How to Make a Health Insurance Claim in New Zealand
Many people assume that making a health insurance claim simply means sending an invoice to the insurer after treatment. In practice, a successful claim often begins much earlier—when you first obtain a referral, attend a specialist consultation or consider a treatment plan.
Checking your cover before incurring significant costs can help you avoid discovering too late that prior approval was required, a benefit limit applies, or part of the cost must be paid by you.
1. Check Your Policy and Underwriting Terms
Start by reviewing your policy wording, acceptance certificate and latest renewal documents.
Check:
Whether the consultation, test or treatment is covered;
Whether the relevant waiting period has ended;
Whether any pre-existing condition exclusion or special term applies;
The applicable annual or per-claim benefit limit;
Any excess or co-payment;
Whether you need to use a recognised or network provider;
Whether reasonable-cost or market-price limits apply.
Policies with similar names can still provide different benefits. Cover may also vary according to the version purchased, the policy start date and any optional benefits selected.
2. Obtain a Referral
Specialist consultations, diagnostic investigations, surgery and some non-surgical treatments may require a referral from a GP or another recognised healthcare provider.
A useful referral should clearly record the symptoms, when they first appeared, relevant medical history, investigations already completed and the reason for referral.
Insurers use this information to assess medical necessity and determine whether the condition may be connected to a waiting period, exclusion or pre-existing condition. Missing or unclear information may lead to further questions and delay the assessment.
3. Collect the Specialist Report and Estimate
After assessing you, the specialist may provide a diagnosis, recommended treatment plan and estimate of costs.
Where possible, the estimate should identify:
Specialist or surgeon fees;
Anaesthetist fees;
Hospital or theatre charges;
Implant or medical-device costs;
Pathology, imaging and related expenses;
The expected treatment date and facility.
A detailed estimate helps the insurer separate eligible expenses from costs you may need to pay yourself.
4. Request Prior Approval
Prior approval should generally be considered before planned surgery, hospital treatment, cancer treatment or a high-cost diagnostic procedure. For some benefits, it may be mandatory.
A prior-approval request may require your policy number, referral, specialist report, proposed treatment, cost estimate and any relevant ACC decision.
The approval should help clarify:
Whether the proposed treatment is accepted;
The amount the insurer expects to pay;
Your excess or co-payment;
Any amount above the benefit limit;
Items that are not covered;
Any expiry date or conditions attached to the approval.
Prior approval is normally based on the information supplied at the time. If the provider, facility, treatment plan, cost or treatment date changes, notify the insurer before proceeding.
5. Deal With ACC Where an Accident Is Involved
When treatment relates to an accident, ACC will generally need to be considered first. Your health insurer may request ACC’s written decision confirming whether the claim has been accepted, declined or partly funded.
If ACC pays only part of the cost, your health policy may or may not cover some of the balance. This depends on your policy wording and the insurer’s assessment.
Holding private health insurance does not necessarily remove the need to follow the ACC process.
6. Receive Treatment and Submit the Claim
After treatment, the healthcare provider may invoice the insurer directly. In other cases, you may need to pay first and request reimbursement.
Common supporting documents include:
Itemised invoices;
Payment receipts;
Referral letters;
Specialist reports;
Treatment or operation notes;
ACC decisions;
Bank-account evidence;
Any additional information requested by the insurer.
Smaller claims for eligible everyday services may often be submitted through the insurer’s online portal or mobile app. The exact process depends on your policy and insurer.
7. Review the Claim Decision
Once the claim has been assessed, payment may be made directly to the healthcare provider or reimbursed to your nominated bank account.
Check the claim statement carefully, including:
The amount claimed;
The eligible or accepted cost;
The amount paid;
Any excess;
Any co-payment;
Benefit limits used and remaining;
Declined items and the reasons given.
A difference between the invoice and the insurance payment does not automatically mean the claim was calculated incorrectly. The difference may relate to an excess, co-payment, policy limit, non-covered charge, provider fee or other policy restriction.
8. What If the Claim Is Declined?
Ask the insurer to provide its decision in writing and identify the policy provisions on which it relies.
Then consider whether:
The insurer received the complete medical information;
The recorded date of the first symptoms is accurate;
The medical necessity of the referral or treatment is clear;
Further specialist evidence or a clinic letter could address the concern;
The relevant policy provision has been correctly applied.
If you still disagree, you can use the insurer’s internal complaints or review process. After completing that process, you may also be able to approach the independent dispute-resolution scheme to which the insurer belongs.
Final Thoughts
A health insurance claim is not simply a reimbursement request made after treatment. It is a process involving policy checks, referrals, medical evidence, prior approval, treatment and payment.
The most practical step is to confirm your cover before committing to significant costs and keep written records throughout the process. For complicated claims, an insurance adviser may also help organise the documents and communicate with the insurer.
This article provides general information only and is not individual insurance, medical or legal advice. Cover and claim outcomes depend on the policy wording, underwriting terms and the insurer’s assessment.