On a periodic table it is O but it can also be 02    p.s. whoever is supervising this post isnt doing a good job because  before i changed this answer it was very rudeâ¦, nasty and unhelpful.
By law, most healthcare providers must keep records for no less than 10 years after a patient's last visit. If the patient is a minor, doctors must keep records for at least 10 years after the final office visit or until the child is 19 years old, whichever is longer. Tenn. Code Ann. Â§ 68-11-305.
Question: How long do we need to keep medical charts? Answer: Federal and state statutes and regulations as well as risk-management and ethical concerns determine the amount of time to retain patient records.