What the Shift from QSR to QMSR Means for Medical Device Manufacturers

Medical device manufacturers operate in one of the most highly regulated industries in the world. Quality systems govern how devices are designed, tested, manufactured, and monitored after release. For decades, companies selling devices in the United States followed the FDA’s Quality System Regulation (QSR), 21 CFR Part 820.  

As of February 2, 2026, that regulatory framework has officially changed.  

The FDA has replaced the traditional QSR with the Quality Management System Regulation (QMSR), a new rule that aligns FDA quality requirements with ISO 13485:2016, the internationally recognized standard for medical device quality systems. 

In this article, I’ll explain: 

• What QSR and QMSR are
• Why the FDA made this change
• How QMSR affects medical device manufacturers

What Was the FDA’s QSR?

The Quality System Regulation (QSR) governed U.S. medical device manufacturing since 1996. It established the requirements manufacturers had to follow to ensure their products were safe, effective, and consistently produced. 

QSR covered several quality system requirements, including product design, supplier controls, manufacturing processes, and corrective actions. 

Core Elements of the QSR Framework

QSR Requirement	Purpose
Design Controls	Ensure devices meet user needs and regulatory requirements
Document Controls	Maintain traceable documentation for quality activities
Purchasing Controls	Ensure suppliers meet quality standards
Production & Process Controls	Maintain consistent manufacturing processes
CAPA (Corrective and Preventative Actions)	Identify and correct product or process issues
Complaint Handling	Monitor device performance aftermarket release

While QSR established strong requirements, it was also unique to the FDA. Manufacturers selling devices globally often had to maintain (at least) two quality systems: one for QSR compliance and another for ISO 13485 certification. 

What Is QMSR?

The Quality Management System Regulation (QMSR) replaces QSR and incorporates ISO 13485:2016 by reference. 

Instead of maintaining a separate FDA-specific framework, manufacturers now follow a globally recognized quality management structure, while still meeting FDA oversight requirements. What’s important to understand is that this transition was done to harmonize the U.S. and international standards. 

Objectives of the QMSR Rule

• Align U.S. quality system requirements with global standards
• Reduce duplication for manufacturers operating internationally
• Improve consistency across regulatory frameworks
• Maintain strong patient safety protections

For many manufacturers that already operate under ISO 13485, the transition primarily involves aligning documentation and procedures with the new FDA framework. 

QSR vs. QMSR: What Changed?

Although many quality principles remain the same, the structure and philosophy behind the regulation have shifted.  

Key Differences Between QSR and QMSR

Category	QSR (21 CFR Part 820)	QMSR
Regulatory Framework	FDA-specific regulation	ISO 13485-based regulation
Global Alignment	Limited	Strong international harmonization
Risk Management	Less integrated	Risk-based approach throughout lifecycle
Documentation	FDA-defined quality documentation	ISO-based quality management structure
Supplier Management	Purchasing controls	Broader supplier quality management
Quality Culture	Compliance-driven	Continuous improvement focus

The most important shift is the integration of risk management and lifecycle thinking into the quality system. Under QMSR, risk is expected to be considered throughout product design, development, manufacturing, and post-market monitoring. 

How the Change Affects Medical Device Manufacturers

Now that QMSR is in effect, medical device companies must ensure their quality management systems align with ISO 13485 requirements while still meeting FDA expectations. 

For companies already operating under ISO certification, the adjustment may be relatively small. For organizations that relied solely on QSR compliance, the change may require more significant quality system updates. 

Areas Most Likely to Be Impacted

Functional Area	Potential Changes
Quality Management	Alignment with ISO 13485 structure
Risk Management	Stronger integration across the product lifecycle (see more below)
Supplier Quality	Expanded supplier qualification and monitoring
Documentation	Updates to SOPs and quality manuals
Internal Auditing	ISO-style internal audit programs (FDA and ISO don’t have time to audit as regularly as they’d like to, so more frequent internal auditing will reduce product and patient risk.)
Training	Staff education on updated processes

A lot of companies are also using the transition as an opportunity to modernize and streamline their quality systems. 

Greater Emphasis on Risk-based Quality Management

One of the defining characteristics of ISO 13485 is the emphasis on risk-based thinking. Risk management is no longer limited to product design but must be integrated across all quality processes. This often involves alignment with ISO 14971:2019, the international standard for medical device risk management.  

Risk-based product lifecycle approach

This lifecycle approach helps manufacturers identify potential issues earlier and reduce the likelihood of product failures or safety risks. 

User Needs → Design & Development → Risk Analysis → Verification & Validation → Manufacturing Controls → Post-market Monitoring → Continuous Improvement

Most Common QMSR Implementation Challenges

• Documentation updates: Aligning procedures with ISO terminology
• Quality manual restructuring: Converting QSR-based systems 
• Training requirements: Educating teams on ISO-style processes 
• Supplier requalification: Updating supplier management practices 
• Audit readiness: Preparing for updated FDA inspection approaches 

Organizations that proactively address these areas will be better positioned to avoid compliance risks during future inspections.  

Benefits of QMSR for Medical Device Companies

Regulatory changes can initially feel disruptive, but the QMSR transition does provide several advantages for medical device manufacturers. 

1. Reduced Regulatory Duplication

Manufacturers that previously maintained separate systems for FDA and ISO compliance can now operate under a single harmonized quality system. This will increase transparency for FDA inspections, as ISO and FDA inspections are done by different governing bodies. In the past, this would be a cumbersome process that caused gaps and potential risks to products and patients.  

2. Easier International Market Access

It has long been a costly and time-consuming effort to comply with EU MDR standards for OEMs across the European market. ISO 13485 alignment simplifies entry into many global markets, including: 

• Europe (EU MDR environment) 
• Canada 
• Australia 
• Japan 

3. Improved Quality Systems

ISO-based frameworks emphasize continuous improvement, process control, and proactive risk management, which all strengthen product quality and operational efficiency. 

Need Help Navigating the QSR to QMSR Transition?

At DISHER Engineering, we partner with medical device companies to support product development, quality systems, and manufacturing readiness. Our engineers know the regulatory landscape and can help your team design devices and processes that align with FDA and ISO expectations from the start.  

If your organization is looking for help reaching QMSR compliance, we can support with:  

• Medical device product development 
• Design controls and risk management 
• Manufacturing process development and validation 
• Quality and regulatory readiness 

Contact us online to start the conversation.