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MS-DRG Engine

Institutional Revenue.
Calculated instantly.

A standalone grouper for CMS V41/V42. Input codes, output MS-DRG, Reimbursement, and GMLOS benchmarks via UI, API, or Batch.

Try Grouper Tool API Documentation
Principal Diagnosis (MDC)
A41.9 (Sepsis, Unspecified)
MDC 18: Infectious & Parasitic Diseases
Secondary Diagnosis (CC/MCC)
J96.00 (Acute Respiratory Failure)
MCC DETECTED Moves to Severity Level 3
MS-DRG Output
871
Septicemia w/ MCC
Relative Weight 1.8921
Reimbursement $12,593.82

Decode the Algorithm.
Optimize the Revenue.

Stop guessing how a diagnosis affects the bill. Our engine exposes the entire grouping logic path, highlighting exactly which codes triggered a CC (Complication) or MCC (Major Complication).

  • Full Logic Path
    See how the principal diagnosis maps to the MDC, and how procedures split the DRG (e.g., with or without O.R.).
  • Hospital Specifics
    Configure your specific Base Rate, Geo-factors, and DSH adjustments for penny-perfect accuracy.

High-Volume Batching

Audit an entire year of claims in minutes. Upload a CSV, and we'll append the calculated MS-DRG, Weight, and GMLOS to every row.

Claim ID
Principal Dx
Procedures
Calc. DRG
Reimbursement
CLM-001
A41.9
5A1945Z
871
$12,593.00
CLM-002
I50.9
--
291
$7,240.50
CLM-003
J18.9
--
195
$4,120.10

Embed the Engine.

Integrate MS-DRG logic directly into your EHR, Analytics Dashboard, or Revenue Cycle tool. Simple REST API with comprehensive documentation.

Read API Docs
POST /v1/grouper
{
"version": "V41",
"principal_dx": "A41.9",
"secondary_dx": ["J96.00"],
"procedures": []
}

// Response
{
"drg": 871,
"title": "SEPTICEMIA OR SEVERE...",
"weight": 1.8921,
"mdc": 18
}

Start Grouping Today.

No integration required. Use the online tool or upload a batch file immediately.

Launch Grouper