Costs & policy choices

Pre-existing conditions: how Spanish underwriting really works

Editorial team Last reviewed 8 September 2026 Next review 8 December 2026

The short answer

Spanish insurers assess new customers through a health questionnaire, and the law requires you to answer it accurately. A declared condition doesn't automatically mean rejection — an insurer may offer standard terms, apply an exclusion or adjusted terms, ask for more information, postpone a decision, or decide it cannot offer the product requested. Nothing in Spanish insurance-contract law dictates which of those it must choose, so the decision belongs to each insurer under criteria it sets for itself, and one insurer's answer is not the market's. What never works is hiding something: the law lets an insurer rescind the contract within a month of discovering an inaccurate declaration, and reduce a claim payment in proportion where a claim happens first — with no payment at all where there was fraud or gross fault. This page covers the assessment and the terms it produces; where a history is your central question, the existing conditions review establishes what is realistically available to you before you apply.

What counts as “pre-existing” — and how insurers find out

A pre-existing condition is, broadly, any illness, injury or ongoing health matter that existed before the policy starts — diagnosed conditions, past surgery, chronic medication, investigations you are still waiting on. The working definition, though, is set by the health questionnaire: under Spanish insurance-contract law your duty before the contract concludes is to declare, in accordance with the questionnaire the insurer puts to you, the circumstances known to you that may influence its assessment of the risk. It is that form, rather than any general medical standard, that decides what you must declare, and the questions on it are written by the insurer issuing it.

Where the line falls matters more than the label, because the declaration is a snapshot taken before cover begins. A condition that first appears once the policy is running is a different question with a different answer, and the questionnaire guide sets out the provision that governs it; living with a chronic condition on a Spanish policy covers the practical side once a condition sits inside the contract. What follows here is what happens at application, when you declare honestly and wait for the answer.

The outcomes an underwriter can reach

Underwriting is not a yes/no gate. Nothing in Spanish insurance-contract law tells an insurer what to do with a condition you have declared: the law governs your duty to declare and the consequences of getting a declaration wrong, while the terms themselves are contractual. The decision therefore belongs to the insurer, made under criteria it sets for itself, and a declared history can come back in any of several shapes.

  1. Normal acceptance. The condition is judged minor, resolved or irrelevant, and the policy issues on standard terms.
  2. Acceptance with a specific exclusion. The policy covers everything except treatment related to the declared condition, and the wording of that exclusion decides what you have actually bought.
  3. Acceptance with adjusted terms. Particular conditions attached to the policy, or a price adjustment, rather than an outright exclusion.
  4. Postponement. Recent events — surgery, an unresolved investigation — can produce “apply again after X months” rather than a decision now.
  5. Decline. A history can be declined. Because the criteria applied are that insurer’s own, a decline tells you about one company’s appetite rather than delivering a verdict from the market.

That last distinction is the one to carry through the rest of the page. Finding out where you stand before making formal applications, rather than collecting declines, is most of the work.

The safe application sequence

  1. Keep conditions out of ordinary web forms, ours included. Our quote form asks only whether history may be relevant; the detail belongs in a private, consented conversation.
  2. Get a read on your position before applying formally. An application is a formal act with a formal answer. Understanding how a history is likely to be treated, before one exists, is what stops a difficult case turning into a run of declines.
  3. Then answer the real questionnaire completely. Resist any suggestion, from anyone, to “keep it simple” by leaving something out. The graduated regime the law applies to an inaccurate declaration is set out in the questionnaire guide, and the only limb of it that ends in nothing being paid is the deliberate one.
  4. Read the offer, not the headline. An acceptance carrying an exclusion is still an acceptance, but what it is worth depends entirely on how that exclusion is drawn — which is the next section, and the part of the process most worth slowing down for.
  5. If you already have cover, change nothing until the new terms exist. Switching re-opens underwriting, and your current policy may be covering something a new insurer would exclude. The switching guide sequences it safely.

Controlled hypertension, medicated, no complications

A declaration of this kind can produce anything from standard acceptance to a cardiovascular exclusion, and which one you get is a decision each insurer makes on its own criteria. It is the sort of history where establishing appetite before applying is worth the delay.

Cancer treated eight years ago, discharged

History like this must still be declared if the questionnaire asks. Time elapsed and discharge status are the kind of facts an underwriter is assessing, so the useful preparation is documentary: a discharge letter or a consultant’s summary states the position in terms an underwriter can act on, where an adjective cannot.

The wording is the product, and the law is specific about it

If your declaration produces an exclusion or a special condition, that wording is the thing you are buying, and Spanish law sets requirements for how it must appear rather than leaving it to the drafter.

General and particular conditions must be drafted clearly and precisely, and clauses limiting the rights of the insured must be highlighted specially and specifically accepted in writing. An exclusion attached to your own declared history is exactly that kind of clause. Separately, the policy has to describe the cover it grants clearly and comprehensibly and, against each guarantee, the exclusions and limitations affecting it, typographically highlighted. An exclusion you had to hunt for, or one you were never asked to accept in writing, is not meeting the standard the law sets, and saying so is a reasonable thing to do before you sign.

Then read it for scope rather than for tone. “Conditions of the right knee” and “musculoskeletal conditions” are two different policies, and the difference between them will not announce itself. Ask, in writing, whether the exclusion is permanent or reviewable after a defined period without symptoms or treatment, and what evidence a review would take. The general exclusions that apply to every holder of the product are a separate layer, dealt with in what a Spanish health policy excludes; the one on this page is yours alone.

When the policy arrives, read it against the offer you accepted

Underwriting produces an offer; the policy is a second document, issued afterwards, and the two are not always identical. The law anticipates this and gives you a narrow, time-limited right to fix it: where the content of the policy differs from the insurance proposal or the clauses agreed, you may require the insurer to correct the divergence within one month of the policy being delivered to you. Let that month pass without claiming and what the policy says is what governs. The provision is important enough that the law requires the paragraph setting it out to be printed in every policy, so you can find it in your own.

The check is therefore worth doing in the week the documents arrive, and it is a short one. Does the exclusion in the policy use the same words as the exclusion you were offered? Is every person you applied for on the terms you were told they would have? Did an exclusion you were never told about arrive with the rest? If anything has moved, raise it in writing and keep the date. Which of your documents governs what covers the wider set of papers a new policy generates.

If you are declined, or offered terms you did not expect

A decline is one insurer’s answer applying its own criteria. It is not a statement about your health, and it is not a finding that you are uninsurable. What it should change is the sequence, because further applications made blind are liable to produce more of the same answer.

  • Ask what the decision rested on, and whether a specialist’s report, discharge summary or recent test result would allow it to be reconsidered. Documents do more work here than description does.
  • Ask whether the answer is about timing. Postponement and decline are different words. Where recency is the barrier, the useful question is when to return, not whether.
  • Weigh restricted terms on their merits. A policy that excludes one condition may still be worth holding for everything else it covers, and an exclusion you know about is worth more than cover you cannot rely on. Check what the exclusion leaves in place before treating the offer as a refusal.
  • Do not soften the next declaration. Adjusting an answer to get a better outcome moves you out of the innocent end of the law’s graduated regime and into the limb where a claim is not paid at all. It is the one move that turns a difficult application into an uninsured one.
  • Keep medical detail out of ordinary web forms, ours included, and out of email. It belongs in the insurer’s own questionnaire or in a private, consented conversation.

Where a history is the whole question rather than a detail of it, that is what the existing-conditions review exists for: your history is looked at properly, and you are told what is realistically available to you before you apply anywhere, including when the answer is not the one you were hoping for. It cannot promise acceptance, because acceptance is not ours to give.

Verify before you buy

  • Answer the questionnaire fully and accurately — Spanish law bases your duty on the insurer's questions (Ley 50/1980, art. 10)
  • Get any exclusion or special condition in writing and check its exact wording before accepting
  • Check that the exclusion is typographically highlighted in the policy and that you were asked to accept it in writing (arts. 3 and 8)
  • Ask whether an exclusion is permanent or reviewable after a period without symptoms or treatment
  • When the policy is delivered, read it against the offer you accepted — art. 8 gives you one month to require any divergence be corrected
  • If switching insurer, confirm how the new underwriting treats conditions your current policy already covers — before cancelling anything
  • Keep copies of everything you declared and every document the insurer issued

Request an existing-conditions review

This is a service rather than a plan. Your history is looked at properly, and you are told what is realistically available before you apply anywhere, including when the answer is not what you hoped.

Request an existing-conditions review

What this guide does and does not cover

This guide explains how an underwriting decision is reached and what Spanish law requires of the terms it produces. It does not publish how any named insurer treats any named condition: those criteria are internal to each insurer, applied case by case, and revised without notice.

Sources & evidence

  1. What is a health insurance health questionnaire? · SegurCaixa Adeslas accessed 2026-08-14 · applies to: Adeslas underwriting practice, illustrative of Spanish market norms · in English · supports: the health questionnaire is completed, signed and submitted by each insured person so the insurer can assess the risk before cover begins; intentionally omitting or falsifying information may lead to services being excluded or the contract terminated; a questionnaire-free product exists but is outpatient-only and covers neither hospitalisation nor surgery Verified in a browser on 16 August 2026 — the page returns 403 to automated checking. It does not state outright decline as an underwriting outcome; that part of the page's description rests on general market practice and is not evidenced here.
  2. Ley 50/1980, de 8 de octubre, de Contrato de Seguro (consolidated text) · Boletín Oficial del Estado dated 8 October 1980, consolidated to 25 July 2025 · accessed 2026-08-16 · applies to: all Spanish insurance contracts · in Spanish · supports: art. 10 — the duty is to answer the questionnaire the insurer puts; the insurer may rescind the contract within one month of learning of a reserva o inexactitud; where a claim occurs before that, the benefit is reduced in proportion between the agreed premium and the premium that would have applied had the risk been known; the benefit is lost entirely only where there was dolo o culpa grave Supports the wording directly. It does not support any statement that cover is automatically void on non-disclosure.
  3. Ley 50/1980, de 8 de octubre, de Contrato de Seguro, arts. 3 and 8 (consolidated text) · Boletín Oficial del Estado dated 8 October 1980, consolidated text, last updated 25 July 2025 · accessed 2026-09-08 · applies to: insurance contracts governed by Spanish law · in Spanish · supports: art. 3 — general and particular conditions must be drafted clearly and precisely, general conditions may in no case be prejudicial to the insured, and clauses limiting the rights of the insured must be highlighted specially and specifically accepted in writing; art. 8.3 — the policy must describe the guarantees and cover granted clearly and comprehensibly and, for each of them, the exclusions and limitations affecting it, typographically highlighted; art. 8, final paragraph — where the content of the policy differs from the insurance proposal or the clauses agreed, the policyholder may require the insurer to correct the divergence within one month of delivery of the policy, after which the policy governs, and that paragraph must itself be inserted in every policy Read in full at source on 8 September 2026 via the BOE consolidated text. Art. 8 is cited in its current wording, in force from 1 January 2016. Nothing in either article prescribes an underwriting outcome for any condition.

How we source and review claims: sources & review policy. Reviewed 8 September 2026 · next review 8 December 2026.