Title 26 › Subtitle Subtitle K— Group Health Plan Requirements › Chapter 100— GROUP HEALTH PLAN REQUIREMENTS › Subchapter B— Other Requirements › § 9812
Group health plans that cover both regular medical care and mental health or substance use disorder care must treat the two kinds of care equally. This is often called mental health parity. If a plan has no lifetime or annual dollar cap on most medical and surgical benefits, it cannot put one on mental health or substance use care. If it does have such caps, the mental health caps cannot be lower. The same equal-treatment rule covers cost sharing and treatment limits: deductibles, copays, coinsurance, and out-of-pocket costs for mental health care can be no more restrictive than the most common ones the plan applies to most medical and surgical care, and limits on things like the number of visits or days of coverage cannot be stricter either. A plan may not create separate cost rules or treatment limits that apply only to mental health or substance use care. If the plan covers out-of-network medical care, it must cover out-of-network mental health and substance use care on the same equal basis. You also have a right to information. On request, the plan must share the standards it uses to decide whether mental health or substance use treatment is medically necessary, and it must explain why it denied any payment for that care. Plans also use harder-to-see limits, like prior approval rules, step therapy, or narrow provider networks. The law calls these nonquantitative treatment limitations, or NQTLs. A plan that puts NQTLs on mental health or substance use benefits must perform and document a written comparative analysis showing that, both on paper and in practice, those limits are no stricter than the ones used for medical and surgical benefits. This requirement was added by a 2020 law, and plans had to have the analyses ready to hand over starting 45 days after the Consolidated Appropriations Act, 2021 was enacted. Federal officials must ask for at least 20 of these analyses each year, focusing on plans with complaints or possible violations. If officials find a plan out of compliance, the plan gets 45 days to fix the problem; if it still fails, it must tell everyone enrolled within 7 days. Officials must report the results to Congress each year, publish compliance guidance with real (de-identified) examples, and update that guidance every 2 years. There are limits to the rule. It does not force any plan to offer mental health or substance use benefits in the first place; it only requires parity when a plan chooses to offer them. Small employers are exempt, generally those with 2 to 50 employees (or just 1 employee in states that allow one-person small groups). A plan can also claim a one-year cost exemption if complying raises its total costs by more than 2 percent in the first year the rules apply, or more than 1 percent in any later year. That increase must be measured after the plan has followed the rules for the first 6 months of the year, certified in a written report by a licensed actuary, and reported to regulators, who can audit the plan's records for 6 years. If a plan offers you a choice of benefit packages, each package must meet these rules on its own.
Full Legal Text
Internal Revenue Code — Source: USLM XML via OLRC
Legislative History
Reference
Citation
26 U.S.C. § 9812
Title 26 — Internal Revenue Code
Last Updated
Apr 6, 2026
Release point: 119-73