AppealHound is AI denial-appeal software for US medical billing companies, RCM firms and the specialty practices they bill for. It reads the 835 remittance, ranks every denial by dollars and days left to file, and drafts the appeal letter with a citation to the CMS policy it relies on. A person at the billing company approves every letter before it goes out, and cases over $5,000 go to a manager. Billing companies pay $8 per appeal drafted ($6 above 1,000 a month, $4 above 5,000), with no seat licences, no minimum and no platform fee. Practices pay $300 per location per month on a yearly plan. AppealHound never charges a percentage of recoveries. A free denial review takes four aggregate columns (payer, reason code, count, billed amount) and no patient data.