Ohio Medicaid ABA coverage: the intake guide.

The ASD diagnosis must come from a documented comprehensive diagnostic evaluation by a licensed physician, psychologist, or other clinician qualified to diagnose autism, demonstrating DSM-5-TR criteria. Optum’s Ohio Medicaid supplemental criteria, which defer to the Ohio Administrative Code on practitioner requirements, restate the same bar: a valid ASD diagnosis issued by a state licensed physician, psychologist, or other state licensed clinician qualified to make such a diagnosis under DSM-5-TR. Several MCOs narrow it further — CareSource restricts the diagnosis to a child or adolescent psychiatrist, psychologist, child neurologist, or developmental pediatrician.^[1][13][6]

Two layers. The statute covers ODM and its designees, including the MCOs: for requests submitted electronically, they must “respond to all prior authorization requests within forty-eight hours for urgent care services, or ten calendar days for any prior authorization request that is not for an urgent care service, of the time the request is received” (R.C. 5160.34). An incomplete request must get a reply naming “the specific additional information that is required.” Stricter rules now override the 10 days. For MCO members (most ABA families), OAC 5160-26-03.1 has required 7 calendar days standard and 48 hours expedited since 1/1/2026. For fee-for-service requests, the federal rule caps standard decisions at 7 calendar days and expedited at 72 hours from 1/1/2026 (42 CFR 440.230(e)). Together: 7 calendar days standard, 48 hours urgent. An adverse decision can be reconsidered: ODM decides “within ten calendar days of receipt,” or within 48 hours for urgent care services (OAC 5160-1-31). None of the rules read here sets an ABA reauthorization lead time.^{[17][18][19][20]}

Ohio Medicaid pays last. OAC 5160-1-08: “The medicaid program must be the last payer to receive and adjudicate the claim,” and the provider must get the other insurer’s details from the family and “bill the insurance company prior to billing ODM.” Ask about other coverage at every visit, whether or not the Medicaid card shows it. ODM pays only after “reasonable measures”: a remittance from the other payer showing a valid reason for non-payment; three submissions within ninety days and no reply within ninety days of the last one; a partial payment with its remittance; or written proof from the other payer that the service is not covered. Valid reasons include “the service is not covered,” charges applied to the deductible or copays, and a benefit maximum reached. Payment “will not exceed the medicaid maximum payment for the service … less all third party payments.” Exception: “Medicaid pays before any TPL and medicare for preventive pediatric services identified in 42 C.F.R. 433.139.” Medicaid also pays before the children with medical handicaps program and the crime-victims reparations program. Neither 5160-1-08 nor the PA rule (5160-1-31) exempts a secondary Medicaid claim from Ohio Medicaid prior authorization.^[21][20]

No age bound could be verified at the state level. OAC 5160-34-02 covers adaptive behavior services for the assessment and treatment of ASD without an age term we could read, and Ohio’s ABA benefit runs through the Next Generation MCOs, whose manuals frame under-21 services under EPSDT — Anthem’s Ohio Medicaid provider manual states that medically necessary services for members under 21 may exceed adult plan limits. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[1][14]

Blocked on: Rules@Medicaid.Ohio.gov or JCARR for the in-force text of OAC 5160-34-02; the member’s MCO for how it applies EPSDT to ABA.

Ohio’s state rule requires a documented comprehensive diagnostic evaluation demonstrating DSM-5-TR criteria but publishes no recency window we could verify. In practice the recency rules in Ohio are plan-level and they differ sharply: CareSource requires a provider letter documenting DSM symptoms within the past year where the evaluation is more than 24 months old, while Buckeye accepts a comprehensive diagnostic evaluation conducted within the past five years. Screen against the member’s MCO, not the state rule. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[1][6][15]

Blocked on: Rules@Medicaid.Ohio.gov for the state rule; the member’s MCO policy for the operative window (MM-0028 for CareSource, CP.BH.104 for Buckeye).

The state rule names no diagnostic instrument — it requires DSM-5-TR criteria demonstrated through a comprehensive diagnostic evaluation and leaves instrument choice to the evaluator. Ohio’s instrument requirements are therefore plan-level: CareSource requires ADOS, ADI-R or CARS-2; Optum, for UnitedHealthcare Community Plan, requires at least one clinically validated screening tool plus one formal diagnostic tool (ADI-R, ADOS or ADOS-2, or DISCO). codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[1][6][13]

Blocked on: Rules@Medicaid.Ohio.gov for whether the in-force rule names instruments; otherwise the member’s MCO ABA policy.

No Medicaid-side referral or service-order requirement could be verified. Ohio’s ordering requirement — services prescribed or ordered by a psychologist trained in autism, a developmental pediatrician, or a pediatric clinical nurse specialist or certified nurse practitioner — sits in the commercial insurance mandate at R.C. 3923.84, which governs insured plans, not Medicaid. Forward-looking and NOT law: ODM’s paused draft 5160-34-03 would require a diagnosing or referring practitioner independent of (not employed by) the ABA provider; that package is pre-filing with no JCARR filing, so it governs nothing today. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[1][3]

Blocked on: Rules@Medicaid.Ohio.gov or JCARR for the in-force rule; the member’s MCO PA packet for what it actually requires with the request.

No per-code state telehealth rule for ABA could be verified. What is published at the plan level: Optum’s Ohio Medicaid criteria state that ABA is available through telehealth under guidelines effective June 2018, conditioned on the member having the basic and advanced prerequisite skills to benefit, a caregiver willing and able to support telehealth, and a thorough provider assessment of the environment and safety concerns — with the session note required to indicate when a service was delivered by telehealth. CareSource covers parent training and supervision by telehealth, and 1:1 ABA by telehealth only when medically necessary under a documented service-delivery plan. ODM’s own Telehealth Services guidance for managed care entities and the Telehealth Billing Guidelines set the underlying rules.^[13][6]

Ask the plan: ODM Telehealth Services: Guidelines for Managed Care Entities and the ODM Telehealth Billing Guidelines, plus the member’s MCO — confirm which ABA codes are payable by telehealth and with which modifier.

Ohio is unusual in setting no fixed ratio at the state level. OAC 4783-6-02 requires the Certified Ohio Behavior Analyst to build a written supervision plan into each client’s treatment plan — naming every supervisee, their relationship to the client and their responsibilities, with the amount and type of training and supervision specified — and mandates consultation before plan initiation and before any modification plus periodic direct observation, while leaving frequency and intensity to the COBA’s documented judgment. Client assessment, treatment-plan development and efficacy review can never be delegated. The quantitative floors come from the plans instead: Optum’s Ohio Medicaid criteria (eff. 7/1/2026) require 1–2 hours of direct case supervision per 10 hours of direct treatment per week, citing CASP; Buckeye’s CP.BH.104 puts 97155 at a minimum of 2 hours a week or 10% of direct hours, whichever is greater, capped at 20% unless justified; and CareSource requires supervision records retained 5 years for COBAs or 7 years for BCBAs and RBTs. Staff to the strictest contracted plan, not the state rule.^{[12][13][15][6]}

Independent practitioners are Certified Ohio Behavior Analysts (COBA, under ORC Chapter 4783) or BACB BCBAs and BCBA-Ds, enrolled with ODM as Provider Type 19, Specialty 190; BCaBAs and RBTs work under supervision. Optum’s Ohio Medicaid criteria add the claim-level detail: COBA providers must be enrolled with Ohio Medicaid as Provider Type 19, Specialty Type 190 and hold a National Provider Identifier for both the rendering provider and the group provider, and a provider not enrolled with Medicaid needs a single case agreement. The routing rule that trips Ohio intake teams is separate and firm: OhioRISE does not pay for ABA — ODM’s Mixed Services Protocol assigns claims for 97151–97158, 0362T and 0373T to the member’s Medicaid MCO or fee-for-service even when the youth is enrolled in OhioRISE.^[1][13][4]

Not resolved. No state-level rule on billing 97153 and 97155 for the same clock time could be verified, and none of the Ohio Medicaid MCO policies we could read states one. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[1]

Blocked on: Rules@Medicaid.Ohio.gov for the in-force rule; otherwise a written coding determination from the member’s MCO (CareSource UM (800) 488-0134, Buckeye UM (800) 224-1991).

No state-level per-day unit ceiling could be verified; Ohio’s daily limits are plan-level and worth knowing individually. CareSource’s reimbursement policy PY-1638 applies the CMS MUE maxima — 97151 at 32, 97153 at 32, 97155 at 24 and 97156 at 16 daily units, among others — and caps behavioral assessments at roughly 6–10 hours per 6-month period without justification. Buckeye’s CP.BH.104 sets 6 hours a day and 30 hours a week as the ceiling absent detailed clinical justification, with under 20 hours a week expected for children attending school full-time. Anthem applies the CG-BEH-02 family parameters of up to 40 hours a week. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[7][15][16]

Blocked on: Rules@Medicaid.Ohio.gov for the in-force state rule; the member’s MCO reimbursement policy for the operative daily maxima.

No state-level session-note signature rule could be verified. The plan-level standards are concrete: Optum’s Ohio Medicaid criteria require the clinician’s signature, date of signature and credentials on the service note, with the clinician credentialed to provide everything documented, evidence of clinical supervision where required, and an explicit indication when a service was delivered by telehealth; the initial individualized treatment plan must be signed and dated by the responsible staff member and the supervising clinician (or carry documentation of clinical supervision), and every review must be signed and dated by the staff member completing it and the supervising clinician. CareSource adds an anti-boilerplate rule — generic copy-pasted symptom language is not sufficient documentation — and, distinctively, requires treatment records to reach the plan before claims: claims are not accepted without accompanying treatment documentation. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[13][6][7]

Blocked on: Rules@Medicaid.Ohio.gov for the in-force state rule; otherwise the member’s MCO documentation policy.

No state-level place-of-service rule for ABA could be verified. The boundary that is confirmed is the school one, from the managed-care side: the MCO is not responsible for payment of services provided through the Medicaid School Program under OAC Chapter 5160-35, 5160-35-04 and 5160-26-03, and Optum separately excludes ABA that is really a 1:1 aide delivered simultaneously during classroom instruction or a service covered under IDEA — while allowing school-based coordination, teacher training, meetings with school personnel and observation in the school setting. Buckeye adds an expectation of under 20 hours a week for children attending school full time. codes.ohio.gov refused connection on every attempt this cycle and the 5160-34 chapter is still missing from the Title 5160 index, so the in-force rule text could not be read — confirm with Rules@Medicaid.Ohio.gov or JCARR. Note also that ODM’s rewritten 5160-34 package is paused and pre-filing, not adopted, so draft content does not govern.^[13][15]

Blocked on: Rules@Medicaid.Ohio.gov for the in-force state rule; the member’s MCO for POS codes it will accept on ABA claims.