; and (ii) any provider whose contract with the plan or issuer has terminated, or was not renewed, for the remainder of the plan year for reasons relating to a medical disciplinary cause or fraud or other criminal activity. (g) Limitations on changes in coverage of prescription drugs (1) In general A group health plan or health insurance issuer offering group or individual health insurance coverage shall not, during a plan year, take any of the following actions with respect to coverage for such plan year: (A) Removing a prescription drug from a formulary of prescription drugs covered by such plan or issuer, except as provided in paragraph (2)(C). (B) Increasing the obligation of an enrollee with respect to cost-sharing, as defined in section 1302(c)(3) of the Patient Protection and Affordable Care Act, required for a prescription drug covered by such plan or issuer. (2) Rule of construction Nothing in this subsection shall prohibit a group health plan or health insurance issuer offering group or individual health insurance coverage from, during a plan year, taking any of the following actions with respect to coverage for such plan year: (A) Changing the policy of the plan or issuer to require an enrollee to use a generic substitution for a branded prescription drug. (B) Adding a new prescription drug to a formulary of prescription drugs covered by such plan or issuer. (C) Removing a prescription drug from such a formulary due to patient safety concerns, a prescription drug recall, or the removal of a prescription drug from interstate commerce as determined necessary by the Secretary. . (b) Effective date The amendments made by this section shall apply to plan years beginning after December 31, 2019. 404. Limitation on balance billing for emergency services (a) In general A health care provider that provides any emergency service to an individual enrolled in a group health plan, group health insurance coverage, or individual health insurance coverage and that is not an in-network provider of such plan or coverage