N.M. Stat. § 13-7-32
Parity for coverage of mental health and substance use
disorder services.
A. The office of superintendent of insurance shall ensure that an insurer complies
with federal and state laws, rules and regulations applicable to coverage for mental
health or substance use disorder services.
B. An insurer shall not impose quantitative treatment limitations, financial
restrictions, limitations or requirements on the provision of mental health or substance
use disorder services that are more restrictive than the predominant restrictions,
limitations or requirements that are imposed on substantially all of the coverage of
benefits for other conditions.
C. An insurer shall not impose non-quantitative treatment limitations for the
treatment of mental health or substance use disorders or conditions unless factors,
including the processes, strategies or evidentiary standards used in applying the non-
quantitative treatment limitation, as written and in operation, are comparable to and are
applied no more restrictively than the factors used in applying the limitation to medical
or surgical benefits in the classification.