Medical absences. Not intended for routine illness, even if under a provider’s care, but rather for very serious medical events, such as hospitalizations. These are absences ordered and documented, with hand signature, by a licensed health care doctor, with specific dates school must be missed for medical necessity.
(This also includes significant life trauma, such as an immediate family member death, as confirmed and approved by appropriate school staff.)
Blanket or “under the care of” excuses are not accepted “medically absent” without an IEP or 504 plan specifically addressing the medical issue and approval of appropriate school staff. Routine illnesses are, just like for adults at work, counted absences.