How does section 1902(a) (25) of the Social Security Act (the Act) define "health insurers"?

Section 1902(a) (25) (I) of the Act defines ""health insurers"" to include self-insured plans, group health plans (as defined in section Medicaid Management Information Systems (MMIS)(l) of the Employee Retirement Income Security Act of 1974 (ERISA)), service benefit plans, managed care organizations (MCOs), pharmacy benefit managers (PBMs), and ""other parties that are, by statute, contract, or agreement, legally responsible for payment of a claim for a health care item or service."" Workers' compensation, automobile insurance, and liability insurance plans all are included within the definition of ""health insurer"" for purposes of this section and the requisite state laws which must be enacted pursuant to it.

The CMS interprets ""other parties that are, by statute, contract, or agreement, legally responsible for payment of a claim"" to include:

Prepaid Inpatient Health Plans (PIHPs) and Prepaid Ambulatory Health Plans (PAHPs). For purposes of Medicaid managed care, PIHPs and PAHPs are entities that contract with the state to deliver Medicaid-covered services; in that context, they would also be considered ""other parties that are, by contract, legally responsible for payment of a claim for a health care item or service;"" and,
Such entities as third party administrators (TPAs), fiscal intermediaries, and managed care contractors, which administer benefits on behalf of the riskbearing plan sponsor (e.g., an employer with a self-insured health plan). CMS recognizes that entities such as PBMs and TPAs do not necessarily have ultimate financial liability, but, to the extent that they are required, by contract or otherwise, to review claims and authorize payment by the plan sponsor, they are included within the definition of ""third party"" and ""health insurer"" for purposes of section 1902(a) (25) of the Act.

Nothing in revisions to the Social Security Act made by the Deficit Reduction Act of 2005 (DRA) imposes new liability to pay claims on entities that do not otherwise bear such liability. Nor does section 1902(a) (25) of the Act negate any right of indemnification against a plan sponsor or other entity with ultimate liability for health care claims by a contracting party that pays the claims.