(a) If a county that has provided for participation of county hospital employees separately from other county employees stops operating a county hospital, the commissioners court of the county, by order, may direct the retirement system to consolidate the separate accounts of the county in the subdivision accumulation fund.
(b) The retirement system shall consolidate the accounts and after consolidation shall charge each obligation of the county arising under this subtitle because of service performed by employees of the county against the consolidated account.
(c) If the participation of a county hospital as a subdivision separate from other county employees is terminated under this subtitle, the retirement system shall pay to the county any excess funds remaining in the subdivision accumulation fund to the credit of the account of the county hospital.