AppealFlow
Free health insurance appeal letter generator and tools
About AppealFlow
AppealFlow is built for US patients who have received a health insurance denial and need to respond quickly and clearly. Its core letter generators are free: you upload an EOB or denial letter, or enter claim details manually, then edit the generated draft and export it as a PDF or Word file.
Beyond the letter generator, the site offers denial code lookup, CPT and ICD-10 code references, and calculators that estimate internal appeal, external review and expedited filing deadlines. It also has specialized generators for issues such as GLP-1 prior authorizations, MRI denials, surprise bills and dental claims.
What sets it apart is its focus on document preparation rather than advice. Optional paid packs add filing checklists and external review templates, while the site states clearly that it does not provide medical, legal or insurance advice and that letters should be reviewed with a clinician or advisor before filing.
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