Patientary
NPI lookupICD-10 codesPricingAPI & MCPGuides
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NPI lookupICD-10 codesPricingAPI & MCPGuides
Sign inGet an API key

Guides

Healthcare data, explained plainly

No fluff, no fabricated numbers — real guidance on NPI numbers, the NPPES registry, ICD-10-CM codes and validation, written for billers, coders and the developers building on healthcare data.

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Software developers collaborating, representing choosing a healthcare API
ReviewsDevelopers27 Jul 2026· 9 min read

Best Healthcare & Medical APIs for Developers in 2026

Not every healthcare API does the same job. A category-by-category guide to provider identity, coding reference, FHIR/clinical, and claims APIs — and where PHI actually applies.

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Comparing options on a laptop, representing an NPI lookup tool evaluation
ReviewsDevelopers

NPI Lookup Tools Compared: NPPES vs Commercial APIs

The free government registry, paid commercial NPI APIs, and credentialing platforms with lookup bolted on — a fair, criteria-based comparison of what each is actually good at.

26 Jul 2026· 8 min
Person browsing a laptop, comparing free and paid ICD-10 lookup tools
ReviewsICD-10

Free vs Paid ICD-10 Lookup Tools: What You Actually Get

Free ICD-10 codes aren't a workaround — CDC/NCHS has always published the full set free. Here's what raw files, free lookups, and paid coding software each actually add.

25 Jul 2026· 7 min
Patientary

One lookup for every provider and every code — real CMS data, an honest answer, and an API your agents can call in a single line.

Patientary is an informational reference tool built on public data (CMS NPPES and the official ICD-10-CM release). It is not medical, coding, legal or billing advice, and code assignment is the responsibility of a qualified professional. Always verify against the primary source before you bill or file.

Lookups

  • NPI number lookup
  • ICD-10-CM code lookup
  • Provider taxonomy codes
  • Validate a code or NPI
  • Provider monitoring

Learn

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  • How to find a provider's NPI
  • How ICD-10 codes work
  • ICD-10 chapters
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Developers & agents

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  • API reference
  • MCP server
  • OpenAPI spec
  • llms.txt

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© 2026 Patientary. Not affiliated with CMS or NUCC. Built on public CMS NPPES + ICD-10-CM data.

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