All terms
Quality & RiskQuality System
Complaint Handling
Process for receiving, evaluating, and responding to device complaints.
Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 5, 2026
Definition
Per 21 CFR 820.198, manufacturers must maintain procedures for receiving, reviewing, and evaluating complaints, with timely investigation and - when reportable - submission to FDA under 21 CFR Part 803. What the regulation says
Complaint handling is a critical post-market surveillance activity mandated by various regulatory bodies. For instance, the FDA, under 21 CFR 820.198, requires medical device manufacturers to establish and maintain procedures for receiving, reviewing, and evaluating complaints. Similarly, the EU Medical Device Regulation (EU MDR) Annex I, Section 3, emphasizes the importance of a quality management system that includes post-market surveillance activities, explicitly covering the handling of complaints. Furthermore, ISO 13485:2016, clause 8.2.2, details requirements for complaint handling processes as part of the overall quality management system.What this means in practice
Complaint handling is the entry point for the post-market feedback loop, feeding CAPA, vigilance, and risk management updates.Examples
- A medical device manufacturer receives a report from a hospital indicating that a surgical instrument malfunctioned during a procedure, requiring a procedure to be restarted.
- A patient contacts a MedTech company via their website to report an unexpected side effect experienced after using a new diagnostic device.
- An internal quality control team identifies a trend of similar issues across multiple devices during routine complaint review, prompting a broader investigation.
Common pitfalls
- •Failure to define clear criteria for what constitutes a complaint can lead to underreporting or misclassification.
- •Inadequate investigation of complaints can result in recurring issues and potential harm to patients.
- •Delay in reporting reportable events to regulatory authorities can lead to severe non-compliance penalties.
- •Treating complaints solely as customer service issues rather than critical quality data can prevent effective corrective actions.
- •Insufficient documentation of complaint investigations and resolutions can lead to audit findings and regulatory scrutiny.
Frequently asked questions
The primary purpose is to systematically receive, evaluate, and investigate feedback about potential issues with a medical device, ensuring product safety and quality.
Cross-references
Related terms
Shared paths + categoryQuality & Risk
Corrective and Preventive Action(CAPA)
Systematic process to investigate and resolve quality issues and prevent recurrence.
QMS Foundations · adjacentPost-Market Mastery · adjacent
Post-Market
Medical Device Reporting (FDA)(MDR)
FDA mechanism for receiving reports of device-related deaths, serious injuries, and malfunctions.
Post-Market Mastery · adjacent
Post-Market
Medical Device Vigilance
Reporting and management of serious incidents and field safety corrective actions.
Post-Market Mastery
Quality & Risk
FDA Form 483
Notice of inspectional observations issued at the conclusion of an FDA inspection.
QMS Foundations · adjacent
Quality & Risk
Design Controls
Structured process governing the design of medical devices.
QMS Foundations
Quality & Risk
Design History File(DHF)
Compilation of records describing the design history of a finished device.
QMS Foundations
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Primary references
3 sourcesLink health: 3 verified· last checked 2026-06-20
eCFR·1MDIC·1FDA·1
- 121 CFR 820.198VerifiedeCFRecfr.gov
- 2MDIC Case for QualityVerifiedMDICmdic.org
- 3FDA - Quality SystemsVerifiedFDAfda.gov
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