For the operation of the Medicaid audit unit within the division of audit operations to prevent and identify fraud and abuse in the MassHealth system; provided, that the federal reimbursement for any expenditure from this item shall not be less than 50 per cent; provided further, that the division shall submit a report not later than March 16, 2020 to the house and senate committees on ways and means and the executive office for administration and finance detailing all findings on activities and payments made through the MassHealth system; provided further, that the report shall include, to the extent available, a review of all post-audit efforts undertaken by MassHealth to recoup payments owed to the commonwealth due to identified MassHealth fraud and abuse; provided further, that the report shall include the responses of MassHealth to the most recent post-audit review survey, including the status of recoupment efforts; and provided further, that the report shall include the unit's recommendations to enhance recoupment efforts