What do we need before Iowa Medicaid will pay a new behavioral health program?
Three things, in order. First, the state license or accreditation for what you deliver: an Iowa HHS license for substance use disorder treatment, or HHS accreditation as a community mental health center. Second, Iowa Medicaid enrollment, using your license to pick a provider type. Third, a contract and credentialing with each Iowa Health Link plan you want to bill: Iowa Total Care, Molina Healthcare of Iowa and Wellpoint Iowa. Iowa Medicaid pays nothing for services before its effective date, and enrolling with the state does not put you in any plan's network.
Do we need a state license for IOP, PHP or residential substance use treatment?
Yes. Iowa Code chapter 125 requires substance use disorder treatment programs to be licensed by Iowa HHS, and the license names each level of care you may provide: intensive outpatient (level 2.1), partial or day treatment (2.5), residential levels 3.1, 3.3 and 3.5, and medically monitored intensive inpatient (3.7), among others. A new program can get an initial license for 270 days, which cannot be extended. HHS schedules the on-site inspection within 60 business days of a complete application. An accredited program can apply for a license under deemed status instead.
How long does Iowa Medicaid enrollment take?
Iowa's rule is that Iowa Medicaid tells you its decision within 30 calendar days of receiving a complete and correct application, with any fee and screening results. Its process chart adds that a first review either sends a letter asking for corrections or processes the application within seven business days, and that an application is canceled if requested information does not arrive within 120 days. Approval can be made retroactive up to 12 months, but never before the date you meet the participation criteria, and services before the effective date are not paid. Plan credentialing is separate, and Iowa Total Care says it finishes credentialing within 30 days of a complete application.
Do we have to contract with all three Iowa Health Link plans?
We found no rule that requires it, but each plan pays only under its own contract. A service from a provider with no contract with the member's plan is out of network, needs authorization, and does not get the plan's in-network rates. Members pick a plan or are assigned one, so a program that skips a plan cannot serve that plan's members on in-network terms. For B3 services, Iowa HHS told providers that contracting and credentialing must be finished before the service is delivered.
How are IOP, PHP and residential treatment billed to Iowa Medicaid?
Substance use IOP is billed as H0015 by the program day, and Iowa's guidance for hospital outpatient departments, critical access hospitals, community mental health centers and CCBHCs shows revenue code 0906 with H0015, with or without the TG modifier. Mental health partial hospitalization is H0035 on the state's fee schedule. Residential substance use treatment is a B3 service paid only through the plans, per day: H2034 for level 3.1, H0018 or H0017 with TF for levels 3.3 and 3.5, and H0018 or H0017 with TG for level 3.7, on a UB-04 with revenue code 906. B3 rates are negotiated with each plan.
How long do plans have to decide a prior authorization, and how long do we have to file a claim?
Federal rules cap a standard authorization decision at 7 calendar days and an urgent one at 72 hours for plan rating periods that start on or after January 1, 2026, with extensions allowed in some cases, and Iowa HHS's October 2025 B3 training gave providers the same numbers. Each plan sets its own authorization list, so check the plan's tool before you count days. Claims are due within 180 days of the date of service at Iowa Total Care, Wellpoint Iowa and Molina for an in-network provider, and within 365 days for fee-for-service, and a claim without required authorization can deny.
Do you charge a percentage?
Not on Medicaid claims. Any claim Iowa Medicaid pays, in whole or in part, directly or through an Iowa Health Link plan, carries a flat fee per claim, set per program day or per encounter where that fits, with a monthly minimum, never a percentage of what is billed or collected, and owed whether or not the claim pays. On commercial insurance and Medicare claims, we charge a monthly minimum or a percentage of what payers pay, whichever is greater, never both. Every rate is fixed in writing before the first claim goes out, and payers pay you directly.