Clinical data has a reference now.
It used to live in a dozen downloads with a dozen schemas and a dozen release cycles. Now it's a URL. Codes, concepts, hierarchies, maps. GET them.
Every code. Every standard.
Everyone else ships a lookup for one of these. Owning a standard is table stakes. Owning the relationships between them is the whole point.
Every code has a page.
Which means every code also has a URL, and every URL is also an endpoint. Humans read. Programs call. Same answer.
Hierarchy
Cross-maps
Attributes
Related codes
The reference is the platform.
Everything else we do, coding charts, auditing charts, grounding your LLM, is the reference, used. Get the ground truth right and the rest falls out for free.
What you can do with it.
Read the reference yourself. Or point us at a chart and we'll read it for you. Same library either way.
Look up &
cross-map.
- Full code record
- Cross-mapping
- Hierarchy walk
- Synonym search
- Free · 200/day
Code charts
automatically.
- Any of the 6 standards
- Confidence + rationale
- Source span
- Batch + streaming
- 94.2% top-1
Audit coded
charts.
- HCC capture
- Specificity
- Denial risk
- Problem-list drift
- RADV readiness
Benchmarked in public.
No hand-picked customer wins. MIMIC-IV, CMS HCC v28, NLM UMLS maps, held-out, scripts linked, numbers printed. Run it yourself if you don't believe us.
Methodology, in the open.
Every benchmark cites its source and held-out set. Scripts linked from each row.
| Standard | Task | Top-1 | Top-5 | Source |
|---|---|---|---|---|
| ICD-10-CM | Discharge → primary dx | 94.2% | 98.7% | MIMIC-IV v2.2 |
| ICD-11 MMS | Narrative → stem code | 88.6% | 96.1% | WHO MMS set |
| LOINC | Lab order text → LOINC | 91.3% | 97.4% | Regenstrief corpus |
| HCC v28 | Recall of capturable HCCs | 87.1% | n/a | Synthetic CMS set |
| SNOMED ⇄ ICD-10 | Mapping agreement | 99.4% | n/a | NLM UMLS 2025AA |
Pay for what you read.
Metered on the thing being done, not the people doing it. The reference itself is free for humans, forever. We're not charging anyone to look up a billing code.
Free → $149 → $499.
- All six standards unlocked (Pro)
- Cross-map + hierarchy + synonyms
- Pro ($499): higher limits, bulk
Per call, tiered.
- ICD-10 / 11 / LOINC / ICF
- Batch + streaming
- Volume from $199/mo
Per chart.
- HCC · RADV · specificity
- Denial · problem-list drift
- Enterprise: BAA + SSO
Pick your entry point.
Most teams start at one door and walk to the others. That's fine.
EHR & scribe teams
Drop /code into your pipeline. Every code comes back grounded in the reference, so you can link straight to the definitions and maps.
Infer →RCM & coding companies
/audit finished charts before drop. HCC, specificity, denial flags, problem-list drift. Priced per chart.
Evaluate →Payers & analytics
Cross-map legacy ICD-10 data to SNOMED, UMLS, or ICD-11. Walk hierarchies. Resolve synonyms. Build your internal ontology on ours.
Read →Researchers & digital health
Start free. 200 /reference queries/day. No sales call, no data license, no BAA until you need it.
Pricing →The short version.
What is "the reference," exactly?
The codes in every major clinical standard, plus how they relate to each other — hierarchies, synonyms, cross-maps, attributes — in a single normalized schema. Browsable by a human. Callable by a program. Same data.
How is this different from just licensing SNOMED or UMLS?
Those are files you download and maintain. This is an API you call. Someone else already did the joining, the deduping, and the release-cycle babysitting. You skip all of that and go build your product.
Do you retain PHI?
No. Default is zero-retention: request bodies are processed in memory and dropped after response. Enterprise customers can opt in to logging under a signed BAA if they need it for QA.
Can I use just /reference and skip /code and /audit?
Of course. That's the whole point of metering them separately. Plenty of teams never touch inference or audit — they just want the data, clean, behind a URL.
I used autoicdapi.com for free ICD-10 lookup. Still free?
Yes. The directory moved under /reference/icd-10/… with 301s from every old URL. Free human lookup stays free. We only gate programmatic access above the free tier.
Are you HIPAA compliant? SOC 2?
HIPAA yes — BAA self-serve on the dashboard. SOC 2 Type II is in progress with a target of Q3. Trust page lists current controls and sub-processors.
Stop gluing standards together.
The work's already done. Point a GET at it.