IEC 62304:2006+A1:2015
Medical device software — Software life cycle processes
Standard Introduction
IEC 62304:2006+A1:2015 is the international standard defining life cycle requirements for medical device software. Originally published in 2006 with Amendment 1 added in 2015, it establishes a common framework for software development, maintenance, and risk management applicable to standalone software medical devices (SaMD), software components of medical devices, and software used in device production.
The standard introduces a three-tier safety classification system (Classes A, B, C) based on potential harm from software failure, with increasingly stringent development requirements for higher-risk classes. It defines structured processes spanning planning, requirements, design, implementation, verification, validation, release, and maintenance. IEC 62304 integrates closely with ISO 14971 for risk management and is recognized by the FDA and referenced as a harmonized standard under the EU Medical Device Regulation (MDR 2017/745).
Software Safety Classification
Classifies medical device software into three safety classes (A, B, C) based on potential harm, with increasingly rigorous requirements for higher-risk software.
Lifecycle Process Framework
Defines structured processes for planning, requirements analysis, design, implementation, verification, validation, release, and maintenance of medical device software.
Risk-Integrated Development
Integrates with ISO 14971 risk management, requiring systematic identification and mitigation of software-related hazards throughout the entire development lifecycle.
list_alt Software Lifecycle Processes
- Software development planning
- Software requirements analysis
- Software architectural and detailed design
- Software unit implementation and verification
- Software integration and integration testing
- Software system testing and release
- Software maintenance process
- Software risk management (integrated with ISO 14971)
Who Needs to Comply?
Manufacturers of medical devices that include software, software that is itself a medical device (SaMD), and software used in the production or maintenance of medical devices. Required for regulatory submissions to FDA, EU MDR, and most global medical device regulators.
Key Requirements
Software Safety Classification
Classify software systems and items into safety classes A (no injury possible), B (non-serious injury possible), or C (death or serious injury possible). Apply class-appropriate rigor throughout development.
Software Development Plan
Create a comprehensive software development plan covering lifecycle model, deliverables, traceability, configuration management, and verification/validation strategies before development begins.
Requirements & Traceability
Define complete software requirements including functional, performance, interface, and safety requirements. Maintain bidirectional traceability from requirements through design, implementation, and testing.
Verification & Validation
Perform unit testing, integration testing, and system testing appropriate to the software safety class. Validate that the software meets user needs and intended uses in the target environment.
Software Maintenance
Establish a maintenance process to track and evaluate feedback, implement modifications (corrections, enhancements, adaptations), and manage the impact of changes on safety and performance.
Penalties & Enforcement
No direct penalties for non-compliance with IEC 62304 itself. However, regulatory authorities (FDA, EU Notified Bodies) require conformity to IEC 62304 for medical device market access. Non-compliance can result in rejection of regulatory submissions, product recalls, and market withdrawal.