ICD-10 Coding Reference
The ICD-10 reference
that actually explains
the code
Why coders choose Lynceus
Designed for the work, not just the lookup
Every feature was built around a frustration real coders have with every other tool on the market.
Codes that speak plain English, not bureaucratic Latin
Every code comes with a clear, clinically accurate explanation written for working coders — not researchers. Understand at a glance whether J18.9 means lobar pneumonia, bronchopneumonia, or unspecified without digging through source documents.
- Plain-English definition alongside the official description
- Excludes 1 & Excludes 2 notes clearly labeled and explained
- Clinical context drawn from current CMS and AHA guidelines
A lung infection when the specific germ (bacteria, virus, or fungus) causing it is not documented. Use when chart notes say "pneumonia" without specifying a pathogen.
Commonly coded with
Top 5 coded alongside E11.9
The 5 codes most often billed alongside yours
No other reference surfaces billing co-occurrence data at the point of lookup. See which codes real coders pair with this one — catch missed diagnoses, avoid upcoding risk, and code more completely from the first pass.
- Real co-occurrence data, not guesswork
- Reduce denials from incomplete code sets
- Faster, more complete coding on the first pass
HCC 19 — Diabetes without complication
MA plan payment rate · blended 33% in 2026
HCC 37 — Diabetes without complication
MA plan payment rate · blended 67% in 2026
RxHCC 17 — Diabetes
Part D prescription drug plan risk adjustment
No mapping
Not applicable for this diagnosis
Every risk model, one lookup — HCC, RxHCC, and ESRD
Lynceus covers all four CMS risk adjustment models at the point of lookup: CMS-HCC v24, CMS-HCC v28, RxHCC (Part D), and the ESRD model. See the category, HCC number, and whether the code risk-adjusts — for every model relevant to your patient population. No spreadsheets, no cross-referencing.
- CMS-HCC v24 & v28 — MA plan risk adjustment
- RxHCC — Part D prescription drug plan adjustment
- ESRD model — dialysis & transplant patient populations
Search "CHF" and get what you actually mean
Clinical acronyms are ambiguous by nature. Type "CHF" and Lynceus surfaces every possible match — then clicking one takes you directly to the full code with explanation, excludes, and co-coding context. No hunting through a flat results list.
- Possibility list shows every interpretation
- One click to the full code detail page
- Also searches by partial alphanumeric code (e.g. "J18" returns all J18.x)
"CHF" may refer to — select to view full code
Every other ICD-10 tool assumes you already know what the code means. Lynceus is the first one that explains it.
The reference built for working coders, not database administrators
English definitions alongside every official code description
CMS and AHA guidelines updated every October 1 — no lag
Co-coding context so you never miss a code that should be there
The scope of ICD-10
Every code. Every update. Every explanation.
Sourced from CMS official tabular lists and updated to reflect every AHA Coding Clinic advisory. No lag. No guesswork.
See pricingThe difference
Why coders leave the old tools behind
The legacy ICD-10 references were built for database exports, not clinical workflows. Lynceus was built for the person who looks up dozens of codes a day.
| What you need | Old tools | Lynceus |
|---|---|---|
| Plain-language explanation of the code | Raw description only | |
| Top 5 commonly co-coded diagnoses | Not available | |
| Acronym search with disambiguation | Keyword only, no disambiguation | |
| Partial alphanumeric code search | Exact match only | |
| Excludes 1 & Excludes 2 clearly labeled | Buried in raw tables | |
| Risk adjustment — HCC v24/v28, RxHCC & ESRD | Not available | |
| Updated every October 1 — zero lag | Variable — often weeks behind |
Pricing
Priced for individuals and small practices
No enterprise contracts. No per-seat surprises. A straightforward rate that makes sense for CPCs, billers, and CDI specialists working independently or in small teams.
Individual
For CPCs and billers working independently
- Unlimited code searches
- Plain-language explanations
- Top 5 co-coding suggestions
- Acronym disambiguation
- Partial code search (e.g. "J18" returns all J18.x)
14-day free trial. No credit card required.
Practice
For billing teams and specialty clinics
- Everything in Individual
- Up to 5 team seats
- Search history & recently viewed codes
- Priority access to new features
- Email support with guaranteed reply
14-day free trial. Cancel anytime.
Need more than 5 seats or custom EMR integration? Contact us for enterprise pricing.
Start today
Stop looking up codes.
Start understanding them.
Join medical coders and billers who trust Lynceus to give them the context, clarity, and co-coding guidance they need — on every single lookup.
14-day free trial. No credit card required. Cancel anytime.