You can get Age Pension for the whole time you are overseas, regardless of whether you leave Australia temporarily or permanently.
However, the amount of pension you receive may change if you remain outside Australia for more than 26 weeks.
Whether or not your payment amount changes will depend on how long you have lived in Australia between age 16 and age pension age. http://www.humanservices.gov.au/ ... onPensionSupplement
Health care and medicine
If you travel overseas you can get help with the cost of essential medical treatment in some countries under a Reciprocal Health Care Agreement.
This doesn’t replace the need for private travel health insurance.