{"data":{"id":"us/21-cfr-810.4","jurisdiction":"us","citation":"21 CFR 810.4","heading":"Service of orders.","body":"Orders issued under this part will be served in person by a designated employee of FDA, or by certified or registered mail or similar mail delivery service with a return receipt record reflecting receipt, to the named person or designated agent at the named person's or designated agent's last known address in FDA's records.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 810—MEDICAL DEVICE RECALL AUTHORITY","Subpart A—General Provisions"],"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":"9edf3f747573a7cb36d1f74b740218b17fc2a4032ad51547576ca0d267377ce3","source_id":"us-cfr","stale":false,"prev":"us/21-cfr-810.3","next":"us/21-cfr-810.10"},"notice":"GroundRules: Original legal text. Not legal advice."}