Appeals & Disputes

Gathering Evidence for Your Appeal

5 min read 1 views May 25, 2026

Building Your Case

The strength of your appeal depends on the evidence you provide. Gathering the right documentation before you write your appeal letter significantly improves your chances of success.

Essential Documents

From Your Insurance Company

Denial Letter

  • Keep the original denial
  • Note the reason codes
  • Identify the specific basis for denial
  • Check appeal instructions and deadlines

Explanation of Benefits (EOB)

  • Shows how claim was processed
  • Details what was covered/not covered
  • Indicates amounts paid and owed
  • Reference for specific claim numbers

Policy Documents

  • Summary of Benefits and Coverage (SBC)
  • Evidence of Coverage (EOC)
  • Plan Document (for employer plans)
  • Any amendments or updates

From Your Healthcare Provider

Medical Records

  • Office visit notes
  • Test results and reports
  • Procedure notes
  • Hospital admission/discharge records

Letter of Medical Necessity

  • Written by your treating physician
  • Explains why service was needed
  • Addresses specific denial reasons
  • Cites clinical guidelines

Prior Authorization

  • Authorization number
  • Date authorization was given
  • What was authorized
  • Any conditions attached

Billing Records

  • Itemized statement
  • CPT and ICD-10 codes used
  • Dates of service
  • Charges and amounts

Additional Supporting Evidence

Clinical Guidelines

  • Medical society recommendations
  • Treatment protocols
  • FDA approvals
  • Peer-reviewed studies

Coverage Precedents

  • Previous approvals for similar services
  • EOBs showing past coverage
  • Policy changes if relevant

Personal Documentation

  • Your own notes about symptoms/treatment
  • Calendar entries for appointments
  • Communication records
  • Photos if relevant to treatment

How to Request Records

Medical Records

Contact the provider's medical records department:

  • Submit written request (HIPAA form)
  • Specify exactly what you need
  • Request expedited processing if urgent
  • May involve a fee ($25-50 typical)

Insurance Documents

Request from member services:

  • Ask for specific policy language
  • Request claim processing history
  • Get copies of any prior authorizations
  • Obtain internal notes if available

Organizing Your Evidence

Create an Evidence Packet

Section 1: Appeal Letter

  • Your written appeal
  • Summary of your case

Section 2: Denial Information

  • Original denial letter
  • EOB showing the denied claim
  • Any prior denial letters

Section 3: Policy Evidence

  • Relevant policy sections highlighted
  • Coverage provisions that support your case
  • Definitions that help your argument

Section 4: Medical Evidence

  • Medical records (most relevant portions)
  • Letter of medical necessity
  • Test results supporting need
  • Clinical guidelines

Section 5: Additional Support

  • Prior authorization documentation
  • Previous approvals for similar services
  • Published medical literature

Tips for Organization

  • Use tabs or clear separators
  • Number pages for reference
  • Create a table of contents
  • Highlight key passages

What Makes Evidence Strong

Specific and Relevant

  • Directly addresses denial reason
  • References specific policy language
  • Shows clear connection to your case

From Authoritative Sources

  • Medical records from treating physicians
  • Published clinical guidelines
  • Official policy documents

Complete but Concise

  • Include everything relevant
  • Don't pad with irrelevant material
  • Highlight key information

Current and Accurate

  • Recent medical records
  • Current policy versions
  • Correct codes and dates

Common Evidence Gaps

What's Often Missing

  • Specific policy language (not just plan name)
  • Detailed medical records (not just diagnosis)
  • Physician's explanation of necessity
  • Prior authorization proof

How to Fill Gaps

  • Request additional records
  • Ask doctor for letter of necessity
  • Search policy document for relevant sections
  • Contact provider for authorization confirmation

Checklist Before Submitting

  • Appeal letter is clear and complete
  • Denial letter is attached
  • Relevant EOBs are included
  • Policy language is cited and attached
  • Medical records support necessity
  • Physician letter of necessity included
  • Prior authorization documented
  • All pages numbered
  • Table of contents created
  • Copies made for your records

Keep Copies

Always maintain:

  • Complete copy of everything submitted
  • Proof of delivery (certified mail, fax confirmation)
  • Record of submission date
  • Notes of any phone conversations

Your evidence tells your story. Make it complete, organized, and compelling.