If any provisions are contained in a disability insurance policy dealing with the following subjects, they shall conform to the requirements specified:

   (1)   Change of occupation. Any provision respecting change of occupation may provide only for a lower maximum payment and for reduction of loss payments proportionate to the change in appropriate premium rates if the change is to a higher rated occupation, and must provide for retroactive reduction of premium rates from the date of change of occupation or the last policy anniversary date, whichever is the more recent, if the change is to a lower rated occupation.

   (2)   Misstatement of age. Any provision respecting misstatement of age may only provide for reduction of the loss payable to the amount that the premium paid would have purchased at the correct age.

   (3)   Limitations on payments. Any limitation on payments because of other insurance or because of the income of the insured must be in accordance with provisions approved by the commissioner by rule or explicitly approved in approving the policy form, but the commissioner may not promulgate a rule that conflicts with s. 632.755 nor approve a policy form that does not comply with s. 632.755.

   (4)   Facility of payment. Reasonable facility of payment clauses may be inserted. Payment in accordance with such clauses shall discharge the insurer’s obligation to pay claims.