FDA oversight applies to many articles in this residual SITC category, which captures prosthetic and assistive devices not elsewhere specified — including implantable aids, wearable compensatory appliances, and carried devices designed to offset physical defects or disabilities. Classification here is a fallback position: importers should confirm that a more specific HTS heading does not apply before using this residual code, as misclassification can affect both duty liability and regulatory pathway. The breadth of the 'NES' designation means individual shipments may face very different admissibility requirements depending on whether the article qualifies as a medical device under FDA jurisdiction.

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