N.M. Stat. § 27-2-9
Payment for hospital care.
A. Consistent with the federal act, the department shall provide necessary hospital
care for recipients of public assistance other than those eligible under the general
assistance program authorized by Section 10 [27-2-7 NMSA 1978] of the Public
Assistance Act. The rate of payment for in-patient hospital services shall be based
either on the reasonable cost or the customary cost of such services, whichever is less.
In determining reasonable cost under this section, the board shall adopt regulations
establishing a formula consistent with the federal act. The department shall apply that
formula to determine the amount to which each hospital is entitled as reimbursement for
providing in-patient hospital services.
B. To receive reimbursement for providing in-patient hospital services, a hospital
shall file annually with the department such information as the department may
reasonably require to determine reasonable costs or the hospital's customary cost of in-
patient hospital services.
C. Any hospital entitled to reimbursement for in-patient hospital services shall be
entitled to a hearing, pursuant to regulations of the board consistent with applicable
state law, if the hospital disagrees with the department's determination of the
reimbursement the hospital is to receive.