from the DOD
The excerpt below is is derived from Department of Defense (DOD) Directive 6130.3, Physical Standards for Appointment, Enlistment, and Induction, and DOD Instruction 6130.4, Criteria and Procedure Requirements for Physical Standards for Appointment, Enlistment, or Induction in the Armed Forces:
The disqualifying medical conditions are listed below. The International Classification of Disease (ICD) codes are listed in parentheses following each standard.
The causes for rejection for appointment, enlistment, and induction (without an approved waiver) are an authenticated history of:
a. Abnormalities of the arteries and blood vessels (447), including aneurysms (442), even if repaired, atherosclerosis (440), or arteritis (446).
b. Hypertensive vascular disease (401), evidenced by the average of three consecutive diastolic blood pressure measurements greater than 90 mmHg or three consecutive systolic pressure measurements greater than 140 mmHg. High blood pressure requiring medication or a history of treatment including dietary restriction.
c. Pulmonary (415) or systemic embolization (444).
d. Peripheral vascular disease, including Raynaud's phenomenon (443). e. Vein diseases, recurrent thrombophlebitis (451), thrombophlebitis during the preceding year, or any evidence of venous incompetence, such as large or symptomatic varicose veins, edema, or skin ulceration (454).