Frequency and duration not justified (Updated for 2026)

Common Causes for PT05

Denials with code PT05 typically happen for the following specific reasons:

• The billed treatment sessions exceed the maximum allowed visits per week or month specified in the payer's Local Coverage Determination (LCD) or National Coverage Determination (NCD) guidelines.
• The medical documentation fails to demonstrate significant, objective functional progress, suggesting that the patient has reached a plateau and ongoing frequent therapy is no longer rehabilitative.
• The therapy plan of care (POC) was not timely updated, re-certified, or signed by the referring physician within the payer-specified timeframe (e.g., every 30 days or 10 visits).
• Failure to document clinical justification, such as complex comorbidities or post-surgical complications, that requires a higher frequency or extended duration of care compared to standard clinical pathways.

How to Prevent PT05 Denials

To avoid receiving this denial in the future, implement these specific checks:

• Verify and monitor payer-specific utilization guidelines and authorization thresholds for rehabilitation services prior to initiating or extending a treatment plan.
• Ensure the plan of care is signed and certified by the physician or non-physician practitioner within the mandated timelines to validate the prescribed frequency and duration.
• Document objective, standardized functional outcome measures at regular intervals to clearly illustrate progress and justify the continuing medical necessity of the therapy.
• Implement clinical review alerts in the Electronic Health Record (EHR) system to flag patients approaching their approved visit or date-range thresholds for immediate reassessment.

Appeal Letter Template for PT05

If you believe this claim was denied incorrectly, you can use the following template to submit an appeal.

[Your Practice Header]
[Date]

[Payer Name]
[Appeals Department Address]

RE: Appeal for Claim [Claim Number]
Patient: [Patient Name]
ID: [Patient ID]
Date of Service: [Date]
Denial Code: PT05 - Frequency and duration not justified

Dear Appeals Department,

I am writing to appeal the denial of the above-referenced claim, which was denied with code PT05: "Frequency and duration not justified".

We are appealing the denial under code PT05, asserting that the frequency and duration of the therapy services provided were medically necessary and appropriate. Under CMS Medicare Benefit Policy Manual Chapter 15, Section 220, outpatient therapy services are covered when they require the skills of a qualified therapist and are reasonable and necessary for the treatment of the patient's illness or injury. The attached medical records, including initial evaluations and progress notes, demonstrate that the patient presented with complex clinical indicators and comorbidities that necessitated the specific frequency of treatment to prevent regression and facilitate functional recovery. Objective measurement scales documented in the progress reports show consistent, measurable improvement directly corresponding to the prescribed treatment plan, proving that the duration of care was clinically justified. We respectfully request that this denial be overturned and the claim be processed for full payment.

Attached please find:
1. A copy of the original claim.
2. The relevant medical records supporting the service.
3. [Any other supporting documents].

We respectfully request that you reprocess this claim for payment.

Sincerely,

[Your Name]
[Title]
[Practice Name]