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What to Do When Your Employer Switches Health Insurer

Switching health insurers can feel stressful, especially if you’re in the middle of treatment. This guide explains exactly what to do, depending on your situation.

Written by Happl Support
Updated over 3 weeks ago

1. How UK Private Medical Insurance (PMI) Works

Before diving in, it’s important to understand one key rule:

👉 You must always get pre-authorisation (pre-approval) before seeing a specialist or receiving treatment.

The typical process is:

  1. Visit your GP and get a referral

  2. Contact your insurer

  3. The insurer:

    • Confirms your cover

    • Approves the claim

    • Provides a claim authorisation number

    • Depending on cover, help find who to see for further treatment

  4. You attend your appointment

  5. The specialist bills the insurer directly using this number

  6. If applicable, you pay any excess directly to the provider

⚠️ If you skip pre-authorisation, your claim may not be covered.

2. If You Haven’t Started a Claim Yet

If you haven’t contacted your current insurer yet:

You have two options:

Option A: Start the claim before the switch

  • Contact your current insurer

  • Get pre-authorisation

  • Begin your treatment

Option B: Wait until the new insurer is live

  • Contact your new insurer

  • Start the process fresh under the new policy

3. If You Have an Ongoing Claim

If you are currently receiving treatment or have an approved claim:

You must act before your next appointment

Step-by-step:

  1. Contact your new insurer as soon as possible

    • Do this before your next appointment or treatment

  2. Tell them clearly:

    • This is an ongoing claim

    • What condition you are being treated for

    • Details of your specialist/hospital

    • Any previous authorisation details

  3. The new insurer will:

    • Review your case

    • Confirm whether it’s covered under the new policy

    • Issue a new claim authorisation number

  4. At your next appointment, provide:

    • New insurer name

    • Policy number

    • New claim number

4. What Happens Behind the Scenes (Helpful to Know)

  • Most UK policies are set up to continue ongoing treatment, provided:

    • The condition is covered

    • The treatment was already in progress

  • This is often referred to as “continuation of care”

👉 However, approval is not automatic, you must inform the new insurer.

5. What If You Forget to Contact the New Insurer?

If you attend treatment without updating your insurer:

  • The specialist may:

    • Not get paid

    • Contact you directly for payment

    • In some cases, escalate or threaten recovery action

If this happens:

  • Stay calm

  • Contact your new insurer immediately

  • Provide your new claim details to the provider

👉 This situation is usually fixable, but acting quickly is important.

6. Common Mistakes to Avoid

❌ Not getting pre-authorisation

❌ Assuming your old claim automatically transfers

❌ Attending appointments without updated insurer details

❌ Ignoring invoices or provider messages

7. Quick Checklist

Before your next appointment, make sure you have:

  • ✅ Contacted your new insurer

  • ✅ Confirmed cover

  • ✅ Received a new claim number

  • ✅ Shared updated details with your provider

8. Need Help?

If you’re unsure at any point or run into issues:

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