ABA Therapy Billing Services

Payers that authorize ABA usually approve it as hours or units for a set period, often split by code, and the most common denial is one code used beyond its own approved units even when total hours are within the limit. We load each approval by code and period, report utilization weekly, and prepare renewals with the updated treatment plan and progress data the payer asks for before the approval ends.

Who can bill matters too. The code descriptors separate services by the qualified health care professional, such as assessment, protocol modification and family guidance, from treatment delivered by a technician. Payers differ on whose NPI goes on technician claims and what supervision they expect to see in the record, so those rules are recorded per payer before the first claim.

The code set is changing: CMS's latest proposed physician fee schedule describes revised adaptive behavior codes and new codes adopted by the CPT Editorial Panel. State Medicaid programs may also use state-specific codes. We apply the codes in effect on each date of service and track each payer's current list.

Commercial coverage for ABA depends on the type of plan: state-regulated plans follow their state's rules, while self-funded employer plans set their own benefits, so the same diagnosis can be covered for one family and not another. We verify the plan type and the ABA benefit for every new client before the assessment is scheduled.

For children under 21 enrolled in Medicaid, the EPSDT benefit requires states to cover medically necessary services for autism, which CMS says can include services typically delivered in ABA, even when the state plan does not list them. Each state sets its own provider, authorization and coding rules. Billing the same family under Medicaid and a commercial plan means two very different sets of rules.