Every FDA-classified medical device carries a three-letter product code in the CDRH database. That code determines the device class, the required regulatory pathway, and the scope of indications a manufacturer can legally claim. For commercial red light therapy, the most prevalent code is ILY: Lamp, Infrared, Therapeutic Heating, Class II, 21 CFR 890.5500.
Claims outside the strict ILY scope are not permitted under basic ILY registration. B2B buyers who do not ask about the product code cannot evaluate whether a vendor's marketing is within regulatory bounds. This guide explains the classification system, how to verify any device in the CDRH database, and the questions every buyer should ask.
ILY vs NHN Product Codes: How FDA Classifies Red Light Therapy Devices (And Why It Matters)
Most operators buying commercial red light therapy equipment spend considerable time comparing irradiance specs and warranty terms. Very few ask the question that cuts through all of the noise: what is your product code, and can I verify it in the FDA database? That question has a specific, documentable answer, and it tells you more about what a manufacturer is legally allowed to claim than any marketing sheet they will send you.
What Is an FDA Product Code and Where Does It Come From?
The FDA's Center for Devices and Radiological Health (CDRH) assigns every category of medical device a unique three-letter product code tied to a regulation number, device class, required regulatory pathway, and scope of intended use. The database is publicly searchable at no cost.
The product code describes a device category, not a specific brand. When a manufacturer registers an establishment and lists a device, they select the product code that matches what their device actually is and does. That selection determines which performance standards apply, whether premarket review is required, and which indications for use may appear on the label and in advertising.
A device registered under one product code cannot legally make claims that belong to a higher-risk code without completing the regulatory pathway that code requires. The product code question is not a technical formality. It is the most efficient way to understand the legal framework a manufacturer is operating within.
How Does FDA Classify Medical Devices by Risk?
The FDA classifies medical devices into Class I, Class II, and Class III based on risk and the control level required to ensure safety and effectiveness, per the Federal Food, Drug, and Cosmetic Act.
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Class I devices: Present minimal potential for harm, are subject only to General Controls (labeling, quality requirements, facility registration), and most are exempt from premarket notification.
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Class II devices: Present moderate risk and require General Controls plus Special Controls. Many require a 510(k) premarket notification demonstrating substantial equivalence to a legally marketed predicate device. ILY falls here, though it is currently exempt from the 510(k) premarket notification requirement under specific conditions.
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Class III devices: Present the highest risk and generally require Premarket Approval (PMA) backed by valid scientific evidence.
Commercial red light therapy devices are primarily Class II, but that class encompasses device types with very different permitted indications. That is why the product code matters.
What Does the ILY Product Code Authorize?
ILY is the product code for the Lamp, Infrared, Therapeutic Heating classification under 21 CFR 890.5500, covering devices that emit energy at infrared frequencies to provide topical heating. ILY is Class II. Devices meeting the definition of a therapeutic heating infrared lamp under this code are exempt from the 510(k) premarket notification requirement, subject to the limitations in 21 CFR 890.9.
Per established ILY-scope indications, registered devices may claim:
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Topical heating
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Temporary relief of minor muscle and joint pain and stiffness
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Temporary relief of minor arthritis pain
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Relaxation of muscle spasms
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Temporary increase of local circulation where applied
These five indications are the full boundaries of the ILY scope. They describe temporary physiological responses to therapeutic heating, grounded in decades of predicate devices. A device registered under ILY that claims outcomes beyond this scope is asserting indications its product code does not support.
The OvationULT by Body Balance System carries FDA Registration number 3010627475, product code ILY, Class II. Body Balance System is an FDA-registered manufacturer and makes no claims outside that registered scope.
What Are Other Relevant Product Codes in This Space?
The CDRH database includes several codes relevant to devices marketed as red light or infrared therapy equipment.
NHN covers powered light-based laser non-thermal instruments with non-heating effect, for adjunctive use in pain therapy, under 21 CFR 890.5500. NHN is Class II and requires a 510(k). A device claiming topical heating indications under NHN, or claiming non-heating adjunctive use under ILY, has a scope mismatch in either direction.
The code must match the device type, the mechanism of action claimed, and the indications on the label. When a manufacturer's marketing claims a mechanism their product code does not permit, that mismatch is a major compliance red flag.
ILY vs NHN: Side-by-Side Comparison
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Feature |
ILY |
NHN |
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Full Name |
Lamp, Infrared, Therapeutic Heating |
Powered light-based laser non-thermal instrument |
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Device Class |
Class II |
Class II |
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Regulation |
21 CFR 890.5500 |
21 CFR 890.5500 |
|
510(k) Required? |
Exempt (for therapeutic heating lamps) |
Yes |
|
Mechanism |
Topical heating via infrared emission |
Non-heating, non-thermal, adjunctive pain use |
|
Permitted Indications |
Topical heating, temporary relief of minor muscle/joint pain, relaxation of muscle spasms |
Adjunctive use in pain therapy or related indications |
Why the Product Code Determines What a Manufacturer Can Legally Claim
The FDA device classification system is the legal boundary within which a manufacturer operates once they list a device in the CDRH database. Marketing outside the scope of a registered product code is a regulatory compliance violation, not a marketing disagreement.
Out-of-scope claims have no regulatory backing because no predicate device record supports them. That affects informed consent documentation in clinical and wellness settings, how you represent the device to clients, and your facility exposure if a compliance question arises. The straightforward protection is to ask the product code question before you buy.
How to Verify a Product Code in the FDA CDRH Database
The verification process can be completed in four steps using the FDA publicly accessible databases:
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Step 1: Go to the FDA CDRH Product Classification database and enter the three-letter code to confirm the device name, class, regulation, and 510(k) requirements.
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Step 2: Search the FDA Establishment Registration database by the manufacturer name to confirm registration status and listed product codes.
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Step 3: Match the vendor marketing claims against the product code indications to ensure claims are fully supported by the code.
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Step 4: Search the FDA 510(k) Database for clearance numbers to confirm clearance corresponds to the specific model sold if they claim clearance.
This process takes under five minutes and can be completed before any purchase conversation reaches pricing.
What an ILY-Registered Device Cannot Claim
ILY registration does not authorize the following categories of claims, each of which would require a completely different regulatory pathway:
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Treatment or management of any specific disease or chronic illness
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Neuropathy treatment or chronic wound healing
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Wound healing or ulcer treatment
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Long-term structural skin changes or permanent tissue alteration
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Hormonal effects or endocrine regulation
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Neurological effects, cognitive function, or mood regulation
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Weight loss, fat reduction, or metabolic acceleration
A manufacturer claiming any of these outcomes for a device registered solely under ILY is asserting indications their product code does not support. For buyers in a regulated wellness or clinical environment, the distinction between claims with regulatory backing and those without matters for both compliance and liability.
What to Ask Any Red Light Therapy Manufacturer
These four questions take under two minutes and will tell you more than any spec sheet:
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"What is your product code?" Any manufacturer who knows their regulatory status can answer immediately with a three-letter code.
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"What is your FDA registration number?" A registration number is verifiable in the FDA Establishment Registration and Device Listing database. If the vendor cannot provide one, that is vital information before the purchase is made.
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"Do your marketing claims fall within the indications authorized by your product code?" If the marketing claims ILY-scope indications, the product code should be ILY or equivalent. If the claims extend to disease treatment or structural physiological change, ask which regulatory pathway covers them.
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"Is your establishment registration current?" FDA establishment registrations must be renewed annually. A lapsed registration is a compliance gap even if the original registration was legitimate.
How the OvationULT Fits This Framework
The OvationULT by Body Balance System is registered under FDA Registration number 3010627475, product code ILY, Class II, under 21 CFR 890.5500. Body Balance System is an FDA-registered manufacturer. The device delivers 65 mW/cm² irradiance, is indicated for sessions of 10 to 20 minutes, and supports the five ILY-scope indications above. Body Balance System makes no claims outside that scope. The registration is verifiable in the CDRH database using the number above, and the OvationULT is backed by an industry-leading five-year warranty.
Frequently Asked Questions
Is ILY the only product code used for commercial red light therapy devices?
No. ILY covers Lamp, Infrared, Therapeutic Heating for topical heating devices. NHN covers powered light-based laser non-thermal instruments for adjunctive use in pain therapy, which requires a 510(k). Buyers should confirm which code applies to the specific device being evaluated and verify that the permitted indications match the vendor claims.
If a device does not have a product code listed, can it still be legally sold in the U.S.?
Not necessarily. Medical devices intended for regulated commercial indications must be registered and listed in the CDRH database. A device sold without registration that falls within a classified device category is being marketed without proper authorization. Always verify the registration number independently before purchase.
What does "510(k) exempt" mean for ILY-registered devices?
ILY is currently classified as exempt from the 510(k) premarket notification requirement, subject to the limitations in 21 CFR 890.9. The manufacturer does not need to file a 510(k) before marketing, provided performance standards are met and the establishment is registered. Exempt status does not mean unregulated, as the device must still comply with General Controls and applicable Special Controls.
Can a manufacturer expand claims beyond the ILY scope?
No. Expanding intended use beyond the ILY scope requires assessing whether a different product code and corresponding regulatory pathway apply. Claiming treatment of a specific disease or chronic condition would likely require a 510(k) or PMA under a higher-risk classification. Making such claims without the corresponding pathway is a compliance violation.
Citations
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FDA CDRH Product Classification Database: ILY. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfPCD/classification.cfm?ID=ILY
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FDA CDRH Product Classification Database: NHN. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?ID=NHN
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21 CFR 890.5500: Infrared Lamp. Electronic Code of Federal Regulations. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=890.5500
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FDA Establishment Registration and Device Listing Search. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfrl/textsearch.cfm
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FDA 510(k) Premarket Notification Database. U.S. Food and Drug Administration. https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm