Description
Almost from the enactment of the Medical Device Amendments to the Federal Food, Drug, and Cosmetic Act (the FD&C Act) in 1976, the Food and Drug Administration (FDA or the Agency) has attempted to define with greater clarity when a change in a medical device would trigger the requirement that a manufacturer submit a new premarket notification (510(k)) to the Agency.This documentsupersedes FDA’s guidanceDeciding When to Submit a 510(k) for a Change to an Existing Device (K97-1), issued on January 10, 1997. This guidance is not intended to implement significant policy changes to FDA’s current thinking on when submission of a new 510(k) is required. Rather, the intent of this guidance is to enhance the predictability, consistency, and transparency of the “when to submit” decision-making process by providing a least burdensome approach, and describing in greater detail the regulatory framework, policies, and practices underlying such a decision.
Scope & Applicability
Product Classes
10Validation of certain in vitro diagnostic devices (IVDs) for emerging pathogens; Validation of certain IVD devices for emerging pathogens
A manufacturer changes the material of its catheter
change from untreated surface to acid-etched; The manufacturer of a dental implant changes the surface
performance characteristics of a biliary stent are critical to safety
example of a device where certain features are more critical than others
Specific category of medical device mentioned for EUA.
example of a device undergoing a length change; change in length of the catheter
Example 6: In vitro diagnostic for Candida species susceptibility
In vitro diagnostic product mentioned in compatibility examples
specific guidance for changes to daily wear contact lenses
Stakeholders
7Entity required to conduct postmarket surveillance; entity responsible for submitting postmarket surveillance plans; Entity holding the approved PMA, HDE, or cleared 510(k); The entity responsible for conducting postmarket surveillance and submitting reports.; Entity that can use the checklist as a reference for submissions.
The person who possesses the 510(k) clearance for a device.
intended users in an over-the-counter use scenario
person reviewing chemical composition differences
entity providing materials for device manufacturing
Exempt from 510(k) if satisfying specific requirements
Entity that significantly changes finished device performance
Regulatory Context
Attributes
10An increase in this attribute generally does not require a new 510(k) if protocols are met.
Base formulation of a polymer or alloy plus additives.
Property of a device that may be changed via established protocols
change in packaging or expiration dating
polymer B has a different chemical formulation
Factor used to assess the likelihood of a hazard.
factor in determining whether a device change significantly affects safety
material in question should have the same formulation or chemical composition
Could the change significantly affect the performance or biocompatibility of the device?; Property of packaging material evaluated after supplier change; determine if processing could affect the biocompatibility of the device
whether the device is provided for single-patient, single-use.; A device that is intended for one use or on a single patient during a single procedure
Identified Hazards
Hazards
10Unexpected safety issues identified postmarket
The combination of the probability of occurrence of harm and the severity of that harm
Risk associated with rusting components in guidewires.
there have been no issues with rusting (which could introduce embolic particles)
The risk assessment identifies that the new formulation presents a new biocompatibility risk.
severity of potential thermal injury increased with higher-powered heater
risk identified in biliary stent material change
risk identified in biliary stent material change
Risk identified in IVD performance degradation
Risk identified in IVD performance degradation
Related CFR Sections (10)
- 21CFR814.20§ 814.20 Application.
(a) The applicant or an authorized representative shall sign the PMA. If the applicant does not reside or have a place of business within the United States, the PMA shall be countersigned by an authorized representative residing or maintaining a place of business in the United States and shall identRead full regulation →
- 21CFR820.40§ 820.40 [Reserved]
- 21CFR809.10§ 809.10 Labeling for in vitro diagnostic products.
(a) The label for an in vitro diagnostic product shall state the following information, except where such information is not applicable, or as otherwise specified in a standard for a particular product class or as provided in paragraph (e) of this section. Section 201(k) of the act provides that “a Read full regulation →
- 21CFR807.81§ 807.81 When a premarket notification submission is required.
(a) Except as provided in paragraph (b) of this section, each person who is required to register his establishment pursuant to § 807.20 must submit a premarket notification submission to the Food and Drug Administration at least 90 days before he proposes to begin the introduction or delivery for inRead full regulation →
- 21CFR807.20§ 807.20 Who must register and submit a device list?
(a) An owner or operator of an establishment not exempt under section 510(g) of the Federal Food, Drug, and Cosmetic Act or subpart D of this part who is engaged in the manufacture, preparation, propagation, compounding, assembly, or processing of a device intended for human use shall register and sRead full regulation →
- 21CFR807.100§ 807.100 FDA action on a premarket notification.
(a) After review of a premarket notification, FDA will:Read full regulation →
- 21CFR807.85§ 807.85 Exemption from premarket notification.
(a) A custom device is exempt from premarket notification requirements of this subpart if the device is within the meaning of section 520(b) of the Federal Food, Drug, and Cosmetic Act.Read full regulation →
- 21CFR820.3§ 820.3 Definitions.
The definitions in ISO 13485 and in Clause 3 of ISO 9000 (incorporated by reference, see § 820.7 ) apply to this part, except as specified in paragraph (b) of this section, and do not affect the meaning of similar terms defined in this title.Read full regulation →
- 21CFR801.4§ 801.4 Meaning of intended uses.
The words intended uses or words of similar import in §§ 801.5 , 801.119 , 801.122 , and 1100.5 of this chapter refer to the objective intent of the persons legally responsible for the labeling of an article (or their representatives). The intent may be shown by such persons' expressions, the designRead full regulation →
- 21CFR807.92§ 807.92 Content and format of a 510(k) summary.
(a) A 510(k) summary shall be in sufficient detail to provide an understanding of the basis for a determination of substantial equivalence. FDA will accept summaries as well as amendments thereto until such time as FDA issues a determination of substantial equivalence. All 510(k) summaries shall conRead full regulation →
Related Warning Letters (10)
- 2025-12-09
CGMP/QSR/Medical Devices/Adulterated
Envoy Medical Inc.
- 2025-11-25
CGMP/QSR/Medical Devices/Adulterated
Hong Qiangxing Shenzhen Electronics Limited
- 2025-10-28
CGMP/QSR/Medical Devices/Adulterated
Contec Medical Systems Co., Ltd.
- 2025-10-28
CGMP/QSR/Medical Devices/Adulterated/Misbranded
Royal Philips
- 2025-10-28
CGMP/QSR/Medical Devices/Adulterated/Misbranded
Qianjiang Kingphar Medical Material Co Ltd.
- 2025-10-21
CGMP/QSR/Medical Devices/Adulterated
LEVO AG
- 2025-10-07
CGMP/QSR/Medical Devices/Adulterated
Technological Medical Advancements LLC
- 2025-09-30
Medical Device Reporting/Misbranded
Insung Medical Co. Ltd.
- 2025-09-23
Medical Device/Adulterated/Misbranded/Lacks PMA and/or 510(k)
The Richline Group, Inc.
- 2025-09-16
Investigational Device Exemptions (IDE)/Premarket Approval Application (PMA) Adulterated Device
SeniorLife Technologies, Inc.
See Also (8)
- Pharmacogenetic Tests and Genetic Tests for Heritable Markers: Guidance for Industry and FDA Staff (Status: Final)
- New Contrast Imaging Indication Considerations for Devices and Approved Drug and Biological Products: Guidance for Industry (Status: Final)
- The Content of Investigational Device Exemption (IDE) and Premarket Approval (PMA) Applications for Artificial Pancreas Device Systems: Guidance for Industry and Food and Drug Administration Staff (Status: Final)
- Humanitarian Device Exemption (HDE) Program: Guidance for Industry and Food and Drug Administration Staff (Status: Final)
- Multiple Function Device Products: Policy and Considerations: Guidance for Industry and Food and Drug Administration (Status: Final)
- Patient-Matched Guides to Orthopedic Implants: Draft Guidance for Industry and Food and Drug Administration Staff (Status: Draft)
- Marketing Submission Recommendations for a Predetermined Change Control Plan for Artificial Intelligence-Enabled Device Software Functions: Guidance for Industry and Food and Drug Administration Staff (Status: Final)
- Considerations for Design, Development, and Analytical Validation of Next Generation Sequencing (NGS) - Based In Vitro Diagnostics (IVDs) Intended to Aid in the Diagnosis of Suspected Germline Diseases: Guidance for Stakeholders and Food and Drug Administration Staff (Status: Final)