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Once a manufacturer has received an invoice, payment is due to HHSC within 38 days from receipt of the invoice, to avoid incurring interest. Two CMS forms are required when submitting payment or disputing an invoice:

• Reconciliation of State Invoice (Form CMS-304)
• Prior Quarter Adjustment Statement (Form CMS-304a)

Both forms are submitted with payment to identify where the payment is applied in the rebate system. Refer to the Rebate Administration forms for copies of the forms.