Section 890.5730 - Moist heat pack(a)Identification. A moist heat pack is a device intended for medical purposes that consists of silica gel in a fabric container used to retain an elevated temperature and that provides moist heat therapy for body surfaces.(b)Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter, subject to the limitations in § 890.9 . The device is also exempt from the current good manufacturing practice requirements of the quality system regulation in part 820 of this chapter, with the exception of § 820.180 , regarding general requirements concerning records and § 820.198 , regarding complaint files.48 FR 53047, Nov. 23, 1983, as amended at 66 FR 38818 , July 25, 2001