10 United States Code (USC)
Section 1079(a)(13) provides that TRICARE may only pay for medically
necessary care. This statute has been implemented by the Code of
Federal Regulations (
32 CFR 199.4),
which states that TRICARE will pay for “medically necessary services
and supplies required in the diagnosis and treatment of illness
or injury.” Therefore, TRICARE can cost-share only medically necessary
supplies and services. Services that are not medically necessary
are specifically excluded from TRICARE coverage.