ICD Peek – ICD-10 Code Lookup on Hover

Hover any ICD-10-CM code to see its description and whether it's billable. FY2027 codes, works offline, no data leaves your browser.

Hover any ICD-10 code on any web page and instantly see what it means, and whether it's billable. ICD Peek is built for medical coders, billers, CDI specialists, nurses, practice managers and anyone who reads diagnosis codes all day in an EHR, billing system, clearinghouse or payer portal. No more copying codes into a search engine or a second tab. ✅ HOVER TO SEE THE CODE • Move the mouse over a code like E11.65, I10 or S72.001A and a card shows the full description • Works in tables, notes, claim screens and even inside input fields • Codes are softly underlined so you can spot them at a glance (you can turn this off) • Understands dotted and undotted codes (E11.9 and E119) ✅ CATCH NON-BILLABLE CODES • Every code is marked "Billable" or "Not billable" • Header codes like E11.6 list the billable codes underneath, so you can pick the right one • Click any of them to check it right there ✅ SEARCH 98,000+ CODES • Click the toolbar icon or press Alt+Shift+I • Search by code ("E11.6") or by plain words ("type 2 diabetes kidney") • Copy the code, or the code with its description, in one click • Recent codes are remembered on your device ✅ RIGHT-CLICK LOOKUP • Select any code, right-click and choose "Look up ICD-10 code" ✅ UP TO DATE • Complete official CMS ICD-10-CM FY2027 code set (effective October 1, 2026) • Includes the new FY2027 codes, such as the QA genetic-condition codes 🔒 PRIVATE BY DESIGN • All codes are built into the extension. It works offline • It never sends page content, codes or anything else anywhere • No account, no tracking, no ads • Turn it off for any website in one click Note: ICD Peek is a lookup aid, not coding advice. Always follow the official ICD-10-CM guidelines and your payer's rules. ICD-10-CM data is from the Centers for Medicare & Medicaid Services (CMS) and is in the public domain. ICD Peek is not affiliated with CMS, the CDC or the WHO. Made by Luke at linucat.com. ICD Peek is free; if it helps you, you can support it at ko-fi.com/linucat. Questions or requests: support@linucat.com