The POS option applies under
TRICARE Prime only. It gives TRICARE Prime enrollees the freedom
to obtain services from any civilian provider. Under the POS option,
when TRICARE Prime enrollees self-refer to a civilian authorized provider
other than their Primary Care Manager (PCM) or for dates of service
on or after January 1, 2018, all requirements applicable to health
benefits under the CHAMPUS Basic Program (
32
CFR 199.4) shall apply, unless otherwise stated in this
section.