This friend will have to do a couple things, si o si:
- Find a pre-paga with the coverage/hospitals/clinics they like
- Declare their leukemia on their intake forms, along with providing documentary evidence of their clinical history and treatment
- The pre-paga will at first lie and say they aren't taking on new members, they don't cover foreigners, they don't cover cancer treatment, etc. or straight up ghost the family friend/fail to respond to emails or WhatsApp messages
- When they do, let the family friend explain they know their rights, and they will be using this as proof for a
denouncement of the pre-pago to the Superintendent of Health Services for failure for adhesion to the requested plan for having a pre-existing condition
- The pre-paga needs to also be notified in writing, ideally via registered mail, and given 10 business days to respond following the denuncia if I remember correctly
- They will again try to discourage adhesion via a false differential value and/or claim it must be paid at once
- Differential values MUST be approved by the Superintendent of Health Services; companies can't make them up on a whim
- I believe the extra quota can be paid over the period (3 years iirc) at which point the member must have their disease considered as part of their medical history, and are exempt from a differential value going forward
It's important to know ahead of time that ALL pre-pagas will try to ratfuck your family friend, and don't be afraid of the denouncement, along with considering an
Amparo claim if the Superintendency of Health Services is taking too long to respond.
That being said, they will have to declare their leukemia as you can't lie about something so obvious, and the quota approved can be in the hundreds of thousands or even millions of pesos, but I believe (don't quote me) that you can appeal it too even if the Superintendency of Health Services approved one is unreasonable.
In the meantime it may make sense to begin/continue treatment at a public hospital, in which case they may need to make an Amparo claim as public hospitals have been very understaffed lately, and slow at providing turnos for cancer treatments (I speak from personal experience with my family in Provincia, and I'm told capital is similar).
Good luck, and I wish your family friend a successful treatment.
P.S. I believe
@nikad is an RN here and she may be more familiar with the above mentioned processes, and is generally kind in helping those with seeking guidance.