
Karau is trying to make it easier for patients to challenge insurance denials by reducing the work of writing an appeal.
Holden Karau is the Canadian-born technologist who created Fight Health Insurance, a free AI tool for preparing insurance-denial appeals. Her work on the project grew from helping friends and loved ones navigate the American insurance system.
Turning Insurance Frustration Into Software
She had worked in technology for more than a decade when she built the appeal tool. The project’s official About page connects its origin to insurance disputes affecting people close to her. It also credits a pet-insurance dispute involving her sheltie, Professor Timbit, with pushing her to finish the software.
The service uses a denial letter to produce editable appeal drafts. Karau’s practical focus is the amount of effort a person must expend before an insurer will reconsider a decision. Reducing the writing burden gives a patient a starting point, while the patient still has to check the facts and follow the appeal process.
A Free Patient Tool and a Small Team
Fight Health Insurance identifies Melanie Warrick as a co-founder and describes support from organizations donating compute and other technical resources. The patient-facing tool remains free, with optional contributions and a separate fax option.
The About page explains the project’s motivation in a short sentence: “We hope that by making it easier to appeal medical health insurance denials, we can change that calculus on insurance companies’ part.” It also describes an intended paid practitioner service. The organization presents itself as Fight Health Insurance of Delaware, without establishing nonprofit status.
Life Outside Insurance Appeals
Karau describes herself as a trans woman living in the United States. Her public biography includes motorcycles, mashup music, and time with loved ones and Professor Timbit. She also shares work on Fight Health Insurance through social media and occasional development livestreams.