HCC Buddy is an AI-powered ICD-10-CM encoder and HCC coding platform built for risk adjustment coders and Medicare Advantage professionals. It combines a complete ICD-10-CM code search engine, HCC risk adjustment mapping across all active CMS models (V24, V28, ESRD, RxHCC), an AI coding assistant, NPI provider lookup, drug-to-diagnosis reference, and Smart Notes — all in a single tab or Chrome extension sidebar. Every code lookup returns the full diagnostic detail alongside its HCC category, RAF weight, coding tips, clinical significance, documentation requirements, and MEAT criteria guidance. The Chrome extension opens as a sidebar inside any EHR or web-based medical record, so coders never have to leave their workflow. HCC Buddy is designed for individual coders, coding teams, and Medicare Advantage health plans who need fast, accurate, CMS-current coding tools without enterprise contracts or long onboarding cycles.