Vitals: ICD-10 & 11 Browser

ThisLucidLens

About this app

Vitals: Offline ICD-10 & ICD-11 Browser

A high-performance, offline-first reference tool built by a clinician for students, researchers, and health professionals.

The Story Behind Vitals

I’m a doctor in training in Scotland. In my daily practice, I use the ICD-10 and ICD-11 classifications constantly, but I grew frustrated with the tools available. Most apps were either clunky and ugly, hidden behind expensive subscriptions, or failed the moment I stepped into a hospital elevator or a thick-walled building without Wi-Fi. Even the official websites are poorly optimised for mobile use.

Vitals started as a small side project to solve my own workflow issues. It grew into something much more ambitious: a mission to fit the entirety of the ICD-10 and ICD-11 datasets into a single, beautiful, and ultra-performant app. It took a long time to build and a lot of learning to get right, but I think Vitals finally delivers the fast, reliable experience that researchers, students, and professionals need.

⚡ Built for Field & Professional Use

True Offline-First: No internet? No problem. The entire database is stored locally. Whether you're in a lead-lined basement, a research lab, or a rural clinic, Vitals works instantly.

Instant Search: Using a dedicated high-performance engine (FTS4), find keywords, synonyms, and codes as fast as you can type.

Zero Subscriptions: No monthly fees, no ads, and no trackers. Just a professional-grade reference tool that respects your privacy and your wallet.

🔍 Advanced ICD-11 & ICD-10 Reference

Full Post-coordination: Vitals is one of the few apps to support full offline ICD-11 post-coordination. Construct complex extension codes for lateralisation, severity, and more directly within the app.

Quick Copy: Seamlessly copy codes and titles to your clipboard with a single tap for use in your notes, research, or reports.

Deep Hierarchy Traversal: Effortlessly browse complex medical ontologies with a recursive engine designed for fluid navigation.

Detailed Context: View full inclusions, exclusions, and detailed diagnostic criteria at a glance.

Interactive Pills: Navigate between related codes using tappable UI links.

🎨 A Professional Design Experience

120Hz Fluidity: Optimised for modern displays with ultra-smooth scrolling and jank-free animations.

Modern Design: A clean, Material 3 interface that prioritises legibility and reduces eye strain during long periods of use.

Battery Efficient: Engineered with a low memory footprint to ensure it won't drain your phone during a busy shift or study session.

🛠 Reliability & Privacy

Personalised Bookmarks: Save frequently used codes for instant retrieval.

Data Integrity: All content is sourced directly from the World Health Organisation (WHO) and presented accurately for educational purposes.

Privacy & Access: I believe that essential reference tools should be accessible to everyone without the friction of a subscription. Vitals requires no monthly fees, no login, and no account. It is built to function entirely offline with no personal data collection, ensuring that your knowledge base is always at your fingertips, regardless of your location or connectivity.

🚀 Roadmap

This app is still growing. Future updates will include:
- Cross-Version Mapping: Compare ICD-10 and ICD-11 side-by-side, to see how the classifications have moved between versions.
- Multi-language Support: Access global classifications in multiple languages.
- Big Screens: Proper support for tablets and foldables.

Disclaimer: This app is for educational and reference purposes only and does not provide medical advice, diagnosis, or treatment.

Developed by Dr. Thomas Erlandsen.
Banner image created using Hotpot.ai

What’s new

Production release!
Huge changes almost everywhere in the app.
Thanks to those of you who took the time to test.