Does Fidelis Care Cover Addiction Treatment? New Jersey and New York Plans Explained

Yes. Fidelis Care covers addiction treatment in both New Jersey and New York, through two separate state operations with different plans and rules. In New Jersey, it is an NJ FamilyCare (Medicaid) managed care plan that has managed outpatient substance use treatment directly since January 1, 2025. In New York, the insurer offers Medicaid, HealthierLife, Child Health Plus, Essential Plan, marketplace, and Medicare plans that cover substance use disorder treatment under New York rules.

The state on the member ID card decides which benefits, which network, and which authorization rules apply. A New Jersey card and a New York card are not interchangeable, even though both plans belong to Centene and share a name.

What Is the Difference Between Fidelis Care New Jersey and Fidelis Care New York?

The New Jersey operation is a Medicaid managed care plan for NJ FamilyCare members; the New York operation is a multi-product insurer serving more than 2.4 million members in all 62 New York counties. Each runs its own provider network, member services line, and contract with its state.

• Fidelis Care New Jersey is the former WellCare of New Jersey, renamed on August 1, 2023. It serves NJ FamilyCare (Medicaid and CHIP) and Managed Long Term Services and Supports (MLTSS) members and is one of five NJ FamilyCare managed care organizations, alongside Aetna Better Health, Horizon NJ Health, UnitedHealthcare Community Plan, and Wellpoint. The rename changed only the name: coverage, benefits, and the provider network stayed the same. Members of Wellcare Dual Liberty, the dual-eligible Medicare plan, kept that name. Member services: 1-888-453-2534 (TTY 711).
• Fidelis Care New York, founded in 1993, covers about one in every nine New York residents through Medicaid Managed Care, HealthierLife, Child Health Plus, the Essential Plan, Ambetter from Fidelis Care marketplace plans, and Wellcare By Fidelis Care Medicare Advantage. Member services: 1-888-FIDELIS (1-888-343-3547).

What Addiction Treatment Does Fidelis Care Cover in New Jersey?

The New Jersey plan covers the outpatient substance use continuum for NJ FamilyCare members: counseling, Intensive Outpatient (IOP), Partial Care, ambulatory withdrawal management, and hospital-based withdrawal management. Before 2025, New Jersey paid for most outpatient substance use treatment through fee-for-service Medicaid. The state's behavioral health integration moved that responsibility into the five managed care plans, so a member's addiction treatment is now authorized, coordinated, and paid by the same plan that covers physical health. NJ FamilyCare enrolled 1,823,772 people in May 2026.

New Jersey licenses the day-treatment level as Partial Care; the national term is a partial hospitalization program, ASAM Level 2.5. An intensive outpatient program is ASAM Level 2.1. The plan uses the American Society of Addiction Medicine (ASAM) criteria to decide which level of care a member's assessment supports. NJ FamilyCare covers medication for opioid use disorder, including buprenorphine, naltrexone, and methadone, under its opioid treatment services.

Which Substance Use Services Still Run Through Fee-for-Service in New Jersey?

Short-term residential treatment, long-term residential treatment, residential withdrawal management, and opioid treatment programs remain fee-for-service for NJ FamilyCare Plan A through Plan D members. The plan already covers those services for members enrolled through the Division of Developmental Disabilities, MLTSS, or a FIDE SNP. New Jersey moves residential and opioid treatment programs into managed care, Phase 2 of integration, in January 2027.

Is Prior Authorization Required for Addiction Treatment in New Jersey?

Yes. The New Jersey plan requires prior authorization for substance use Intensive Outpatient and Partial Care; its member notice does not list prior authorization for standard substance use outpatient treatment. Prior authorization is the plan's advance review of clinical documentation to confirm that a level of care meets medical necessity criteria. The treatment provider usually submits the request during intake.

What Was the NJ FamilyCare Transition Period?

The transition period was a temporary state rule requiring NJ FamilyCare plans to approve prior authorization requests for the newly integrated outpatient behavioral health services automatically while networks and processes settled. The New Jersey plan ended its transition policies on September 1, 2026, the last of the five plans to do so: Aetna ended them on November 1, 2025, Horizon NJ Health on April 1, 2026, UnitedHealthcare on May 1, 2026, and Wellpoint on July 1, 2026. Since then, the plan may deny a request on medical necessity, and substance use requests are submitted through the state's NJSAMS system.

How Fast Must a Medicaid Plan Decide a Prior Authorization Request?

Federal rules require Medicaid managed care plans in both states to decide a standard prior authorization request within 7 calendar days and an expedited request within 72 hours, beginning January 1, 2026. A denial must give a specific reason.

What Addiction Treatment Does Fidelis Care Cover in New York?

Every New York health plan the insurer sells covers substance use disorder treatment, but the plan type decides eligibility, cost, and the extra services available.

• Medicaid Managed Care covers inpatient, residential, outpatient, and opioid treatment services with no copays for covered services.
• HealthierLife, the insurer's Health and Recovery Plan (HARP), is open only to Medicaid members age 21 or older whom New York State has identified as HARP-eligible because of a serious mental illness or substance use disorder. It adds Home and Community Based Services such as help finding work, housing, and education.
• The Essential Plan carries no premium for eligible New Yorkers. Beginning July 1, 2026, eligibility returned to incomes below 200 percent of the federal poverty level, and about 450,000 New Yorkers between 200 and 250 percent moved to marketplace plans with higher premiums and out-of-pocket costs.
• Ambetter marketplace plans cover substance use treatment as an essential health benefit, with deductibles and copays set by metal tier.
• Child Health Plus covers children under 19, and Wellcare covers Medicare Advantage members.

Does New York Allow Prior Authorization for Rehab?

Not for the first 28 days of an inpatient stay at an in-network program in New York. State law bars Medicaid managed care plans from requiring prior authorization or conducting concurrent review for the first 28 days of a medically necessary inpatient detoxification, inpatient rehabilitation, or residential stay at an in-network facility certified by the New York State Office of Addiction Services and Supports (OASAS). For New York-regulated insurance policies, a separate rule bars preauthorization for outpatient substance use treatment at in-network OASAS-certified programs. Both protections apply only to OASAS-certified programs in New York.

Is Treatment Covered Across State Lines?

Either state's plan covers out-of-network care, including care in another state, only in an emergency or after the plan approves a prior authorization request. Treatment in the New York and New Jersey metro area often crosses the Hudson, and three rules decide whether coverage follows:

1. Network status comes first. The insurer generally approves an out-of-network request when no participating provider has the training and experience to treat the condition. Without that approval, the member can be billed for the full cost.
2. State protections stop at the state line. New York's no-prior-authorization rules cover OASAS-certified programs in New York. A New Jersey program is licensed by the New Jersey Department of Health, so a New York plan applies its ordinary authorization rules to it.
3. Medicaid follows residency. NJ FamilyCare, New York Medicaid, the Essential Plan, and HealthierLife are each tied to state residence. A person who moves from New York to New Jersey applies for NJ FamilyCare, and the New Jersey plan covers care from enrollment.

Commercial plans sold to employers often have multi-state networks, so the cross-state rules above apply most strictly to Medicaid and Essential Plan members. More on New York coverage is on the New York addiction resources page.

Is Dual Diagnosis Treatment Covered?

Yes. Both state plans cover treatment for co-occurring substance use and mental health conditions, and federal parity law bars stricter limits on that care than on comparable medical care. Under the Mental Health Parity and Addiction Equity Act, a plan's copays, visit limits, and authorization rules for mental health and substance use disorder treatment may be no more restrictive than those for medical and surgical treatment. In New Jersey, the plan covers mental health Partial Care for up to 25 hours a week with prior authorization.

How Do You Appeal a Denied Addiction Treatment Claim?

A Medicaid plan member has 60 calendar days from a denial notice to file an appeal with the plan, and 120 calendar days after a denied appeal to request a state fair hearing. Federal Medicaid rules require plans to decide a standard appeal within 30 calendar days and an expedited appeal within 72 hours when waiting could seriously jeopardize the member's health. The steps are the same in both states:

1. Read the denial notice for the specific reason and the criteria the plan applied.
2. Ask the treating provider for a letter of medical necessity tied to the ASAM level of care.
3. File the plan appeal, and ask for an expedited decision if treatment is urgent.
4. If the plan upholds the denial, request a state fair hearing in New Jersey or New York, and, where available, an independent external review.

How Do You Check Fidelis Care Coverage Before Treatment?

The fastest coverage check combines three sources: the member ID card, the plan's member services line, and the treatment provider's own benefits verification.

1. Confirm the state and plan type on the member ID card: NJ FamilyCare, MLTSS, Medicaid Managed Care, HealthierLife, Essential Plan, Ambetter, or Medicare.
2. Call the matching member services line: 1-888-453-2534 in New Jersey or 1-888-FIDELIS (1-888-343-3547) in New York.
3. Ask whether the provider is in-network for the specific level of care, and whether that level needs prior authorization.
4. Ask the provider to verify benefits and submit any authorization before the first session.

Help finding treatment is free in both states regardless of insurance: ReachNJ, 1-844-732-2465, for New Jersey residents, and the NYS HOPEline, 1-877-846-7369 or text 467369, for New Yorkers. For a mental health or suicidal crisis, call or text 988. Every New Jersey plan that covers addiction treatment is compared on the New Jersey addiction treatment insurance page.