Health & Saf. Code, § 127444

(a) This article does not prohibit a hospital from uniformly imposing charges from its established charge schedule or published rates or preclude the recognition of a hospital’s established charge schedule or published rates for purposes of applying any payment limit, interim payment amount, or other payment calculation based upon a hospital’s rates or charges under the Medi-Cal program, the Medicare Program, workers’ compensation, or other federal, state, or local public program of health benefits.

(b) This article does not prohibit a hospital, debt collector, or debt buyer from selling or otherwise transferring patient debt to an organization that is exempt from taxation under Section 501(c)(3) of the Internal Revenue Code for the explicit purpose of the tax-exempt organization abolishing the patient debt by cancellation of the indebtedness, or otherwise prohibit payment of the patient’s debt by a third party.

(c) A health care service plan, insurer, or any other person shall not reduce the amount it would otherwise reimburse a claim for hospital services because a hospital has waived, or will waive, collection of all or a portion of a patient’s bill for hospital services in accordance with the hospital’s charity care or discount payment policy, notwithstanding any contractual provision.