Why is the patient population important in Indications for Use?

Defining the patient population, including age, weight, and specific conditions, helps ensure the device is used appropriately for patients for whom its safety and effectiveness have been established.

Can Indications for Use change?

Yes, changes to Indications for Use often require a new regulatory submission, such as a 510(k) or PMA supplement, as they can significantly impact a device's safety and effectiveness profile.

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RegulatoryRegulated PathwaysIFU (statement)

Indications for Use

Description of the disease or condition the device will diagnose, treat, prevent, cure, or mitigate.

Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed September 19, 2026

Definition

The Indications for Use statement is a specific statement of disease, condition, or anatomical site for which a device is intended, including the patient population. It is a formal part of a 510(k), De Novo or PMA, usually submitted on FDA Form 3881, and appears in the clearance or approval decision. Indications that differ from the predicate's may still allow substantial equivalence if the intended use is the same, but broader or new indications often raise new questions of safety and effectiveness.

What the regulation says

The FDA defines "Indications for Use" as a statement describing the disease or condition the device will diagnose, treat, prevent, cure, or mitigate, including the target patient population, as detailed in 21 CFR 814.20(b)(3)(i) for PMAs and 21 CFR 807.87(e) for 510(k) submissions. This statement establishes the boundaries for a device's permitted use and is a critical component of its regulatory submission and labeling.

What this means in practice

Indications for Use is a specific, regulatorily significant subset of intended use, captured in 510(k) and PMA decision summaries.

Examples

A continuous glucose monitor's Indications for Use state: "For use by people age 18 years and older with diabetes mellitus for the management of their diabetes through the measurement of glucose levels in interstitial fluid."
A surgical robot's Indications for Use specifies: "Intended for use in general laparoscopic surgical procedures to assist in the precise manipulation of instruments and visualization of the surgical field."
An in vitro diagnostic test's Indications for Use might declare: "For the qualitative detection of SARS-CoV-2 nucleocapsid protein antigen from nasal swab specimens collected from individuals suspected of COVID-19 by their healthcare provider within the first seven days of symptom onset."

Common pitfalls

•Confusing "Indications for Use" with "intended use" can lead to mislabeling and regulatory non-compliance.
•Failing to precisely define the patient population or conditions can result in a device being used off-label, creating safety risks.
•Inconsistent Indications for Use across different official documents, such as regulatory submissions and marketing materials, can trigger regulatory scrutiny.
•Not clearly delineating the specific disease or condition the device addresses can lead to ambiguity in its application and efficacy claims.
•Omitting contraindications or warnings within the labeling related to the Indications for Use can result in adverse events and regulatory actions.

Frequently asked questions

Indications for Use are a specific subset of intended use, detailing the medical conditions or purposes for which a device is intended. Intended use is a broader concept encompassing the general purpose of the device and how it achieves its function.

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Intended Use

The objective intent of the manufacturer regarding the use of the device.

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510(k) Premarket Notification(510(k))

FDA submission demonstrating a device is substantially equivalent to a legally marketed predicate.

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Premarket Approval(PMA)

FDA's most stringent device marketing application, required for high-risk Class III devices.

510(k) Fundamentals

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Predicate Device

A legally marketed device used as the comparator in a 510(k) submission.

Adjacent lesson

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De Novo Classification Request(De Novo)

Pathway to classify novel low- to moderate-risk devices that lack a predicate.

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Substantial Equivalence(SE)

The legal standard a 510(k) device must meet versus a predicate.

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Refuse to Accept(RTA)

FDA administrative decision that a submission is incomplete and won't be substantively reviewed.

Adjacent lesson

De Novo & Breakthrough Pathways

· From this learning path

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Breakthrough Device Designation(BDD)

FDA program providing expedited review for devices that treat life-threatening or irreversibly debilitating conditions.

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Combination Product

Product comprised of two or more regulated components - e.g., drug-device, biologic-device.

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Q-Submission (Pre-Submission)(Q-Sub / Pre-Sub)

Voluntary mechanism to obtain FDA feedback before a formal premarket submission.

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Pre-Submission Meeting(Q-Sub)

Formal FDA feedback request prior to a marketing or IDE submission.

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510(k) FundamentalsLesson 5 of 7
De Novo & Breakthrough PathwaysLesson 6 of 11

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Tier 2Regulator guidance and consensus· 2Tier 4Trade press and expert commentary· 1

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European Commission·1IMDRF·1RAPS·1

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Category: Regulatory
Acronym: IFU (statement)
Sources: 3
Updated: 9/19/2026

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Description of the disease or condition the device will diagnose, treat, prevent, cure, or mitigate.

·Indications for Use is a specific, regulatorily significant subset of intended use, captured in 510(k) and PMA decision summaries.
·It is a formal part of a 510(k), De Novo or PMA, usually submitted on FDA Form 3881, and appears in the clearance or approval decision.

Remember this

Watch out: Confusing "Indications for Use" with "intended use" can lead to mislabeling and regulatory non-compliance.

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