What is an MS-DRG grouper?

An MS-DRG grouper is a software tool that assigns Medicare Severity-Diagnosis Related Groups (MS-DRGs) based on patient diagnoses, procedures, age, sex, and discharge status. This grouping is essential for Medicare reimbursement and billing purposes.

Is this MS-DRG grouper free to use?

Yes, this online MS-DRG grouper is completely free to use. There's no registration required, no login needed, and no software to install. Just enter your codes and get instant results.

What features does this DRG grouper include?

Our grouper includes real-time ICD-10 code validation, MCE (Medicare Code Editor) edits, Hospital Acquired Condition (HAC) logic, CC/MCC validation, and Present on Admission (POA) indicator support. It provides instant results and supports all current Medicare MS-DRG versions.

How accurate is this DRG grouper?

This grouper is based on official CMS specifications and is regularly updated with the latest Medicare rules. While highly accurate, it should be validated against your official grouper software for compliance purposes.

Can I process multiple records at once?

While our free online tool processes one record at a time, we offer bulk processing services for large datasets. Contact us for information about processing multiple records for audits, analysis, or EMR validation.

Which MS-DRG versions are supported?

We support multiple MS-DRG versions including V42.0 (FY2025), V41.0/V41.1 (FY2024), and V40.0/V40.1 (FY2023). You can select your desired version when grouping.

BETA

Independent MS-DRG Implementation

This is an independent implementation of the CMS MS-DRG grouping logic based on publicly available specifications. Currently in beta, the grouper aims to provide accurate DRG assignments but should be validated against your official grouper software. Not affiliated with or endorsed by CMS.

MS-DRG Grouper

Online tool to instantly determine Medicare DRG assignments from diagnosis & procedure codes

Current version: v42.0 FY2025

Patient Demographics

For HIPAA compliance, fields such as Patient Name, MRN, and Birth Date have been excluded from processing to ensure protection of PHI (Protected Health Information).

* Required field

Age *

Default age is set to 65 based on typical patient demographics.

Sex *

Discharge Status *

MS-DRG Grouper Version *

To reduce PHI, select a version of the grouper where your admit or discharge date falls between.

Effective Dates:
V40.0: 10/01/2022 - 03/31/2023
V40.1: 04/01/2023 - 09/30/2023
V41.0: 10/01/2023 - 03/31/2024
V41.1: 04/01/2024 - 09/30/2024
V42.0: 10/01/2024 - 09/30/2025

Clinical Information

Search by code or description (e.g., "A001" or "cholera")

Primary Diagnoses

Admit Diagnosis *

Principal Diagnosis *

Secondary Diagnoses

Procedures

Results

-

No DRG Assigned

Base DRG

Weight

Type

Major Diagnostic Category

- No MDC Assigned

HAC Impact

No HAC impact

Diagnosis Details

Procedure Details

MCE Edits

About

Hey there! 👋 I built this tool to make DRG grouping easier for everyone. Whether you're coding a single chart or validating your EMR's grouper output, this tool has you covered. No more waiting for software updates or dealing with complicated installations!

Just enter your codes, and we'll handle all the complex Medicare rules, HAC logic, and MCE edits behind the scenes.

Simple & Quick

Get DRG assignments in seconds with a clean, intuitive interface

Privacy First

Only uses codes and minimal demographics - no PHI needed

Free to Use

No registration or software installation needed

Instructions

1. Enter Demographics

2. Add Diagnoses

3. Add Procedures

4. POA Indicators

5. Review Results

Independent MS-DRG Implementation

MS-DRG Grouper

Patient Demographics

For HIPAA compliance, fields such as Patient Name, MRN, and Birth Date have been excluded from processing to ensure protection of PHI (Protected Health Information).

Clinical Information

Primary Diagnoses

Secondary Diagnoses

Procedures

Results

-

HAC Impact

Diagnosis Details

Procedure Details

MCE Edits

About

Instructions

1. Enter Demographics

2. Add Diagnoses

3. Add Procedures

4. POA Indicators

5. Review Results

Independent MS-DRG Implementation

MS-DRG Grouper

Patient Demographics For HIPAA compliance, fields such as Patient Name, MRN, and Birth Date have been excluded from processing to ensure protection of PHI (Protected Health Information).

Clinical Information

Primary Diagnoses

Secondary Diagnoses

Procedures

Results

-

HAC Impact

Diagnosis Details

Procedure Details

MCE Edits

About

Share Your Feedback

Patient Demographics

For HIPAA compliance, fields such as Patient Name, MRN, and Birth Date have been excluded from processing to ensure protection of PHI (Protected Health Information).