48 CFR §873.102

Commercial service means a service that is offered and sold competitively in the commercial marketplace, is performed under standard commercial terms and conditions, and is procured using firm-fixed price contracts. (38 U.S.C. 8153) Health-care providers include health-care plans and insurers and any organizations, institutions, or other entities or individuals who furnish health-care resources. (38 U.S.C. 8153) Health-care resource includes hospital care and medical services (as those terms are defined in 38 U.S.C. 1701 and services under 38 U.S.C. 1782 and 1783) any other health-care service, and any health-care support or administrative resource. (38 U.S.C. 8153))