KeepMD EOB Decoder is a privacy-first browser extension for Chrome and Microsoft Edge that turns confusing Explanation of Benefits (EOB) and medical bill text into plain English. Paste a line from your EOB, open a text-based PDF, or highlight text on any webpage and right-click to decode it. The extension explains ICD-10-CM diagnosis codes, HCPCS Level II codes, and common insurance terms. Decoding happens locally in your browser, so your bill text is not sent to a server, and the extension does not track browsing history. If you want to keep the result, copy it, save a local draft, or send an encrypted handoff to the KeepMD app. Built for patients and caregivers who want to understand a bill before calling the insurer.