Where can I find the medical order for the Marine Corps?

From https://www.thebalancecareers.com/military-medical-standards-for-enlistment-3354031

Where to Find Out About Disqualifying Conditions
The information in this article comes from Army Regulation DOD 6130.03, DODD6130.3 and DODI6130.4, which provide complete information on all the medical fitness standards for induction, enlistment, appointment, retention, and related policies and procedures in the U.S. Armed Forces.

All disqualifying medical issues are determined by the Military Entrance Processing Station (MEPS), which directs the use of Army Regulation 40-501, Chapter 2 for medical qualifications for all branches of the Armed Forces (including the Coast Guard).

There are differences between induction standards and retention standards.

Being USMC you should be looking for SECNAVINST 1850.4E, Enclosure 8.


“Any condition that appears to significantly interfere with performance of duties appropriate to a servicemember’s office, grade, rank or rating will be considered.” (DoD 1332.38, Encl. 4.1.3) Most conditions listed in the regulations are not automatically disqualifying. Rather, discharge or retirement usually depends on the conditions’ severity, amenability to treatment and, in particular, interference with performance of duties. These factors are often stated in the medical standards. For example, tendon transplantation warrants referral for discharge/retirement proceedings “[i]f restoration of function is not sufficient to adequately perform the preponderance of duties required.” (DoD 1332.38, Encl. 4.2.) These conditions render members medically “unfit” for service.

The question, as asked, is too broad to answer as a wide range of illnesses and injuries can be the reason that a soldier is given a medical discharge from the US Army. Anything from amputations to mental health issues to tracheotomies are all conditions which can result in a medical discharge.