N.M. Stat. § 13-7-36
Level of care determinations for the provision of mental
health or substance use disorder services.
A. An insurer shall provide coverage for all in-network mental health or substance
use disorder services, consistent with generally recognized standards of care, including
placing an insured into a medically necessary level of care.
B. Changes in level and duration of care shall be determined by the insured's
provider in consultation with the insurer.
C. Level of care determinations shall include placement of an insured into a facility
that provides detoxification services, a hospital, an inpatient rehabilitation treatment
facility or an outpatient treatment program.
D. Level of care services for an insured with a mental health or substance use
disorder shall be based on the mental health or substance use disorder needs of the
insured rather than arbitrary time limits.