{"data":{"id":"us/21-cfr-892.1820","jurisdiction":"us","citation":"21 CFR 892.1820","heading":"Pneumoencephalographic chair.","body":"(a) Identification. A pneumoencephalographic chair is a chair intended to support and position a patient during pneumoencephalography (x-ray imaging of the brain).\n(b) Classification. Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 892—RADIOLOGY DEVICES","Subpart B—Diagnostic Devices"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"52a10acb9eaa21454ab74eeaec3b9c4f9f3c635f76a5c4f8915c8ec89e30acf0","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-892.1770","next":"us/21-cfr-892.1830"},"notice":"GroundRules: Original legal text. Not legal advice."}