Importing Korean Medical Devices: Why an FDA 510(k) Is Only Half the Gate for X-ray Equipment

Korean medical devices are gaining ground in world markets. The Korea Health Industry Development Institute (KHIDI) put 2024 medical device exports at about USD 5.8 billion, of which the United States, at roughly USD 930 million, was the largest market for the second year running. Diagnostic imaging equipment like ultrasound and X-ray leads the export mix.

If you source Korean X-ray imaging equipment for the US, though, the tariff is not the problem: it is already zero. The real gate is not the ship but the US Food and Drug Administration (FDA), and an X-ray device has to pass a gate that other products clear once, twice.

A C-arm X-ray is both a 'medical device' and a 'radiation-emitting product'

A device that fires X-rays to produce an image, like a mobile C-arm, falls under two separate US legal regimes at the same time. One regulates it as a medical device. The other regulates it as an electronic product that emits radiation. The first asks whether the device is safe and effective; the second asks whether the radiation it emits meets a safety performance standard. The two are separate, and clearing one does not exempt the other.

Food and cosmetics carry no such dual structure. It is specific to radiation-emitting medical devices like X-ray, CT and fluoroscopy equipment, and a manufacturer who prepares only the device clearance, unaware of this structure, will see cargo held at the US border for missing radiation paperwork. So the two gates have to be designed together.

The first gate: the 510(k) premarket notification

The first gate on the medical-device side is premarket clearance. A mobile C-arm image-intensified fluoroscopic X-ray system is a Class II medical device in the US (21 CFR 892.1650), and most Class II devices need a 510(k) premarket notification before they can reach the market.

The heart of a 510(k) is substantial equivalence. You name a similar device already legally sold in the US (the predicate) and show that yours is substantially equivalent to it in intended use and technological characteristics, and as safe and effective. Unless the device works on an entirely new principle, this is the route.

The FDA's review goal is 90 days (FDA Days) after submission, but time paused while the FDA waits for additional information does not count toward that 90. So the actual elapsed calendar time to clearance is usually longer than 90 days. There is also a fee: for fiscal year 2026 the 510(k) review fee is USD 26,067 standard, or USD 6,517 for a qualified small business. Build this review time and fee into the schedule and budget first.

Establishment registration, US Agent, and the quality system

Apart from clearing the device itself, the facility that makes it carries duties too. A foreign manufacturing facility that ships medical devices to the US must register with the FDA and list the devices it handles (21 CFR Part 807). The registration renews every fiscal year between October and December, and the annual registration fee for FY2026 is USD 11,423. Unlike free food or cosmetics facility registration, a medical device facility pays an annual fee with no standard small-business reduction, though the FDA may grant a discretionary hardship waiver. That annual cost belongs in the budget.

The foreign manufacturer must also designate a US Agent (21 CFR 807.40). An agent who resides or has a place of business in the US becomes the FDA's point of contact, and when the FDA cannot reach the foreign manufacturer directly, notice to the agent counts as notice to the manufacturer.

One important rule changed in 2026. The FDA amended its old Quality System Regulation (QSR) into the Quality Management System Regulation (QMSR), harmonized with the international standard ISO 13485, and it took effect on 2 February 2026. The key point is that the FDA's quality rule now incorporates ISO 13485:2016 as its baseline. A Korean manufacturer already certified to ISO 13485 has an easier US entry as a result, so this is the moment to check that the supplier's quality system meets the amended requirement.

The second gate: the X-ray radiation performance standard

If that is the gate shared with other medical devices, an X-ray device has one more. The US separately regulates electronic products that emit radiation under the Radiation Control for Health and Safety Act (RCHSA). X-ray equipment is covered, so regardless of the device clearance it must meet radiation safety performance standards and file separate reports.

The performance standards are in 21 CFR Part 1020: provisions for diagnostic X-ray systems generally (1020.30), radiographic equipment (1020.31) and fluoroscopic equipment (1020.32) set the limits for radiation output and safety performance. The manufacturer does more than meet them; it carries reporting duties. Before marketing, it files a product report (Form FDA 3626); each year after, an annual report (Form FDA 3638); and when equipment is assembled on site, an assembly report (Form FDA 2579) within 15 days of assembly.

This radiation reporting is entirely separate from the 510(k) and the establishment registration above. A cleared 510(k) with a missed radiation product report is still a violation, and radiation reports without a 510(k) still cannot be marketed. Preparing both sets of paperwork together is the core of exporting X-ray equipment.

Electrical safety standards and UDI

The international standards behind the clearance matter too. Basic safety of medical electrical equipment rests on IEC 60601-1, joined by the particular standard for radiographic and fluoroscopic X-ray equipment (IEC 60601-2-54) and the radiation-protection standard for diagnostic X-ray (IEC 60601-1-3). The FDA maintains these consensus standards on a recognized list, so a declaration of conformity to them smooths the 510(k) review.

The device identification system, UDI, applies as well. A Class II device is subject to UDI labeling and registration in the Global Unique Device Identification Database (GUDID); the Class II compliance date has passed, so it is now simply a baseline requirement.

The barrier is certification, not tariff

Paradoxically, after all that regulation the tariff is the easy part. Medical X-ray equipment classifies under HS 9022.14, and the US base tariff is duty-free (0%). Since duty is already zero without invoking the Korea-US FTA, the tariff and FTA issues that loomed large in food or steel exports barely arise here.

A low tariff barrier means the contest is decided elsewhere. With no price barrier, the real gate to the US market is the FDA clearance and radiation regulation above, the non-tariff barrier. The market goes to the manufacturer who clears them first, so preparing the certification is itself the competitiveness. The principle for deciding exactly which code a device falls under is in what an HS code is.

Shipping: high-value, precision medical equipment

Imaging equipment is demanding as cargo too. It is high-value, often hundreds of thousands of dollars a unit, and its precision optical and electronic parts are sensitive to shock and vibration. Handled like ordinary cargo, even minor damage in transit throws off on-site installation and turns into a large loss.

Three things are central. First, crate it in timber, secure it with cushioning, and attach shock and tilt indicators to record its handling history. Second, protect the electronics, weak to static and moisture, with anti-static and moisture-barrier packing. Third, because it is high-value cargo, always carry marine cargo insurance against the risks of transit. Air freight is preferred for precision, high-value units, but a large, heavy device makes ocean the realistic choice, so weigh lead time, cost and handling stability together. The principle of cargo insurance is covered in the marine cargo insurance guide.

Five things to check before importing Korean medical devices

To sum up, before you import Korean X-ray or imaging equipment, check the following.

1. Classification and 510(k): confirm the device's US classification (class and regulation number), name a predicate, and build the 510(k) review time and fee into the schedule.
2. Establishment registration and agent: line up the FDA facility registration and device listing, the annual fee, and the US Agent.
3. Quality system: check that the supplier's quality system meets the QMSR (ISO 13485-based) that took effect in February 2026.
4. Radiation regulation: prepare the X-ray-specific radiation performance standards and the product, annual and assembly reports separately from the 510(k).
5. Shipping and insurance: packing suited to precision, high-value equipment, marine cargo insurance, and the air-versus-ocean choice.

Importing Korean medical devices is less about loading the ship than about clearing the FDA's two gates first. Know at the order stage that an X-ray device is both a medical device and a radiation-emitting product, design the two clearances together, and in a market where duty is zero you hold the real edge: the certification.

This guide is general information as of August 2026. The FDA's device classification and 510(k) requirements, establishment registration fees, Quality Management System Regulation, and radiation performance standards and report forms change with the rules, so confirm with the FDA, a certification specialist and your forwarder before you actually ship.