vs. legacy installs
APIs, not installs
The incumbents ship DLLs, desktop encoders, and quarterly update disks. Quantara is a POST request — always current, nothing to deploy or patch, no per-seat licenses.
Quantara Health · DRG Grouper API
The DRG grouper that explains itself.
MS-DRG assignment as one POST request — with severity analysis, Medicare Code Editor checks, and a step-by-step decision path behind every answer. Built for revenue cycle teams and the systems they run, from nightly claims pipelines to AI copilots. Versioned against every CMS release.
REST + MCP · Deterministic · CMS v43.1 live today · Pricing from $199/mo
01
Policy as code
Payment policy is law, and the law ships quarterly. We ship it as versioned code.
Today the rules that decide what a claim pays live in PDFs, federal registers, and desktop software with quarterly update disks. Every grouper release, code edit, and severity rule should instead be an endpoint you can call, a version you can pin, and a diff you can read. When CMS changes the rules, you bump a version string — not a work order.
And the answer doesn't care who's asking: the same deterministic result serves your claims pipeline, your analyst's afternoon script, and — when you're ready — the AI copilot your team is piloting.
vs. PDFs and manuals
Versioned, not vague
Pin a rule version like a dependency. Diff one grouper release against the next. Reprice last year's claims under this year's rules.
ready for what's next
Deterministic, not probabilistic
When you do put an AI copilot or autonomous coder to work, it needs a tool that computes the answer the same way every time — and cites the rule version behind it. Quantara is built to be that tool.
02
The product
One tool, done right: the MS-DRG grouper. The rest of the payment-policy layer follows — built in the order you ask for it.
POST /v1/group · POST /v1/group/batch
DRG Grouper API
- MS-DRG from ICD-10 diagnoses, procedures, and demographics — CMS version resolved from the discharge date, pinnable per request
- Severity analysis: MCC, CC, and exclusions itemized per code
- Medicare Code Editor checks on every call
- A step-by-step decision_path — the answer and the why, citable by humans and agents
- Batch up to 100 cases per call; warm responses in milliseconds
03
Quickstart
One request in, one defensible answer out. The CMS version is resolved from the discharge date, returned in the response, and reproducible forever. Try it live in the docs →
Request
curl https://api.quantarahealth.com/v1/group \
-H "Authorization: Bearer $QH_TOKEN" \
-d '{
"discharge_date": "2026-07-01",
"principal_diagnosis": "I21.4",
"secondary_diagnoses": ["E11.9"],
"secondary_diagnosis_poa": { "E11.9": "Y" },
"procedures": ["027034Z"],
"age": 67,
"sex": "F",
"discharge_status": "01"
}'Response — 200
{
"request_id": "req_8f3a…",
"ms_drg": "322",
"title": "Percutaneous Cardiovascular
Procedures with Intraluminal
Device without MCC",
"mdc": "05",
"cms_version": "43.1",
"effective_date_range": {
"start": "2026-04-01",
"end": "2026-09-30"
},
"mce_edits": [],
"warnings": ["PYTHON_CMS_ALGORITHM_PARTIAL: …"],
"billable_units": 1
}
04
Free DRG calculator
See it work before you write a line of code.
The same engine, in your browser: enter diagnoses, procedures, and demographics — get the DRG with severity chips, MCE edits, and the full decision path. No key, no signup. Send it to your coders and CDI team; send the API to your engineers.
05
Use cases
What people actually do with the DRG Grouper, starting day one of the trial. Each of these is one endpoint call — no implementation project.
Catch the DRG problem before the claim leaves
Group every inpatient claim pre-bill and compare against the coded DRG: mismatches, missed CC/MCC capture, and Medicare Code Editor errors surface while the claim is still fixable — not three weeks later on a denial. One pipeline pass, no per-seat encoder licenses.
A citable answer for every chart — human or copilot
Coders, CDI specialists, and the AI copilots working alongside them call /v1/group and get back the DRG plus a step-by-step decision_path — every answer cites a CMS rule version. Query a case with and without a suspected MCC to show exactly what the documentation is worth.
Reprice any book under any rule version
Push historical claims through /v1/group/batch under this year's grouper — or last year's — and quantify trend, contract, and rule-change impact before it lands. Versioned responses make every number reproducible for peer review.
Verify the billed DRG against the clinical picture
Regroup submitted claims from their coded diagnoses and procedures and flag where the billed DRG doesn't match — with the severity analysis and decision path as your audit evidence.
Not a developer? The free DRG calculator runs the same engine in your browser — no key, no signup.
06
Pricing
Transparent, usage-based, and public — no "contact us for a quote" to find out what a grouper costs.
Trial
Free
14 days · 1,000 calls · Starter
- Instant key, no credit card
- Full API: single + batch grouping
- Severity analysis & decision paths
Starter
$199/mo
10,000 calls included
- Live production keys
- $0.02 per additional call
- Email support
Growth
$499/mo
50,000 calls included
- Everything in Starter
- $0.01 per additional call
- Priority support & usage reporting
Enterprise
Custom
Volume pricing
- BAA & SLA
- Unlimited volume, batch pipelines
- Dedicated support
Start a 14-day Starter trial without a card. Stripe emails you before it ends; add payment details to keep the same API key active. Every plan runs the same engine, same accuracy, and same versioning.
07
Try it free
A real API key, in thirty seconds.
- 14-day Stripe Billing trial with 1,000 calls — no credit card required
- Runs against the production grouping engine, not a sandbox clone
- Full group:write access: single and batch grouping
- Versioned responses with severity analysis and decision paths
Stripe emails you before the trial ends. Add payment details from that reminder and the same key stays active. Need Growth, a BAA, or custom volume? Book a call.
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First production request
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08
Data & security
Stateless by design.
Requests are processed and answered — grouping doesn't require us to keep your claims. Every response carries its rule version and an audit log, so whenever a pipeline, an analyst, or an agent acts on a number, you can prove exactly where it came from. Your compliance team meets no surprises.
The basics, handled
- BAA available
- TLS everywhere
- Versioned responses
- Audit logging
- Sandbox keys
- 99.9% uptime target
09
Talk to us
Ready for production?
Already tried your free key? Book a call to talk production volumes, usage-based pricing, BAAs, and SLAs — or tell us what you're building and we'll map the integration with you.