If you already have private health insurance in Spain and you have pre-existing medical conditions, changing company needs careful planning. You may still be able to move to Sanitas, but your medical history must be reviewed before you cancel your current policy. Pre-existing conditions, ongoing treatment, recent tests, medication, surgery history or previous exclusions can all affect whether a new policy is accepted and what cover is offered.
The honest answer
Yes, it may be possible to change health insurance company in Spain — or, in US terms, switch provider — with pre-existing conditions, but it is not automatic. A new insurer may review your medical history before accepting the policy. Depending on the condition, the insurer may accept the application, ask for more information, add exclusions, apply limitations, postpone the decision or decline the application.
See also our general guide to pre-existing conditions and health insurance in Spain.
Definition
A pre-existing condition is usually any illness, injury, diagnosis, symptom, treatment, medication or medical issue that existed before the new policy starts. Examples may include:
Why different
If you have no medical history, changing health insurance company may be mainly about timing, renewal dates and choosing the right plan. If you have pre-existing conditions, the decision is more complex because the new insurer may need to assess the medical risk before offering cover. This can affect:
Cancel first?
No. If you have pre-existing conditions, you should normally keep your current policy active until your new Sanitas policy has been reviewed, accepted and the start date confirmed. This is especially important if:
What Sanitas asks
Depending on the condition, Sanitas may ask for additional information before confirming the policy. This may include:
Outcomes
It helps to know the realistic range of outcomes before you apply, so there are no surprises:
| Outcome | What It Means |
|---|---|
| Accepted normally | Policy is issued without a specific exclusion |
| Accepted with exclusion | Related treatment may not be covered |
| More information requested | Reports or test results may be needed |
| Waiting periods applied | Some benefits may not be immediately available |
| Decision postponed | More time or stability may be needed |
| Application declined | Cover is not offered |
Exclusions
An exclusion means the policy may still provide cover for other unrelated healthcare, but it may not cover treatment, tests, complications or follow-up linked to the excluded condition.
Example: if a back condition is excluded, the policy may not cover consultations, scans, treatment, surgery or complications related to that back condition — while still covering other, unrelated healthcare.
Already have exclusions?
Possibly, but the existing exclusions may be relevant. If your current policy already excludes a condition, a new insurer may also exclude it or may ask for further medical information. Switching does not automatically remove existing exclusions.
Currently in treatment
If you are currently receiving treatment, waiting for tests, under specialist review or recently diagnosed, switching health insurance company should be reviewed very carefully. The insurer may want to know:
Pregnancy
Pregnancy needs special handling. Maternity, childbirth and pregnancy-related cover often have specific rules, waiting periods and limitations. If you are already pregnant and want to switch health insurance company, you should check the policy terms before applying and before cancelling existing cover.
Visa / residency
If your private health insurance is being used for a Spanish visa or residency renewal, pre-existing conditions and exclusions need extra care. This may apply to the Non-Lucrative Visa, Digital Nomad Visa, Student Visa, EU residency, family residence applications and general residence renewals. A policy may be issued but still include exclusions — if the exclusion is significant, you should check whether the certificate and policy are suitable for your route. See change visa health insurance in Spain and visa-compliant health insurance in Spain.
NLV
If you are renewing the Non-Lucrative Visa and want to change insurance company, make sure the replacement policy remains suitable for the NLV. Avoid any gap in cover and do not cancel your current insurance until the new Sanitas policy has been accepted. If your current policy ends on 30 June, your new policy should start no later than 1 July. See change NLV health insurance company.
DNV
Digital Nomad Visa holders should first check whether private insurance is their main healthcare proof or whether they are covered through Spanish social security / public healthcare. If private insurance is the main proof, avoid gaps and check exclusions carefully. If private insurance is supplementary, there may be more flexibility, but medical underwriting can still apply. See change Digital Nomad Visa health insurance.
By condition
Every case is individual, but here is the kind of information Sanitas typically wants to see for the conditions we are asked about most. This is general guidance, not a coverage promise.
Sanitas may want to know the type of diabetes, treatment, medication, control and any complications, plus recent test results.
The insurer may review whether the condition is controlled, whether there is medication, and whether there are heart, kidney or vascular complications.
A cardiology report, diagnosis, test results, treatment history or surgery details may be requested.
Cancer history usually needs careful review — cancer type, stage, treatment dates, remission period, latest scans and oncology reports.
Conditions such as Crohn's disease, ulcerative colitis or chronic digestive illness may require specialist reports, medication details and flare history.
MRI reports, symptoms, treatment history, surgery history or pain management details may be relevant.
The insurer may look at diagnosis, medication, stability, treatment history, hospital admissions and current support.
Recent surgery can affect acceptance, exclusions or timing. Discharge reports and recovery information may be requested.
Info by condition
A quick reference for the documents Sanitas commonly asks for, by condition type:
| Condition Type | Information Often Needed |
|---|---|
| Diabetes | Type, treatment, medication, control, complications |
| Heart conditions | Cardiology report, tests, surgery, medication |
| Cancer history | Oncology report, stage, treatment dates, latest review |
| Digestive conditions | Diagnosis, medication, flare history, specialist report |
| Spine / back issues | MRI report, symptoms, treatment, surgery history |
| Mental health | Diagnosis, medication, stability, treatment history |
| Pregnancy | Due date, stage of pregnancy, maternity cover check |
| Recent surgery | Discharge report, recovery status, follow-up plan |
No gap
A gap in cover means your old policy has ended but your new policy has not started.
Step by step
Eight steps to switch without losing cover — keeping your current policy as your safety net until the new one is secure:
Do not cancel yet — your existing cover is your safety net.
Include diagnoses, medication, surgery, tests and ongoing treatment.
Ask us to check which Sanitas options may be appropriate for your situation.
Do not hide or minimise conditions — accuracy protects your cover.
Sanitas may accept, request more information, exclude or decline.
Do not cancel until this is confirmed.
Especially if the policy is for a visa or residency renewal.
Only after the new policy is accepted and the start date is secure.
Mistakes
These are the mistakes that most often cause problems — every one is avoidable:
The ones that cause the most trouble:
| Mistake | Why It Matters |
|---|---|
| Cancelling current policy first | You may lose existing cover |
| Hiding medical history | Claims or acceptance may be affected |
| Waiting until renewal week | Not enough time for underwriting |
| Assuming exclusions disappear | Existing conditions may still be reviewed |
| Letting the policy expire | Creates a gap in cover |
| Choosing unsuitable visa cover | Renewal evidence may be affected |
| Not preparing reports | Delays underwriting |
Get help
Spanish Health Insurance helps English-speaking residents, expats and visa applicants check whether switching to Sanitas may be possible when there is medical history. We can help you understand what information may be needed, which Sanitas options may fit your situation, how to avoid a gap in cover, and why you should not cancel your current policy before acceptance is confirmed. We never promise acceptance.
With pre-existing conditions, the smart first step is a check — not a cancellation. Send us your situation and we'll tell you what Sanitas is likely to ask for and what may realistically be possible, before you touch your current policy. Acceptance and exact terms depend on the insurer's underwriting.
Ask first. Free, honest, no-obligation advice from English-speaking advisers before you cancel anything.
FAQs
Honest answers about changing or switching health insurance in Spain when you have medical history.