(a) The nursing facility must refund private funds paid to the facility for periods covered by Medicaid, including retroactive periods of Medicaid coverage, when:(1) the Medicaid vendor payment has been accepted by the nursing facility; or(2) the nursing facility has been notified by HHSC about an individual's eligibility for Medicaid.(b) The nursing facility must make the refund within 30 days of:(1) notification of eligibility for nursing home coverage;(2) notification of correction of applied income; or(3) receipt of any vendor payment from HHSC for any covered period.(c) When the facility becomes aware of the need for a refund as indicated in subsection (a) of this section, facility staff must write to the resident or resident representative, notifying the resident about the right to a refund and the amount due.