Having private health insurance has many benefits – it can cover you for doctor and hospital visits, and it can provide cover for extras such as physio and dental – however, for the most part, private health insurance will not cover you when travelling overseas.
Although it will depend on your provider, you will usually find that most Australian health insurance providers will only cover you for treatment within Australia – and when you travel overseas, you will no longer be covered.
Source: https://www.entrepreneurshipsecret.com/private-health-insurance/