NY Insurance Parity Law: 28-Day No-Preauth Rule

What the law actually says

Insurance Law §§ 3216(i)(30)(D), 3221(l)(6)(D), and 4303(k)(4) — as amended by Chapter 57 of 2019 — prohibit commercial insurers from requiring prior authorization for medically necessary in-network inpatient or residential substance use disorder treatment at facilities licensed or certified by the NYS Office of Addiction Services and Supports (OASAS). They also prohibit concurrent utilization review during the first 28 days of an inpatient admission, provided the facility notifies the insurer of the admission and the initial treatment plan within two business days. At or just before day 14, the facility must conduct a periodic consultation with the insurer using the OASAS-designated clinical review tool to document continued medical necessity. See DFS Circular Letter 13 (2019) at dfs.ny.gov/industry_guidance/circular_letters/cl2019_13.

What it means for you in practice

If you have an in-network private PPO in New York and you're admitted to an OASAS-certified inpatient program: (1) the insurer cannot block your admission with a preauth requirement; (2) the insurer cannot try to push you out of the residential setting mid-stay during the first 28 days, except by showing — through the OASAS-designated level-of-care tool — that the level of care is no longer medically necessary; (3) the insurer cannot apply a higher copay or coinsurance to inpatient SUD than it applies to standard medical inpatient treatment. In combination, these provisions mean the first 28 days are genuinely protected — substantially more than federal parity alone would require.

Which plans are covered by this law

Fully-insured commercial health plans issued in New York: fully covered. New York marketplace ACA plans: fully covered. Student health plans certified under Insurance Law § 1124: covered. Municipal cooperative health benefit plans: covered. Self-funded employer plans governed by ERISA: NOT covered by NY state law (federal parity applies, but NY-specific preauth protections do not). Medicare: different federal framework — separate rules apply. Medicaid: covered under separate NY state regulations through OASAS. If you're not sure whether your plan is fully-insured or self-funded, your HR department can tell you, or look at your summary plan description — self-funded plans typically identify themselves that way.

What insurers can and cannot do

Insurers CAN: require the facility to notify them within two business days of admission; apply concurrent review starting at day 29; require the facility to perform daily clinical review using the OASAS-designated tool; determine medical necessity based on that tool; deny coverage for services that are not medically necessary even during the 28-day window. Insurers CANNOT: require prior authorization; perform concurrent review during the first 28 days; impose copays or coinsurance for inpatient SUD that exceed medical-inpatient rates; deny coverage solely for administrative reasons (per 2020 amendments to NY Insurance Law §§ 3217-b(j)(1) and 4325(k)(1)).

What to do if your insurer violates this

If an insurer denies inpatient SUD admission or tries to pull coverage during the 28-day window, the patient (or the patient's designee) has a right to an internal appeal and then an external appeal to DFS. External appeals must be filed within four months of the final internal adverse determination. DFS maintains consumer complaint routes at dfs.ny.gov. Facilities can also file complaints directly with DFS. Our placement advisors know which insurers have track records of good compliance and which don't, and that factors into program matching.

Frequently asked questions

Does this law apply to my employer's plan?

If it's fully-insured (you pay premiums to a commercial insurer), yes. If it's self-funded under ERISA (large employer acting as its own insurer), no — federal parity applies but NY-specific protections do not. Ask HR or check your summary plan description to find out.

What's the OASAS level-of-care tool?

The OASAS LOCADTR (Level of Care for Alcohol and Drug Treatment Referral) is the clinical review tool that NY insurers and providers use to document medical necessity. It's the standardized instrument for determining whether inpatient is the correct level of care for a given patient — and it's what protects the first 28 days.

What about detox — is it covered the same way?

Yes. The law applies to all inpatient admissions for SUD including detoxification, rehabilitation, and residential treatment at OASAS-certified facilities. The two-business-day notification and 28-day concurrent-review prohibition apply across detox and rehab continuum.

The New York 28-Day No-Preauth Rule, Explained