(a) A health maintenance organization that delegates a function required by this chapter, Chapter 843, 1271, or 1367, Subchapter A, Chapter 1452, or Subchapter B, Chapter 1507, shall execute a written delegation agreement with the entity to which the function is delegated.
(b) The health maintenance organization shall file the delegation agreement with the department not later than the 30th day after the date the agreement is executed.

(c) The parties to the delegation agreement shall determine which party bears the expense of complying with a requirement of this subchapter, including the cost of an examination required by the department under Subchapter B, Chapter 401, if applicable.