Sacroiliac Belt: What It Is and How FDA Classifies It

General product and regulatory information only. This page is not medical advice and does not tell anyone whether to use a belt, which one, or how to wear it; those questions belong to a clinician.

Short answer

A sacroiliac belt is a pelvic support band worn around the hips. FDA does not regulate it under that exact name. Its regulations list “sacroiliac” orthoses among truncal orthoses (21 CFR 890.3490) and list a “pelvic support band and belt” as an orthotic accessory (21 CFR 890.3025). Both are Class I devices exempt from premarket notification (510(k)), so a seller’s “FDA approved” wording does not mean FDA reviewed and cleared the product.

Definition and scope

“Sacroiliac belt” is a common product name, not a defined regulatory term. Neither section of the Code of Federal Regulations uses the phrase. What the regulations do contain is two entries that a belt of this kind can fall under, and which one applies depends on how the manufacturer describes the device’s intended purpose.

• Truncal orthosis (21 CFR 890.3490). The regulation identifies a truncal orthosis as “a device intended for medical purposes to support or to immobilize fractures, strains, or sprains of the neck or trunk of the body,” and lists sacroiliac orthoses among its examples.
• Prosthetic and orthotic accessory (21 CFR 890.3025). The regulation identifies this as a device intended for medical purposes “to support, protect, or aid in the use of a cast, orthosis (brace), or prosthesis,” and lists “a pelvic support band and belt” among its examples.

Editorial reading, not an FDA statement: the first entry describes a device that is itself the orthosis, while the second describes a band or belt that supports or protects another item such as a cast or brace. A product filed under one code is therefore not automatically interchangeable with a product filed under the other.

How FDA classifies it in practice

FDA’s Product Classification database assigns each device type a three-letter product code. Two codes are relevant here (database entries checked 2026-10-30):

• IPY, “Orthosis, lumbo-sacral,” regulation 21 CFR 890.3490 (truncal orthosis), Class 1, 510(k) exempt, Physical Medicine review panel. Source: FDA Product Classification, IPY.
• ISR, “band or belt, pelvic support,” regulation 21 CFR 890.3025, Class 1, 510(k) exempt, Physical Medicine review panel. Source: FDA Product Classification, ISR.

Both entries show the device as not implanted and not life-sustaining or life-supporting. The text of each regulation (checked on 2026-10-30 at eCFR 890.3490 and eCFR 890.3025) adds that the exemption from premarket notification is “subject to the limitations in § 890.9,” and that the device is exempt from the quality management system requirements of 21 CFR part 820 except for requirements concerning records and complaint files under § 820.35. FDA’s classification entries add that exempt manufacturers must still register their establishments.

Related truncal orthosis types named in the regulation

The list below is taken directly from 21 CFR 890.3490(a). It shows where a sacroiliac orthosis sits among its regulatory neighbours; every row is the regulation’s own wording.

Orthosis named in 890.3490(a)	Same regulation and class
Abdominal orthosis	21 CFR 890.3490, Class I
Cervical orthosis	21 CFR 890.3490, Class I
Cervical-thoracic orthosis	21 CFR 890.3490, Class I
Lumbar orthosis	21 CFR 890.3490, Class I
Lumbo-sacral orthosis	21 CFR 890.3490, Class I
Rib fracture orthosis	21 CFR 890.3490, Class I
Sacroiliac orthosis	21 CFR 890.3490, Class I
Thoracic orthosis	21 CFR 890.3490, Class I
Clavicle splint	21 CFR 890.3490, Class I

For the neck-level member of this family, see our guide to the cervical collar, which sits under the same regulation.

Where it matters for clinics and supply decisions

Three points follow directly from the regulatory text above.

1. Class I exempt is not a clearance. Because both entries are exempt from premarket notification, FDA does not issue a 510(k) clearance for these products. A listing that says “FDA cleared” or “FDA approved” for a Class I exempt belt is not describing a clearance that exists for that category. FDA’s own classification pages are where the class and exemption status of a product code can be checked.
2. The product code is the useful identifier. A catalogue entry that names IPY or ISR, or a manufacturer that states the regulation it falls under, can be matched against the entries above. A catalogue entry that gives no regulatory identification gives nothing to match.
3. Exempt does not mean unregulated. General controls still apply, including establishment registration, and the quality system exemption carves out records and complaint files, which remain required.

The device regulations also connect to wider device-law vocabulary on this site; see Medical Device Amendments of 1976 for the statute that created the class system and medical device reporting for adverse-event reporting duties.

Common misunderstandings

“It is FDA approved.”

Approval (premarket approval) is a process for Class III devices. These are Class I and exempt from 510(k), so neither approval nor clearance applies to the category. The accurate statements are the class, the regulation number and the product code.

“A sacroiliac belt, a lumbar brace and a gait belt are the same thing.”

They are not. Lumbar and lumbo-sacral orthoses are separate named entries in 890.3490. A gait belt is a different device used to assist a person while walking; see what is a gait belt. This page does not cover that device.

“The regulation says what a belt treats.”

It does not. The regulation text describes an intended purpose, supporting or immobilizing fractures, strains or sprains of the neck or trunk. It makes no statement about the effectiveness of any particular belt for any condition, and neither does this page.

FAQ

What is a sacroiliac belt?

It is a pelvic support band. FDA’s regulations name “sacroiliac” orthoses (21 CFR 890.3490) and a “pelvic support band and belt” (21 CFR 890.3025), both Class I.

Does a sacroiliac belt need FDA clearance?

Under both regulations the device is exempt from premarket notification, subject to the limitations in 21 CFR 890.9, so no 510(k) clearance is issued for the category. Establishment registration still applies.

What FDA product codes cover it?

IPY (lumbo-sacral orthosis, 21 CFR 890.3490) and ISR (pelvic support band or belt, 21 CFR 890.3025). Both are listed as Class 1, 510(k) exempt.

Sources

• eCFR, 21 CFR 890.3490, Truncal orthosis. Checked 2026-10-30. ecfr.gov
• eCFR, 21 CFR 890.3025, Prosthetic and orthotic accessory. Checked 2026-10-30. ecfr.gov
• FDA Product Classification database, code IPY. Checked 2026-10-30. accessdata.fda.gov
• FDA Product Classification database, code ISR. Checked 2026-10-30. accessdata.fda.gov