If you have a benefits debit card linked to your HRA, pay with your card and qualified purchases will be automatically debited from your HRA. Some HRAs offer automatic payment of your responsibility. If your plan offers this service, your out-of-pocket expenses will automatically be paid from your HRA. Again, refer to your summary plan document to see if this service is available to you. Otherwise, you will be required to pay for the medical service and then submit a claim for reimbursement.
125 Plans/Health Reimbursement Arrangement: How do I access my HRA funds?