How to Write a Physical Therapy Appeal Letter

A well-written physical therapy appeal letter answers two questions the payer's reviewer needs answered: was the care medically necessary and does the documentation match what the plan requires. This guide walks through both.

1. Read the denial notice carefully

Every payer denial cites a reason code — medical necessity, lack of prior authorization, exceeded visit limits, missing documentation, coding, or timely filing. Your appeal must respond to the exact reason cited. A generic "please reconsider" letter almost always gets denied a second time.

2. Structure the letter the way reviewers read it

• Header: patient name, DOB, member ID, claim number, dates of service, denial reason.
• Clinical summary: diagnosis, referring provider, onset, prior level of function.
• Medical necessity: functional deficits, objective measures, evidence-based rationale.
• Treatment summary: CPT codes, frequency, duration, and measurable progress toward goals.
• Formal appeal statement: a direct request to overturn the denial with citations to plan language when possible.

3. Ground medical necessity in functional outcomes

Payers respond to measurable change: gait speed, ROM in degrees, MMT grades, Oswestry or DASH scores, timed-up-and-go, pain on VAS. State where the patient started, where they are now, and where continued care will take them. Tie each intervention to a functional goal (e.g., "manual therapy to restore shoulder flexion from 110° to 160° to enable overhead reaching for ADLs").

4. Match payer-specific requirements

Medicare, commercial plans, and Medicaid managed care all have different appeal rules — deadlines, required forms, reviewer levels, and preferred citations (LCDs for Medicare, medical policy bulletins for commercial). Include the plan's own criteria and show, line by line, how the visit meets them.

5. Attach supporting documentation

• Initial evaluation and any re-evaluations
• Daily notes covering the disputed dates of service
• Plan of care signed by the referring provider
• Objective outcome measures and progress notes
• Physician orders and prior authorizations, if applicable

6. Keep the tone formal and specific

Avoid emotional language. State facts, cite documentation, and ask for a specific outcome (overturn the denial, reprocess with modifier, approve additional visits). Sign the letter with credentials and provide a callback number for the reviewer.

7. Send it before the deadline — and track it

Commercial appeal windows are commonly 60–180 days from the date of the denial. Send via a trackable method, log the submission date, and calendar the payer's response deadline so you know when to follow up.

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