New Zealand · Insurance guide
Pre-existing conditions and health insurance
Health information from before cover begins can affect the terms an insurer offers. The important details are how the policy defines an existing condition and what the insurer has agreed to cover.
Where to start
Definitions, acceptance terms and exclusions can vary. Switching cover can change the picture, so compare actual wording rather than assuming a condition is always covered or always excluded.
Key points
Answer health questions accurately
Application questions and follow-up requests should be answered carefully because the insurer uses them to decide terms.
Wait for underwriting
A final answer often comes after underwriting, not from the application form alone.
Check exclusions
If cover is offered with exclusions or special terms, those details matter more than a general statement about existing conditions.
Keep the policy wording
The decision letter, schedule and wording should stay together so future cover or claim questions can be checked against the agreed terms.
The insurer asks, then decides
Insurance applications can ask about medical history and other matters. The answers may affect the terms offered, exclusions applied or whether cover is offered at all.
The definition matters
A pre-existing condition is not always described in exactly the same way across every policy. The relevant definition, the application questions and the insurer’s decision letter should be read together.
Switching can reopen the question
Moving to a new policy can mean new underwriting, new exclusions or different treatment of health history. Existing terms should be compared with proposed terms before old cover is cancelled.
General comments online are not enough
Policy terms and underwriting decisions can differ. The decision letter and policy wording matter more than broad statements about whether existing conditions are covered or excluded.
What to check next
- Check who will receive health details, why they are needed and how they will be handled before sharing them.
- A condition or policy cannot be assessed from general information alone.
- Disclose accurately and check the insurer decision.
A useful next step
Read what to check before switching
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Sources and dates
Information was checked on 28 September 2026. Open the current official page before relying on a rate, threshold, eligibility setting or process that may have changed.
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InsuranceSwitching health insurance: the details to compare
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