Thanks, all, for your comments.
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Yes, we have had confirmation that it's different in Scotland for short-term visitor students than in the rest of the UK. Tier 4 has to pay the (incredibly cheap) fee for a year's worth of healthcare - quite a bargain there - and applies across all the countries in the UK (as far as I can tell).
Quite frankly, even if she had to pay the incredibly low fee on entry for the 5 months she'll be there I'd be happy. Her USA school is asking for her to pay about 750 pounds to have insurance for those five months that won't pay in advance, but only would reimburse her for any expenses she incurs after she submits a claim for that expense. To waive having to purchase this insurance (which is in addition to the travel insurance she already has for cover) the school insists on the criteria listed below. We need to find some sort of document that shows that the NHS meets or exceeds them. If you can point us to a document that shows that, it would be REALLY helpful! Thanks.
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To satisfy the UC’s health insurance requirement for enrolled students, the plan held by the student must be:
1) A Medi-Cal [my note - this is the California program for the medically indigent and the coverage provided is the absolute minimum of care - people die on this plan for lack of care], Medicare or Tricare/military insurance policy or a Covered California plan,
OR
2) An employer-sponsored group health plan or individual plan that meets the following criteria:
a) Has unlimited lifetime benefits
b) Has an annual out-of-pocket maximum of up to $6,600 for an individual but no more than $13,200 for a family. Deductibles, copayments and coinsurance paid by the member accrue toward meeting the out-Of-pocket maximum. A higher out-of-pocket maximum is allowed if the subscriber has a Health Savings Account (HSA) or a Health Reimbursement Account (HRA).
c) Covers the following services (ACA Essential Health Benefits):
(i) Preventive health care services, including an annual physical exam, preventative immunizations and laboratory/diagnostic tests to help determine your state of health
(ii)Chronic disease management for such conditions as asthma, diabetes or other chronic medical conditions
(iii)Hospital stays for medical and surgical care
(iv)Hospital stays for mental health and alcohol/drug abuse conditions, covered the same as any other medical condition
(v) Doctor office visits for medical, mental health, and alcohol/drug abuse conditions
(vi) Emergency room services
(vii) Diagnostic services including laboratory tests
(viii) Medications prescribed by a doctor (including contraceptives)
(ix) Pre-natal and maternity care, with no pre-existing condition limitation