All codes in a 3-character category
API · /icd10-api
ICD-10 Codes API
healthy
4,258 Subscribers
The ICD-10-CM diagnosis code system as an API — 71,000+ International Classification of Diseases (10th revision, Clinical Modification) codes used in healthcare, billing and insurance. Look up any code (e.g. E11.9 → Type 2 diabetes mellitus without complications), search the classification by condition, or browse every code in a 3-character category. Ideal for EHR/EMR systems, medical billing, claims and health-tech tooling.
api.oanor.com/icd10-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 82 ms
- Server probes · 24h
- Subscribers
- 4,258
- active
- Total calls
- 80
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 2,000 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 2,000 calls/month
- 2 req/sec
- Lookup + search + category
- No credit card
Starter
€12.00 /month
- 40,000 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 40k calls/month
- 8 req/sec
- Condition search
- Email support
Pro
€39.00 /month
- 250,000 calls / month
- 20 requests / second
- Hard cap (429 above quota, no overage)
- 250k calls/month
- 20 req/sec
- EHR / billing integration
- Priority support
Enterprise
€120.00 /month
- 1,500,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 1.5M calls/month
- 50 req/sec
- Claims / health-tech platform
- Dedicated SLA
Built by
Related APIs
Other APIs with overlapping tags.
ATC Drug Classification API
The WHO ATC (Anatomical Therapeutic Chemical) drug classification as an API — 6,400+ codes organising every medicine into a 5-level hierarchy: anatomical main group → therapeutic subgroup → pharmacological subgroup → chemical subgroup → chemical substance. Look up any ATC code (e.g. A10BA02 → metformin, N02BE01 → paracetamol, J01CA04 → amoxicillin) with its full ancestor chain, direct children and WHO Defined Daily Doses (DDD); search drugs by name; or navigate the tree from the 14 anatomical main groups. Ideal for e-prescribing, pharmacy, clinical decision support, drug databases and health analytics.
api.oanor.com/atc-api
Clinical Calculator API
Standard clinical and nursing calculators as an API — the everyday medical maths, computed locally. The bsa endpoint computes body surface area from weight and height by the Mosteller, Du Bois and Haycock formulas (used for chemotherapy and drug dosing). The egfr endpoint estimates kidney function from serum creatinine, age and sex using the race-free CKD-EPI 2021 equation, and the Cockcroft-Gault creatinine clearance when a weight is given (creatinine in mg/dL or µmol/L). The drip-rate endpoint computes an IV infusion's drops per minute and millilitres per hour from the volume, time and drop factor. The gcs endpoint scores the Glasgow Coma Scale from its eye, verbal and motor components and gives the severity band. Everything is computed locally and deterministically, so it is instant and private. INFORMATIONAL ONLY — not medical advice; always verify with clinical judgement and approved tools. Ideal for healthcare and nursing apps, clinical decision-support prototypes, medical education, and EHR tooling. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is clinical maths; for drug reference data use a drug API and for BMI, BMR and calories use a health-calculator API.
api.oanor.com/medcalc-api
RxNorm API
US drug terminology as an API, powered by the U.S. National Library of Medicine's RxNav / RxNorm service. Resolve any drug or medication name to its RxNorm concept identifier (RxCUI); read a concept's properties (preferred name, term type, synonym, UMLS id); find all the related drug products for a name grouped by term type (brand names, ingredients, clinical and branded drugs, dose forms); walk related concepts by term type; list the drug classes a medicine belongs to across ATC, VA, mechanism of action, physiologic effect and chemical structure; and run spelling-tolerant search that returns candidate RxCUIs with match scores for misspelled or partial names. The standardised vocabulary that underpins US electronic health records and e-prescribing. Ideal for EHR and pharmacy systems, medication reconciliation, clinical-decision-support and health apps, and drug-data normalisation pipelines. RxCUIs are numeric.
api.oanor.com/rxnorm-api
US Hospitals API
Search and filter more than 5,400 Medicare-certified hospitals across the United States and territories: filter by state, city, free-text name, hospital type (acute care, critical access, psychiatric, childrens, veterans and more), ownership category, whether the hospital offers emergency services, and the CMS overall star rating. Look up any hospital by its CMS facility id, and read metadata listing every state with its hospital count plus the available types and ownership categories for building filter UIs. Each record returns the facility id, name, full address, county, phone number, type, ownership, emergency-services flag and overall rating. Built on the official CMS Hospital General Information dataset. Every endpoint accepts input via the query string or the request body and returns lean JSON. Pure server-side data (no third-party upstream), so responses are instant and always available. Ideal for healthcare directories, patient-facing apps, insurance and care-navigation tools, and research.
api.oanor.com/hospitals-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for ICD-10 Codes API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call ICD-10 Codes API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for ICD-10 Codes API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does ICD-10 Codes API cost?
ICD-10 Codes API has a free tier with 100 calls / month. Paid plans start at €12.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is ICD-10 Codes API GDPR-compliant?
All requests to ICD-10 Codes API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/icd10-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/icd10-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/icd10-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/icd10-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
Sign in to rate.
No reviews yet.
Discussion
Ask questions, share usage tips, get answers from the provider and other developers. Public — anyone can read.
Sign in to start a thread or reply.
Sign inNew thread
📌 Pinned
🔒 Locked
·
·
·
-
Provider answer
🔒 This thread is locked — no new replies.
-
·
- No threads yet — start the discussion.
Support
Private 1:1 support with the provider — billing questions, integration issues, account problems. Only you and the provider team can see these threads.
Sign in to open a support ticket.
Sign inOpen new ticket
Describe what you need help with. The provider team gets an email and replies on the ticket page.
-
·
Urgent - No tickets yet for this API.