(a) If any clause, sentence, subsection, section, or other provision of this chapter or the application of such a provision to any person or circumstances is held invalid or unconstitutional, that invalidity shall not affect the other clauses, sentences, subsections, sections, or provisions or applications of this chapter that may be given effect without the invalid clause, sentence, subsection, section, or provision or application and shall not affect, invalidate, impair, or nullify the remainder of this chapter. The effect of the determination of invalidity shall be confined to the clause, sentence, subsection, section, or provision or application so adjudicated to be invalid or unconstitutional, and to that end the provisions of this chapter are declared to be severable.
(b) If any limit on damages prescribed by § 21.2585 is invalidated by a method other than by legislative means, the amount of civil liability for all past and future noneconomic losses, including past and future pain and suffering, mental anguish and suffering, and any other nonpecuniary damage, is limited to an amount not to exceed $150,000.

(c) If a limit on damages prescribed by § 21.2585 is invalidated by a method other than by legislative means and if the alternative civil liability limits contained in Subsection (b) are also invalidated by a method other than by legislative means, § 21.2585 is void.