Maryland's New Mental Health Parity Law: What SB 205 Means for Your Practice

On July 1, 2026, Maryland's mental health parity law got significantly stronger. House Bill 280 and Senate Bill 205 -- passed during the 2026 legislative session and signed into law -- codify provisions of the 2024 federal Mental Health Parity and Addiction Equity Act (MHPAEA) Final Rule directly into Maryland state law, with new enforcement teeth that were not there before.

If you operate an OMHC or any behavioral health program that bills commercial insurance, this law changes the landscape for prior authorization disputes, medical necessity denials, and network adequacy complaints. Understanding what it requires -- and how to use it -- is worth your time.

What Mental Health Parity Actually Means

Mental health parity requires insurance plans to cover mental health and substance use disorder (MH/SUD) benefits no more restrictively than they cover comparable medical and surgical benefits. In plain terms: if your health plan covers ten physical therapy visits for a knee injury without prior authorization, it cannot require prior authorization for ten outpatient therapy sessions for depression.

Maryland has had a state parity law for years, and federal MHPAEA has been on the books since 2008. The problem has been enforcement. Parity violations were often difficult to prove because insurers could point to written policies that looked compliant, even when their actual practices -- prior authorization rates, denial rates, reimbursement levels -- told a different story.

The 2024 federal MHPAEA Final Rule tightened the requirements significantly by requiring insurers to actually analyze their outcomes data and demonstrate parity in practice, not just on paper. SB 205/HB 280 takes those federal requirements and codifies them into Maryland state law, giving the Maryland Insurance Administration (MIA) explicit authority to enforce them.

What the Law Requires of Insurers

The new law adds specific requirements to the Insurance Article that behavioral health providers should understand:

Outcomes data collection and evaluation. Insurers must now collect and evaluate relevant outcomes data for any Non-Quantitative Treatment Limitation (NQTL) -- that is, any non-numeric restriction on coverage such as prior authorization requirements, medical necessity criteria, step therapy protocols, or network design standards. The insurer has to demonstrate that these limitations are applied comparably to MH/SUD benefits as they are to medical/surgical benefits.

Material differences in outcomes data are presumptive violations. This is the significant new standard. If the outcomes data shows material differences between how MH/SUD benefits are administered versus medical/surgical benefits -- for example, MH/SUD prior authorization denial rates are substantially higher than medical/surgical denial rates for comparable services -- that disparity is now considered a strong indicator of noncompliance with MHPAEA. The burden shifts to the insurer to explain and justify the difference.

Meaningful benefits requirement. Insurers must demonstrate that the health benefit plan provides meaningful benefits for each covered mental health condition and SUD in every parity classification in which medical/surgical benefits are provided. This is not just a theoretical coverage requirement -- it must be backed by data showing people can actually access the benefits.

Faster compliance response deadlines. The MIA now has new deadlines within which insurers must respond to requests for compliance documentation. Previously, insurers could delay producing parity analyses indefinitely; the new law sets specific timeframes.

No bias in evidentiary standards. Any information, evidence, or standards used to develop an NQTL cannot be biased or objective in a manner that discriminates against MH/SUD benefits. If an insurer uses certain clinical criteria to determine medical necessity for mental health services, those criteria cannot be systematically more restrictive than what applies to comparable medical conditions.

What This Means for Your Practice

Prior Authorization Denials

Prior authorization is the most common battleground for parity complaints in behavioral health. If Carelon or a commercial insurer is requiring prior authorization for services where they do not require comparable authorization for medical services, that is potentially a parity violation under the new law.

This matters practically for OMHC practices dealing with repeated authorization denials for ongoing therapy, requests for clinical justification that go far beyond what medical specialists face, or step therapy requirements that force clients through specific treatment sequences before approving the service you have clinically recommended.

The new law does not eliminate prior authorization -- it requires that prior authorization be applied comparably to medical/surgical services. If you are consistently facing prior authorization requirements that your medical counterparts do not face for comparable services, that pattern is now more formally addressable.

Denial Tracking Is Now a Strategic Tool

The law's emphasis on outcomes data means that your own denial data -- which you should be tracking anyway for billing purposes -- becomes a potential parity enforcement tool. If you can document that your MH/SUD authorization requests are denied at materially higher rates than comparable medical/surgical services, that data supports a parity complaint to the MIA.

This is a reason to ensure your denial tracking is systematic and categorized. Know your denial rates by payer, by service type, and by denial reason. That data is now relevant beyond just your own revenue cycle -- it is evidence in a regulatory context.

Network Adequacy

The meaningful benefits requirement has implications beyond prior authorization. If an insurer's MH/SUD network is so inadequate that clients cannot actually access the covered benefits in a timely way -- because there are not enough in-network providers, wait times are excessive, or reimbursement rates are so low that providers are not accepting the insurance -- that is a meaningful benefits issue.

Network adequacy complaints to the MIA are now more clearly grounded in the statutory requirement that insurers demonstrate meaningful access, not just theoretical coverage.

What to Do with a Parity Violation

If you believe an insurer is violating parity requirements with respect to your clients:

Document the specific comparison. A parity complaint is most effective when it identifies a specific NQTL and shows that it is applied differently to MH/SUD benefits versus a comparable medical/surgical benefit. "They deny mental health prior authorizations more often" is a concern; "they require prior authorization for outpatient therapy sessions but not for outpatient physical therapy sessions of comparable duration and frequency" is a parity complaint.

File with the Maryland Insurance Administration. The MIA is the enforcement body for the new state parity law. Complaints can be filed at insurance.maryland.gov. Under the new law, the MIA has stronger authority and clearer standards for investigating and acting on parity complaints.

Encourage affected clients to file complaints. Individual insured members can also file parity complaints with the MIA. A pattern of complaints from multiple members of the same plan about the same issue carries more weight than a single provider complaint.

Work with your professional associations. MHAMD (Mental Health Association of Maryland) and other provider associations track parity enforcement and coordinate advocacy. They can be a resource for understanding whether what you are experiencing is an isolated issue or a systemic pattern across providers.

The Broader Significance

SB 205/HB 280 reflects a broader national trend toward treating mental health parity as an actively enforced right rather than a theoretical requirement. The 2024 federal MHPAEA Final Rule that Maryland is now codifying was itself a significant tightening of federal standards -- Maryland is one of a growing number of states moving to align state law with those strengthened federal requirements and give state regulators the tools to enforce them.

For behavioral health providers, this is a meaningful shift in the legal landscape. The barriers that have historically made parity violations difficult to prove -- the opacity of insurer decision-making, the lack of outcomes data requirements, the absence of clear enforcement standards -- are being systematically reduced.

It does not mean the system is now easy to navigate. But it means that when you document your denials carefully, track your prior authorization outcomes, and advocate for your clients through the right channels, the law is more firmly on your side than it has ever been.