Private Health Insurance Act 2007

either:

the person is insured under the old policy at the time the person becomes insured under the new policy; or

the person ceased to be insured under the old policy no more than 7 days, or a longer number of days allowed by the new policy’s insurer for this purpose, before becoming insured under the new policy; and

the old policy is a *complying health insurance policy; and

the person’s premium payments under the old policy were up to date at the time the person became insured under the new policy.

See section 99‑1 about transfer certificates.