[OC] Population coverage for core health services across OECD countries (2021 or nearest year), with the year countries adopted nationwide UHC

**Data sources**

* OECD, Health at a Glance 2023 — report landing page: [https://www.oecd.org/en/publications/2023/11/health-at-a-glance-2023_e04f8239.html](https://www.oecd.org/en/publications/2023/11/health-at-a-glance-2023_e04f8239.html)
* Indicator page “Population coverage for healthcare” (definition and Figure 5.1): [https://www.oecd.org/en/publications/2023/11/health-at-a-glance-2023_e04f8239/full-report/population-coverage-for-healthcare_e999bea9.html](https://www.oecd.org/en/publications/2023/11/health-at-a-glance-2023_e04f8239/full-report/population-coverage-for-healthcare_e999bea9.html)
* OECD Country Notes used for the coverage values, for example:
* United States (shows 91% covered): [https://www.oecd.org/content/dam/oecd/en/publications/reports/2025/07/health-at-a-glance-2023_39bcb58d/united-states_1bd99de8/4268c3ef-en.pdf](https://www.oecd.org/content/dam/oecd/en/publications/reports/2025/07/health-at-a-glance-2023_39bcb58d/united-states_1bd99de8/4268c3ef-en.pdf)
* Mexico (shows 72% covered): [https://www.oecd.org/content/dam/oecd/en/publications/reports/2025/07/health-at-a-glance-2023_39bcb58d/mexico_ca28b701/fe098241-en.pdf](https://www.oecd.org/content/dam/oecd/en/publications/reports/2025/07/health-at-a-glance-2023_39bcb58d/mexico_ca28b701/fe098241-en.pdf)