals. You, as a PT should discuss insurance coverage limitations before treatment begins. They should also guide patients on appealing denials through advocacy, and encourage patients to communicate with insurers about PA requirements. Educating patients accelerates approvals and reduces provider workload.

By adopting these strategies, physicians and physical therapists can improve approval rates, reduce denials, and ensure timely access to essential treatments.

Spry automates submissions and reduces processing times by up to 40% by integrating electronic prior authorization (ePA) tools. Spry helps reduce manual errors and optimize submission strategies by providing real-time insurer compliance and tracking PA trends. In addition to streamlining processes and reducing administrative burdens, this increases overall approval rates. 

Conclusion

You, as a physical therapists must be proactive in expediting approvals, reducing denial rates, and ensuring timely patient care. Accurate coding, proper documentation, and adherence to insurer policies help minimize avoidable rejections. When denials occur, peer-to-peer reviews and structured appeal processes offer opportunities to overturn unfavorable decisions.

Delays in prior authorization impact PTs and increase reimbursement claims approval by 98%. By automating PA tracking, Spry saves clinics’ front-end time by 70%. Its integration with EMRs ensures accurate submissions, faster reimbursements, and uninterrupted patient care. Schedule a demo with Spry today.

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