How-to guide

How to Write a Prior Authorization Letter

Writing a prior authorization letter is less about length and more about matching the requested therapy to payer criteria with clear, documented clinical facts.

What to include

  • Exact request and diagnosis context.
  • Criteria-aware rationale, not just general clinical history.
  • Prior therapy, contraindication, or access-barrier details.
  • Attachment checklist and final review owner.

De-identified example outline

  1. Confirm the exact requested item, drug, dose, or service.
  2. Read the payer criteria or denial language when available.
  3. Summarize only the clinical facts that answer the criteria.
  4. Explain why alternatives are insufficient or inappropriate.
  5. Ask for a specific authorization decision.
  6. Review, attach records, and submit through the payer-required channel.

Common mistakes to avoid

  • Starting with a long history that buries the actual request.
  • Not naming the requested therapy or service clearly.
  • Forgetting to state the action requested from the payer.

How AppealRx helps

  • Prompts for the facts that usually matter most: requested therapy, diagnosis context, prior therapy history, and payer criteria.
  • Creates a reviewable draft quickly so staff can spend more time checking accuracy.
  • Keeps patient identifiers out of the drafting workflow.

Frequently asked questions

What makes a prior authorization letter effective?

The best letter is usually specific, criteria-aware, and concise. It should help the payer reviewer match documented clinical facts to the applicable policy.

What part should the practice still handle?

AppealRx can draft the structure and rationale, but the practice still controls review, final identifiers, attachments, and payer submission.

Prior Authorization

Draft a prior authorization letter with AppealRx

Start with de-identified facts, review an example, then generate a professional letter draft with DOCX export after payment.