Where there is other insurance, no matter how acquired or provided to an insured, the authority shall follow the "guiding principles for overlapping insurance coverages " adopted by the association of casualty and surety companies, the inland marine underwriters association, the national automobile underwriters association, the national board of fire underwriters, the national bureau of casualty underwriters and the surety association of America to determine the obligations of the authority with respect to apportionment of losses with other insurers.
N.M. Admin. Code § 6.50.9.10