curl --request POST \
  --url https://api.halth.com/v1/au/medicare/rebate-estimates \
  --header 'Content-Type: application/json' \
  --data '
{
  "serviceDate": "2026-01-01",
  "items": [
    {
      "itemCode": "10960",
      "chargeAmount": 25000,
      "benefitType": "specialist",
      "id": "123"
    }
  ]
}
'

{
  "id": "<string>",
  "items": [
    {
      "itemCode": "10960",
      "chargeAmount": 25000,
      "benefitType": "specialist",
      "rebateAmount": 123,
      "gapAmount": 123,
      "id": "123",
      "response": {}
    }
  ],
  "totalChargeAmount": 123,
  "totalRebateAmount": 123
}