Year: 2026
Type: book-chapter
Abstract: Classifying medical software by risk level is not a bureaucratic exercise, but an act of honesty: recognizing that not all failures have the same consequences and that, therefore, not all developments deserve the same level of scrutiny."Imagine we are in a planning meeting for a new healthcare software project.Someone asks, "What level of regulatory requirements should we apply?"Eyes dart around; no one is sure of the answer.Some believe that since it is just software, it should be a light-touch approach.Others, more cautious, suggest applying everything the standards require, just in case.The discussion drags on aimlessly because a fundamental element is missing: the actual risk of the product has not been analyzed.The most basic question has not been answered: what happens if this fails?Depending on the answer, regulatory requirements can vary enormously, from a relatively simple process to a development process with exhaustive controls at every stage.This gradation is not an invention of each team but is clearly defined in an international standard that forms the backbone of medical software development: IEC 62304.IEC 62304 is likely the most important standard that any medical software developer must know.(1)Its full title is "Medical device software-Software life cycle processes," and it establishes a framework for all development activities, from initial planning through maintenance once the product is on the market.What makes this standard particularly valuable is that it is not an abstract set of good intentions but a concrete specification of tasks, documentation, and responsibilities that must be fulfilled depending on the software's risk level.It is, in a sense, a practical guide that says: if your software is low-risk, do this; if it is medium-risk, do that; if it is high-risk, go this far.This proportionality is its greatest strength and makes it applicable to a wide range of products, from the simplest to the most critical.In this chapter, we explore in detail the fundamental aspects of IEC 62304, starting with the concept that underpins everything: software safety classification.We will see what each class means, how to determine which one applies to each product, and what practical implications that classification has for the development process.It is not a matter of memorizing a table but of understanding the logic underlying the classification because that logic is the same one that should guide any design decision when patient safety is at stake.Understanding IEC 62304 means understanding how to build medical software in a systematic and responsible manner, and it is also the first step toward navigating with confidence the regulatory maze that so many developers fear.
Language: English
Subfield: Safety, Risk, Reliability and Quality
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
OpenAlex ID: W7216512866