Yes, you can continue to participate in the TexFlex health care FSA or TexFlex limited FSA through COBRA until the end of the plan year by submitting payment to ERS within 105 days from the last day of the month in which your employment ends.
Send a check or money order (payable to ERS TexFlex Program) to ERS using the payment coupons provided to you at the time you terminate employment. Payments are due on the first of each month. You can submit claims for expenses you incur during the months you participate.
for additional payment coupons.