Buyer's guide
The best PHP and IOP billing service depends on who does the work.
Day programs like PHP and IOP bill one charge for each day of treatment. If the authorization lapses or the day is coded wrong, the whole day goes unpaid.
At a glance.
| Product | Best for |
|---|---|
| Altair | PHP and IOP programs with no billing team of their own. |
| Prosperity Behavioral Health | PHP programs and treatment centers that want a behavioral-health billing partner. |
| AnnexMed | Behavioral-health groups wanting a large-scale RCM operation that also codes. |
| Practolytics | Behavioral-health practices wanting one generalist partner across billing and coding. |
| Kipu RCM | Facilities that want to run their own behavioral-health billing in software. |
Partial hospitalization bills under revenue code 0912 for up to three services a day and 0913 for four or more, and Medicare requires a physician to certify and recertify the need for the program.
The landscape, by who does the work.
Every option here touches PHP and IOP billing, but the models differ. Some are behavioral-health services where billers work your claims off your desk. Some are software your own staff runs to file claims. Altair is the done-for-you model, run by AI and backed by our in-house billers, on the systems you already use.
Done for you, run by AI and backed by expert billers
Altair works the claims. Our billers handle the exceptions. Nothing comes back to your front desk.
Altair
Runs the whole PHP and IOP claim on the systems you already use. Checks each claim against the payer's current policies before it goes out, including the per-diem revenue codes for partial hospitalization (0912 and 0913) and intensive outpatient (0905 and 0906 with H0015 or S9480), place-of-service 52, prior authorization and utilization review, and the trap where S9480 pays commercial and managed-Medicaid plans but not Medicare, so the ones that would deny get caught first. Works denials on arrival, files appeals, posts payments, and sends patient statements. Our in-house billers work the exceptions.
Best for: PHP and IOP programs with no billing team of their own.
Behavioral-health billing services for PHP and IOP
Billers that specialize in behavioral-health and substance-use programs, off site, under a service contract.
Prosperity Behavioral Health
A behavioral-health billing service with a partial hospitalization focus, partnering with treatment centers to run the full revenue cycle: verification of benefits, prior authorization, utilization review, denials, accounts receivable, credentialing, and analytics. It pairs its billing team with healthcare automation tools. Coding is not among the services it names.
Best for: PHP programs and treatment centers that want a behavioral-health billing partner.
Capture RCM
A behavioral-health and substance-use billing service with a partial hospitalization emphasis, working end to end: claim submission, authorization and utilization review coordination, credentialing, denials and appeals, and compliance. It runs as a nationwide managed service led by its billing team. Coding is not among the services it names.
Best for: Substance-use and PHP programs that want a nationwide behavioral-health biller.
Aspect Billing Solutions
A billing service specializing in substance-use intensive outpatient and partial hospitalization programs. It covers the full cycle, including coding, credentialing, eligibility, prior authorization, utilization review, claim scrubbing, and denials, delivered as a managed service with billing technology behind it.
Best for: IOP and PHP substance-use programs that want billing and coding handled together.
Behavioral-health RCM with an AI engine
A managed team paired with software the vendor describes as AI-driven.
AnnexMed
A revenue-cycle firm with a dedicated behavioral-health line covering IOP, PHP, substance-use and medication-assisted treatment, and psychiatry. It runs the full cycle, including coding, credentialing, prior authorization, denials, and accounts receivable. The firm describes AI agents and intelligent automation, a session-based CPT validation engine, and behavioral-health denial intelligence among its tools.
Best for: Behavioral-health groups wanting a large-scale RCM operation that also codes.
MedCare MSO
A behavioral-health and addiction billing service covering IOP, PHP, and addiction centers across the full cycle, including coding, credentialing, eligibility, denials, and accounts receivable. It offers both a managed service and its proprietary Maximus software, and describes AI-powered automation and AI-powered claim scrubbing among its tools.
Best for: Addiction and behavioral-health centers wanting a service or software from one vendor.
Multi-specialty RCM with a behavioral-health line
A generalist revenue-cycle firm with a behavioral-health line that codes as well as bills.
Practolytics
A multi-specialty billing company with a behavioral-health line covering IOP and PHP, staffed by coders trained in behavioral health. It runs the full cycle, including coding, credentialing, eligibility, denials and appeals, and compliance audits, with attention to 42 CFR Part 2 and mental-health parity.
Best for: Behavioral-health practices wanting one generalist partner across billing and coding.
A different model: software you run
Not a biller you hire. Software your own staff runs to file claims. Listed so the comparison is honest.
Kipu RCM
Behavioral-health and addiction revenue-cycle software the facility runs, built on AveaOffice after Kipu's 2021 acquisition. It covers eligibility, utilization review, automatic claim generation, patient billing, and self-pay, and integrates with the Kipu EMR. It is a platform your staff operates rather than an outsourced billing service, so credentialing and coding are not part of it.
Best for: Facilities that want to run their own behavioral-health billing in software.
Behave Health
Behavioral-health and addiction billing software with an EHR, run by the facility. It covers verification of benefits, automated claim scrubbing, denials, and utilization review as software your staff operates rather than an outsourced billing service, so credentialing and coding are not part of it.
Best for: Programs that want billing and records in one system they run themselves.
Based on publicly available vendor information, current as of August 2026. Vendor names are trademarks of their respective owners and are not affiliated with Altair.
Choosing a PHP or IOP biller, answered.
What should a PHP or IOP program look for in a billing service?
Start with who does the work, and with which model. A billing service works your claims off your desk; software leaves the filing to your own staff. Then ask whether the service knows the per-diem structure, the revenue codes for partial hospitalization and intensive outpatient, place-of-service 52, and the prior authorization and utilization review that keep each day authorized, and whether it checks each claim against the payer's current policies before submission.
Why do PHP and IOP claims deny?
The per-diem structure is unforgiving. Each treatment day bills as one line under a specific revenue code, so a wrong code, a missing place-of-service 52, or a lapsed authorization takes down the whole day. Utilization review decides whether the next days stay covered, and S9480 pays commercial and managed-Medicaid plans but not Medicare, so a claim sent to the wrong payer on that code comes back.
Is Kipu RCM or Behave Health a billing service?
Not in the hire-a-biller sense. Kipu RCM and Behave Health are software your own staff runs to file claims, so credentialing and coding are not part of them. That differs from hiring a billing service, where billers work your claims off your desk while you keep your own payer contracts.
Can Altair do our PHP and IOP billing if we have no biller on staff?
Yes. Altair is the done-for-you billing service for programs with no billing team, run by AI and backed by our expert in-house billers. Altair checks each claim against the payer's current policies before it goes out, works the denials, files appeals, and sends patient statements.