You have sold the house in Kent, bought the stone farmhouse near Bergerac, and registered with the local mairie. Then the letter arrives from the caisse primaire d’assurance maladie, the local health fund universally known as the CPAM: your application for French health cover is refused, or put on hold pending documents you do not understand. For a British retiree living in France after Brexit, this is the moment when an administrative formality turns into a legal question. Who pays for your hip operation, your prescriptions, your months of physiotherapy? The answer depends on two distinct doors into the French system, and choosing the wrong one, or filing the file badly, costs months. This article explains both doors in full: residence-based cover under the protection universelle maladie, universally known as PUMA, and United Kingdom-funded cover through the S1 form. It then sets out what the cover actually pays, what stays on your bill, and the exact remedy chain when the CPAM says no, from the friendly appeal to the social court. Every decisive rule below is quoted from a statute or a judgment read for this article, with its official link beside it.

I. Getting into the French health system: the two doors open to a British resident

French law starts from a promise that surprises many British newcomers, because the National Health Service works differently. In France, health cover follows either work or residence, and residence alone is enough. The founding text provides that social security rests on national solidarity and covers, and I quote the statute, every person working or living in France in a stable and regular way. The official wording is: « La sécurité sociale est fondée sur le principe de solidarité nationale. Elle assure, pour toute personne travaillant ou résidant en France de façon stable et régulière, la couverture des charges de maladie, de maternité et de paternité ainsi que des charges de famille et d’autonomie. » That sentence, from article L. 111-1 of the Social Security Code, is the anchor of everything that follows. A British passport and a post-Brexit residence permit change nothing about this principle, provided your residence in France is stable and regular. The two words matter enormously, so the statute sends you to detailed rules for each of them, and the case law polices the boundary. Before Brexit, European coordination rules did much of the work silently. Since the withdrawal, British residents enter through ordinary French residence law, unless they hold an S1 form that keeps the United Kingdom as the paying state. Understanding which door is yours is the first legal act of your retirement in France.

A. The PUMA door: residence-based cover through your local CPAM

PUMA, the protection universelle maladie, is the residence-based gateway. Its core article states, and I quote it word for word: « Toute personne travaillant ou, lorsqu’elle n’exerce pas d’activité professionnelle, résidant en France de manière stable et régulière bénéficie, en cas de maladie ou de maternité, de la prise en charge de ses frais de santé dans les conditions fixées au présent livre. » That is article L. 160-1 of the Social Security Code, in force and applicable. Read it slowly, because each limb carries a practical consequence for a British retiree. First, you do not need a job, an employer, or contributions from self-employment: the text expressly covers the person who does not work, on residence alone. A retired couple living on a United Kingdom state pension and private pensions, with no French professional activity, falls squarely inside this sentence. Second, the residence must be both stable and regular, and those two adjectives are terms of art defined elsewhere. Third, the benefit is the payment of health costs, la prise en charge des frais de santé, which means reimbursement of care under French rates, not free treatment at the point of use as in the National Health Service.

The machinery article is article L. 160-5 of the Social Security Code, which tells you exactly where to go: the CPAM of your place of residence. Its wording, quoted exactly, runs: « Toute personne qui déclare auprès d’une caisse primaire d’assurance maladie, dans des conditions fixées par décret, ne pas bénéficier de la prise en charge des frais de santé mentionnée à l’ article L. 160-1 bénéficie de cette prise en charge auprès de cette caisse dès qu’elle justifie de son identité et de sa résidence stable et régulière. » In practice, you declare on your honour that no other scheme covers you, you prove who you are, and you prove stable and regular residence. The same article adds that social services, approved non-profit associations and health establishments must help applicants with the affiliation request and may forward the papers to the fund with your consent, which is worth remembering if language or paperwork blocks you: the centre communal d’action sociale of your town, the municipal welfare office, can lawfully assist. People with no stable address must elect an address under the social action code, a situation that rarely concerns British homeowners but shows how far the universal logic goes.

Stability first. The statute refers the detail to regulation: article L. 111-2-3 of the Social Security Code provides, and I quote it in full: « Un décret en Conseil d’Etat précise, sans préjudice des règles particulières applicables au service des prestations ou des allocations, les conditions d’appréciation de la stabilité de la résidence et de la régularité du séjour mentionnées à l’ article L. 111-1 . » The implementing decree sets the famous three-month rule. Article D. 160-2 of the Social Security Code requires, and I quote the operative sentence word for word: « Les personnes qui demandent à bénéficier de la prise en charge des frais de santé en application des dispositions de l’article L. 160-5 doivent produire un justificatif démontrant qu’elles résident en France de manière ininterrompue depuis plus de trois mois », while listing documents that can prove it, from family benefits to housing allowances, and exempted categories such as recognised refugees who satisfy the condition immediately. For a British retiree, the message is blunt: apply the day you arrive and the CPAM will lawfully refuse, because on day one you cannot show three continuous months. Wait until the three months are documented, with electricity bills, bank statements showing local spending, the taxe d’habitation bill or the lease, and the same application succeeds. The regulation also defines the foyer, the home base, through article R. 111-2 of the Social Security Code, whose exact words are worth keeping: « sont considérées comme résidant en France de manière stable les personnes qui ont leur foyer ou le lieu de leur séjour principal sur le territoire métropolitain, en Guadeloupe, en Guyane, à la Martinique, à La Réunion, à Saint-Barthélemy ou à Saint Martin. » The home is where you normally live, and the regulation deems the principal stay to be in France for people who personally spend more than six months a year there without moving residence abroad. A British couple spending eight months in the Dordogne house and four months with the grandchildren in Manchester therefore keeps a stable French residence, while a couple spending only summers in France does not, and must organise cover differently, typically through travel insurance and the European Health Insurance Card logic for visitors rather than PUMA.

Regularity second, and this is where Brexit bites. Regular residence means residence under a valid immigration status. Before the withdrawal, a British citizen lived in France under European free movement and regularity was rarely examined. Since 2021, a British newcomer must hold the proper document: a long-stay visa followed by a carte de séjour, a Withdrawal Agreement residence permit, commonly called the WARP card, for those who were already settled before the end of 2020, or a ten-year carte de résident. The CPAM routinely asks for the passport with the visa, the residence permit, and proof of address, and it is entitled to do so, because regularity is a statutory condition of article L. 160-1 itself. Keep copies of every permit, including expired ones with the renewal receipt, the récépissé, since continuity of regularity bridges renewal gaps. If your permit application is refused, health cover and immigration litigation then move together: the residence challenge comes first, because without regular status the PUMA door stays shut. Readers facing that situation will find the method for residence refusals explained in our companion piece on long-stay visas and residence permits, which follows the same remedy logic developed below.

The courts enforce the three-month rule strictly, including against sympathetic claimants, and one judgment states the mechanism so clearly that every British applicant should know it. On 3 June 2021 the Second Civil Chamber of the Court of Cassation, appeal number 20-10.687, published under reference ECLI:FR:CCASS:2021:C200546, rejected the claim of a woman who had applied for affiliation thirteen days after arriving in France. The Court recalled, and I quote its reasoning word for word: « les personnes qui demandent à bénéficier de la prise en charge des frais de santé en application des dispositions de l’article L. 160-5 peuvent produire un justificatif démontrant qu’elle résident en France de manière ininterrompue depuis plus de trois mois ou qu’elles relèvent de l’une des catégories qu’il énumère limitativement. » Finding that the applicant showed neither three months of continuous presence nor membership of an exempted category, the Court concluded, again word for word: « que l’intéressée ne pouvait, à la date de la demande, prétendre à son affiliation au régime général de l’assurance maladie-maternité. » The lesson for a British retiree is not that the system is hostile but that it is calendared: file too early and the refusal is lawful and will survive appeal, as this judgment shows; file once the three months are evidenced and the same fund must affiliate you. Note also that the Court accepted the scheme itself as non-discriminatory and proportionate, holding that rules applying without distinction of nationality to anyone seeking health cover, limited in scope and serving the management of an insurance system extended to the whole resident population, do not breach the right to life, private life or property. A British applicant therefore gains nothing by attacking the three-month rule in principle; the winning strategy is to satisfy it document by document.

Once affiliated, you receive an affiliation notice, then a social security number, then the green plastic carte Vitale that you present at every surgery and pharmacy. Registration with a médecin traitant, a nominated general practitioner who acts as your gatekeeper, organises the reimbursement rates, and the CPAM of your department becomes your everyday interlocutor. Keep the affiliation notice preciously: landlords, banks and even some hospitals ask for it, and in any later dispute it proves the starting date of your rights. If you previously worked in France and then retired, a parallel mechanism protects you during transitions: article L. 161-8 of the Social Security Code provides, and I quote it exactly: « Tant qu’elles continuent de remplir les conditions de résidence et de séjour mentionnées à l’ article L. 111-2-3 et ne viennent pas à justifier de nouveau des conditions d’ouverture du droit aux mêmes prestations dans ce régime ou un autre régime, les personnes qui cessent de remplir les conditions d’activité requises pour l’affiliation à l’assurance maladie, maternité, invalidité, décès d’un régime dont elles relevaient jusqu’alors bénéficient du maintien de leur droit aux prestations en espèces pour ces risques pendant une durée déterminée par décret. » In plain English, someone who stops working keeps cash benefits for a decree-set period while residence continues, so a British employee who retires in France does not fall through a gap between the employment scheme and PUMA. Ask the CPAM to confirm the maintenance in writing whenever your status changes.

B. The S1 door: when the United Kingdom still pays for your care

The second door belongs to British residents whose health costs remain chargeable to the United Kingdom. Its symbol is the S1 form, a certificate by which the British authorities tell the French fund that the holder, although living in France, is insured at British expense. The main beneficiaries are people drawing a United Kingdom state pension, and certain frontier workers, posted workers and their dependants, under the coordination arrangements that continued for protected persons after the withdrawal. The United Kingdom government’s own guidance for British nationals in France, published on gov.uk and updated through 2022, confirms the architecture: if you live and work in France you join the French system, while United Kingdom-funded healthcare through the S1 serves those the United Kingdom remains competent for, and the same guidance reminds residents that French state cover reimburses only part of the cost, adding, in its own words, that you can also get top-up insurance called a mutuelle covering all or part of what the state does not pay. The full page, which every British household in France should bookmark, is the official guide Healthcare for UK nationals living in France on gov.uk, mirrored in French practice by the ameli portal page on Protection universelle maladie (PUMa). Check both before you move, because the United Kingdom side determines whether you are an S1 person at all.

In concrete terms, the S1 route runs as follows for a retiree. You request the S1 from the competent British institution once your United Kingdom state pension is in payment, or once your posted-worker or dependant status is recognised. You then register the form with the CPAM of your French residence, exactly as with PUMA, and the CPAM affiliâtes you as a person insured at the expense of a foreign scheme. From that day, you are treated for care purposes like a French insured person: same surgeries, same hospitals, same reimbursement channels, same carte Vitale in time. The money, behind the scenes, is recovered from the United Kingdom through inter-state settlement, which is why the CPAM examines the S1 with such care and why an expired or incorrectly completed form produces the classic refusal letter. If the CPAM doubts the form, it writes to the British liaison body, and files regularly sleep for months at this stage. Chase in writing, keep proof of posting, and never let the file go silent, because silence is later read as abandonment. Where the delay itself causes harm, for example a postponed operation, say so expressly in a dated letter and keep the medical evidence, since the remedy judge will want to see what the waiting cost you.

Dependants follow the insured person, but each dependant needs individual registration, and adult children in work need their own basis. A spouse who has never worked and draws no pension is registered on the pensioner’s S1, while a spouse who takes a part-time job in France switches to the French employment scheme for her own cover. Students use the student Global Health Insurance Card, workers posted temporarily from Britain use the GHIC, the European Health Insurance Card where still valid, or an S1 according to their National Insurance position, and the gov.uk guidance keeps a dedicated posted-worker section for them. None of these documents is a substitute for residence cover once you settle permanently: the GHIC and its predecessors pay for medically necessary care during a temporary stay, which is a different legal animal from affiliation. The most frequent and expensive mistake in British files is precisely this confusion, living full-time in France for two years on a visitor’s card and discovering after a hospitalisation that the card never covered a resident. If that sentence describes you, stop relying on the travel document and file for PUMA or register your S1 now, because only affiliation creates rights, and rights run from the application date, not from the day you fell ill.

Choosing between the doors is therefore a short decision tree. Do you draw a United Kingdom state pension or hold frontier, posted or protected status that makes the United Kingdom competent? Then the S1 door is yours, and PUMA is the wrong queue. Are you an early retiree living on savings and private pensions, with no United Kingdom state pension in payment and no protected status? Then no foreign state pays for you, and PUMA on residence is your only door, once the three months and the permit are in order. Can you cumulate both? No: article L. 160-5 opens PUMA to whoever declares not already benefiting from health cover, so an S1 holder already covered cannot simultaneously claim PUMA, and a PUMA member who later obtains an S1 moves schemes. File in one queue, keep the acknowledgment, and switch only with a dated paper trail. Households often split: the state pensioner father on S1, the younger wife on PUMA, each child on the correct basis. There is nothing abnormal about a mixed household; abnormal is assuming one affiliation covers everybody.

II. What the cover pays for and how to challenge a refusal

Getting in is half the battle. The other half is money: French health insurance, however obtained, reimburses a share of each medical expense at official rates, and the rest stays with you unless a complementary policy pays it. British retirees raised on free-at-the-point-of-use care regularly misunderstand this, budget too tightly, then face the refused-reimbursement letter on top of the refused-affiliation letter. The two disputes look alike but obey different rules, so this second part separates them carefully: first the content of the cover and the bill left over, then the remedy chain that turns a refusal into a winnable file.

A. What French health insurance pays and what stays on your bill

The basket of reimbursed care is set by article L. 160-8 of the Social Security Code, whose opening words define the whole philosophy: « La protection sociale contre le risque et les conséquences de la maladie prévue à l’article L. 111-2-1 comporte », followed by a long list running from general and specialist medicine, dental care, pharmacy, laboratory tests, hospitalisation and rehabilitation, through transport costs for treatment, to contraception and related examinations. In everyday English: consultations, prescriptions, blood tests, scans, hospital stays, physiotherapy on prescription and medical transport are inside the basket when prescribed and properly declared. What the article does not say matters just as much: it promises coverage of these categories, not full payment of every bill. The patient’s share is organised by article L. 160-13 of the Social Security Code, which provides, and I quote its first sentence: « La participation de l’assuré aux tarifs servant de base au calcul des prestations prévues aux 1°, 2°, 5° bis, 6°, 8°, 11° et 12° de l’article L. 160-8 et aux 2° et 3° de l’article L. 160-9-1 peut être proportionnelle auxdits tarifs ou être fixée à une somme forfaitaire. » The insured person’s contribution may therefore be proportional or flat-rate, varying by category of care, conditions of treatment, accommodation and establishment, with hospital charges proportional to statutory bases. The same article authorises a flat-rate charge for an unplanned visit to an authorised emergency department not followed by admission to a medical, surgical, obstetric or dental ward, its amount set by ministerial order. Behind the jargon sits the familiar French landscape: the ticket modérateur, the share left to the patient, the participation forfaitaire of a few euros on consultations and the franchise on medicines and transport, all capped annually by decree. None of these is means-tested; they apply to the British retiree exactly as to the French neighbour.

This is why the mutuelle, the complementary top-up policy, is close to universal in France and practically indispensable for a retiree household. A mutuelle is a private contract, with a mutual insurer, a provident institution or an insurance company, that reimburses all or part of the patient’s share. The statute channels these contracts toward responsible standards through article L. 871-1 of the Social Security Code, which conditions the tax and social advantages of employer top-up schemes on respect for rules set by decree, including the prohibition on reimbursing the flat-rate contribution and the excess referred to in article L. 160-13 and the reduction mechanism of article L. 322-5. Individual policies taken by retirees are not bound by every line of that article, but the market follows its shape: serious contracts state their reimbursement as a percentage of the official base rate, the base de remboursement, such as 100, 150 or 300 per cent, and the famous percentages mislead British buyers who read 300 per cent as three times the bill, when it means three times the modest official base. Shop with the base rates in front of you, declare your médecin traitant path correctly since going off-path reduces the state share that the mutuelle then has to top up, and check dental, optical and hearing tables with special care, because those three items combine low official bases with high real prices and generate most retiree disputes. Hospital daily charges, the forfait hospitalier, and private-room supplements deserve the same scrutiny before any planned admission.

Means-tested help exists for small pensions through the complémentaire santé solidaire, the solidarity top-up that replaced the old CMU-C and ACS schemes. Article L. 861-1 of the Social Security Code opens the right in these exact words: « Les personnes mentionnées à l’article L. 160-1 ont droit à une protection complémentaire en matière de santé dans les conditions suivantes : 1° Sans acquitter de participation financière lorsque leurs ressources ainsi que celles des autres personnes membres du même foyer sont inférieures à un plafond déterminé par décret », with a second tier under a ceiling raised by 35 per cent against a financial contribution. In practice, a British retiree household already affiliated under PUMA whose resources sit below the annual decree ceilings, published each spring, obtains the solidarity top-up free or cheaply, covering the patient’s share, the daily hospital charge and, within capped baskets, dental, optical and hearing care. Apply through your CPAM with the last tax notice, the avis d’imposition, and the household composition; a refusal states the resources retained and the ceiling applied, which is exactly what a lawyer needs to check the arithmetic. Do not confuse this solidarity scheme, which requires PUMA membership first, with PUMA itself: article L. 861-1 expressly reserves it to persons mentioned in article L. 160-1, so the affiliation fight comes first and the top-up fight second.

Two money traps deserve explicit warning because British files fall into them every month. First, care received before the affiliation date is not retroactively covered: rights run from the complete application, and the hospital bill for the month before stays yours, subject only to emergency social assistance routes that are discretionary and local. Second, private English-speaking clinics that practise dépassements d’honoraires, fees above the official rate, leave the excess to you or your mutuelle within its table; the state’s share never follows the excess. Ask every new practitioner whether they practise in sector 1, at official rates, or sector 2, with authorised excesses, and get the written estimate, the devis, before costly dental or specialist work. These precautions sound mercenary until the first €4,000 implant estimate lands; afterwards they look like wisdom.

B. Challenging a CPAM refusal: the friendly appeal first, then the social court

French social litigation is a two-storey building, and you must climb the stairs in order. Against any CPAM decision, refusal of affiliation, refusal of reimbursement, recovery of an overpayment, the first step is compulsory: the recours préalable, the prior appeal to the fund’s friendly-appeal board, the commission de recours amiable, universally shortened to CRA. Article L. 142-4 of the Social Security Code states the principle in these exact words: « Les recours contentieux formés dans les matières mentionnées aux articles L. 142-1 , à l’exception du 7°, et L. 142-3 sont précédés d’un recours préalable, dans des conditions prévues par décret en Conseil d’Etat. » Go straight to court without the CRA and the court declares the claim inadmissible, however right you are on the substance; the reported cases are full of well-founded claims thrown out for skipping this step. The decree then sets a guillotine deadline. Article R. 142-1 of the Social Security Code provides, and I quote it word for word: « Cette commission doit être saisie dans le délai de deux mois à compter de la notification de la décision contre laquelle les intéressés entendent former une réclamation. » Two months from notification, not from the date on the letter heading, and notification means receipt: keep the envelope, screenshot the registered-letter tracking, and file the CRA by registered post with acknowledgment of receipt or through the fund’s online account with a saved receipt. A late CRA is dead, and no argument on the merits revives it, so calendar the deadline the day the refusal arrives and treat it as the most important date in the file.

The CRA letter itself should be short, dated, and evidential. Identify the decision challenged with its date and reference, state that you appeal to the commission de recours amiable, then attach in numbered order the proof the fund said was missing: passport and permit for regularity, three months of presence evidence for stability, the S1 for the United Kingdom-funded route, the medical prescription for a reimbursement fight. Ask expressly for the acknowledgment of receipt and for communication of the documents the fund relied on, since equality of arms starts there. Write in French or bilingually; a letter in English alone is often processed, but a French version removes the pretext for delay. If the fund neither answers nor convenes you within a reasonable time, that silence becomes part of your court file: note each chase-up with its date, because the judge reads diligence. Readers familiar with French tax litigation will recognise the family resemblance with the claim-then-court pattern used against tax assessments, described in our analysis of tax audit letters and the thirty-day reply; the social version simply runs through the CRA instead of the tax officer.

After the CRA, the dispute moves to the court that now hears social cases: the specially designated chamber of the tribunal judiciaire, the ordinary civil court, sitting as the social disputes judge, which replaced the old tribunal des affaires de sécurité sociale. Article L. 142-1 of the Social Security Code defines its territory, and I quote its opening: « Le contentieux de la sécurité sociale comprend les litiges relatifs : 1° A l’application des législations et réglementations de sécurité sociale et de mutualité sociale agricole », continuing through contribution recovery, disability states and incapacity rates. An affiliation refusal and a reimbursement refusal both fall inside this definition, so the tribunal judiciaire of your residence is competent, with appeal to the cour d’appel and, on points of law, to the Court of Cassation whose 2021 judgment on the three-month rule was quoted above. Representation by counsel is not compulsory at first instance but is strongly advisable once medical evidence, European coordination, or discrimination arguments enter the file, because the fund always fields an experienced representative. Legal aid, the aide juridictionnelle, is available under resources conditions and covers court and expert costs; ask the court’s legal aid bureau early, since the application suspends nothing but prepares everything.

For readers in Paris and the Île-de-France, three local points sharpen the general method. First, the competent fund is the CPAM de Paris for residents of the capital, and the CPAM of your department of residence elsewhere in the region, and Paris files move through a large urban back-office where standard refusal templates cite missing stability or regularity proof without detail; answer template with evidence, not with anger, and demand the precise missing item in your CRA. Second, the competent court is the tribunal judiciaire de Paris for Paris residents, whose social chamber handles a heavy British and expatriate caseload and expects orderly bundles: numbered exhibits, a one-page chronology, translations of the English documents you rely on. Third, practical access to care while the dispute runs matters more in Parisian waiting times than anywhere: keep a nominated médecin traitant inside the reimbursement path, use the centre communal d’action sociale route mentioned under article L. 160-5 if paperwork stalls, and never interrupt prescribed treatment for administrative reasons, because the medical damage later becomes irreparable while the administrative damage stays reparable. These Paris points change nothing in the statutes, which apply identically from Lille to Marseille, but they change the tempo of the file, and tempo wins cases.

Evidence is where British files are won or lost, so organise it as the judge will read it. Stability is proved by presence: leases, utility bills, French bank statements, school certificates for accompanying children, travel records showing the balance of the year in France. Regularity is proved by status: visa, residence permit, WARP card, renewal receipts bridging gaps. The S1 route is proved by the form itself plus the pension award. Medical urgency, where relevant, is proved by dated certificates, not by retrospective assertions. And every deadline is proved by postal or electronic receipts. Present the bundle twice: once to the CRA, where a complete file regularly produces a reversal without a courtroom, and once to the court, where the same bundle, untouched by the fund’s silence, speaks for itself. The 2021 Court of Cassation ruling quoted in the first part is the model of what judges do with such bundles: they count the days of presence, check the exempted categories, and apply the text. Give them days to count and categories to check.

Conclusion

A British retiree in France after Brexit is not a guest of the health system but a rights-holder inside it, through one of two clearly marked doors. Residence-based PUMA cover under articles L. 160-1 and L. 160-5 of the Social Security Code serves everyone whose home and lawful status are in France, once three continuous months are documented and the permit is in order, as the Court of Cassation confirmed on 3 June 2021. The S1 route serves those the United Kingdom remains competent for, with the British form registered at the CPAM opening the same surgeries and hospitals at French expense settled between states. Inside either door, the basket of article L. 160-8 and the patient contributions of article L. 160-13 define the bill, the mutuelle under article L. 871-1 tops it up, and the solidarity top-up of article L. 861-1 protects small pensions. Against a refusal, the chain never varies: friendly appeal to the CRA within two months of notification under article R. 142-1, then the social chamber of the tribunal judiciaire under article L. 142-1, with the prior appeal of article L. 142-4 as the compulsory first stair. File early, evidence everything, calendar every deadline, and the letter that frightened you on arrival becomes the affiliation notice you keep for life.