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CIE-10 API vs openFDA API

Same instrument, two spec sheets — measured, not claimed.

APICIE-10 APINEW—openFDA APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit120 req/window · 119 remaining · resets 1783518425Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIE-10 API vs openFDA API: common questions

Which is more reliable, CIE-10 API or openFDA API?

On our scheduled checks, openFDA API leads on measured uptime — CIE-10 API at —% versus openFDA API at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do CIE-10 API and openFDA API need an API key?

Neither needs a paid key — CIE-10 API is callable with no signup, and openFDA API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CIE-10 API and openFDA API from the browser?

Only CIE-10 API is browser-friendly — it returns CORS headers over HTTPS. openFDA API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CIE-10 API and openFDA API free for commercial use?

CIE-10 API has unclear commercial terms, and openFDA API has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.