Closer Look At IOP Billing For Behavioral Health Service Providers
Are you seeing changes in IOP billing for mental health in 2023? We certainly are. There are new requirements coming from UHC, BCBS, Cigna, Aetna and all the rest for all levels…
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Behavioral-health revenue intelligence,
built from field experience.
The Axis archive contains years of partner-authored guidance and public discussion about RTC, PHP, IOP, authorization, claim forms, payer routing, medical necessity, denials, and revenue-cycle follow-up.
Older material is preserved for its operating history, while priority guides are reviewed, sourced, and updated for current use.
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Increasing Reimbursement While Decreasing Claim Denials
Throughout the whole process, there are key elements in ensuring success with revenue collections that we will cover in this article. Finding the right people to facilitate and…
The Secret to Getting Reimbursed Quicker – Claims Follow Up
Speedy resolution of your behavioral health facility claims all depends on effective collections follow up. Follow up on all claims should begin as soon as 7 to 10 days after your…
Medical-Necessity Denials in Behavioral Health
How behavioral-health medical-necessity denials work, what documentation matters, and how providers can build stronger appeal packets.
From the Axis archive — older field guidance, retained for context
New Closer Look at PHP Billing For Behavioral Health Service Providers…This is a Positive Thing
PHP and IOP Billing for Eating Disorders
RTC – PHP – IOP Insurance Billing 101
What is a UB04?
Eating Disorder Codes for Insurance Billing
Insurance covers eating disorders just like substance abuse depression and anxiety We are experts at knowing the right codes for the right diagnosis and carrier. We have a…
Medication Assisted treatment Codes for Medicaid
We will use New Hampshire as an example here for medication assisted treatment codes medicaid and the managed care organizations. Medication-assisted treatment (MAT) codes…
Primary and Secondary Insurance Claims Filing. A Step by Step Guide.
Filing Insurance Claims for Medicare Primary & Secondary Mental Health Care Navigating the complexities of insurance claims can be challenging, especially when dealing with…
Correct H0015/IOP or PHP Substance Abuse Claims that are Denied
If your H0015 / IOP claims are denying for CO-197 / No Prior Authorization, normally this code does not require auth, but H0015 TG/PHP does. After working with a rep at…
The “Medical Necessity” Game in Behavioral Health
In our experience, we have seen most approvals or denials of treatment based on the principal of medical necessity. Half of the information needed by insurance companies to…
Insurance Billing for Substance Abuse and Mental Health Cheat Sheet
The most common CPT Codes used by professional clinicians and therapists
How to Write A Referral Letter for PHP Mental Health?
Before creating your template for referring to PHP or other levels of care for behavioral health, it is good to remember some basic medical necessity criteria from insurance.…
7 Aspects Every Behavioral Health Facility Should Know About Billing
Can Psych Visits be Billed Along with a Per Diem IOP Visit? How?
Again, here are a few scenarios to consider:
A General Look at 2023 Medical Necessity Criteria for Behavioral Health
Access to the ASAM Criteria can be found by clicking here.
One Common Insurance Billing Mistake for the Substance Abuse Code for Non-intensive Outpatient Groups for Behavioral Health
Here is the common mistake, not adding the correct modifier. Often times it could possibly be done to use modifier 59 to do 2 groups on the same day, however most carriers…
How to do an Authorization for Behavioral Health
Prepare for the call and make SURE to input all necessary information at the step in the system. Remember, do all work at the steps. Confirmatory Questions1. Patient…
What is the Limit for Number of Patients for a PHP or IOP Behavioral Health Treatment Program?
There are a lot of variables to insurance billing, each policy of a plan needs to be vetted and checked for limitations and criteria
Here’s What an Industry Insider Says About Third Party Insurance Billing
When you think of insurance billing, you probably think of some nice sweet receptionist type person in your doctor’s office taking your insurance card before your appointment…
What you need to know for PHP insurance billing in 2023
What You Need to Know for PHP Insurance Billing in 2023 A partial Hospitalization Program (day hospitalization) is a structured day program providing several hours of therapy…
How to get Reimbursement for IOP S9480 via Telehealth
How is this indicated on the claim form? S9840 is a Healthcare Common Procedure Coding System (HCPCS) code used for telehealth services. However, whether or not insurance…
UHC Direct Pay Issue for Behavioral Health
Is this true from UHC?
How Accurate Insurance Billing Can Improve Patient Outcomes
You may be surprised to know that patients often associate your professional services with things completely removed from obtaining treatment for their addiction or mental…
This Can’t be Right: UBH/Optum Discontinuing Out of Network Benefits
The change will apply to medical and behavioral health services and impacts services that are already subject to prior authorization.
Are You Correctly and Accurately Coding For Mental Health Services?
Nowadays, entities like behavioral health facilities are far more prone to denials and payer audits more than any other medical coverage a patient may have. This puts mental…
Understanding Insurance Issues for Eating Disorders
Understanding Insurance Issues For Eating Disorders Navigating an insurance billing for eating disorders can be a nuisance if you do not know what to do or where to “touch.”…
Denied Insurance Coverage For Mental Health Illness Drawing More Attention
Families are suffering from the strict system placed on behavioral health insurance processes. A system that fails the needs of people who need it the most, because of not…
5 Things to Know when Outsourcing Insurance Billing
So you think to yourself, “ How good it would be if I could just focus more on treating patients, and not have to worry about back office practices. ” Well I have a solution…
5 Insurance Billing Errors Drug Treatment Centers Can Avoid
Is your treatment center experiencing financial difficulties? There are many billing errors that can cause claims to be denied. Payments being delayed, incurring fines, and…
Revenue Cycle Management Tips and Tricks – Behavioral Health
Revenue Cycle Management 101
Why You Need to be Aware of Incident Reports
What is often not understood is how important this documentation plays a part in making sure all benefits are getting utilized from insurance carriers.
How Much Control do you Have Over Denial of Benefits?
As we all know, they are not all created equal and these are HUMAN choices – not policy.
Built from real work
Guidance grounded in operations, then checked against current sources.
Our knowledge base preserves that field experience while reviewing current guidance against payer documents, government sources, recognized standards, transaction evidence, and clearly stated limitations.
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30+ Years
Combined behavioral-health operations, provider, payer, and revenue-cycle experience.
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Facility-Specific Experience
RTC, detox, PHP, IOP, multi-level treatment, authorization, and institutional claims.
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Years of Public Guidance
Partner-authored articles and public answers addressing real facility and billing questions.
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Current Source Review
Important guidance is reviewed against current payer, government, standards-body, and transaction evidence.
Featured article · Denials & Appeals
Medical-Necessity Denials in Behavioral Health.
Few phrases decide more revenue than "not medically necessary." It sounds clinical and final. In behavioral health it is often neither — it is a plan- and product-specific determination you can document against and appeal. By Christopher Ryan · 6 min read.
Read the article →- 01Documentation
- 02Criteria
- 03Appeal strategy
Definitive Guides
Priority guides, reviewed and sourced for current use.
The guides we keep current — reviewed against present payer, government, and standards-body sources.
- In development
Behavioral-Health Levels of Care
Coming soon - In development
RTC Billing
Coming soon - In development
Detox Billing
Coming soon - In development
PHP Billing
Coming soon - In development
IOP Billing
Coming soon - In development
Institutional Behavioral-Health Claims
Coming soon - In development
Authorization and Continued-Stay Reviews
Coming soon - In development
Corrected Claims and Appeals
Coming soon
Axis Methods
The structured methods behind the work.
Our repeatable frameworks for diagnosing stuck claims and prioritizing the work most likely to produce a supportable result.
- Current & reviewed
Seven-Point Claim Diagnostic
Open the method → - Current & reviewed
Claim Value Scoring
Open the method → - Current & reviewed
Authorization-to-Claim Alignment
Open the method → - Updated
Underpayment Review Method
Open the method →
Payer Field Notes
Dated, payer-specific observations.
Each note records the payer, plan or product, state, date verified, issue, source, resolution status, and next review date.
UnitedHealthcare / Optum · Commercial PPO · UT
Historical field note- Payer
- UnitedHealthcare / Optum
- Plan or product
- Commercial PPO
- State
- UT
- Date verified
- 2025-09-14
- Issue
- Concurrent review units approved below requested residential day count
- Source
- Payer provider manual + remittance evidence
- Resolution status
- Resolved on appeal
- Next review date
- 2026-03-14
Aetna · Behavioral-health carve-out · NV
Current & reviewed- Payer
- Aetna
- Plan or product
- Behavioral-health carve-out
- State
- NV
- Date verified
- 2026-01-22
- Issue
- IOP frequency cap applied before authorized renewal date
- Source
- Payer policy bulletin + EOB
- Resolution status
- Monitoring
- Next review date
- 2026-07-22
Historical Archive
Older partner-authored Axis material, retained for history and context.
These publications reflect the operating conditions of their time. Read them for background, and verify current requirements before acting.
- Archived
The 5 Eating Disorders Insurance Covers — and Why It Only Matters to Insurance
CoverageJun 09 - Superseded
Medication-Assisted Treatment Codes for Medicaid
CodingJul 23 - Historical field note
Invisible Wounds: How Trauma and Abuse Show Up in the Medical Field
ClinicalJun 10 - Archived
Primary and Secondary Insurance Claims Filing: A Step-by-Step Guide
ClaimsJun 06 - Superseded
A Closer Look at IOP Billing for Behavioral Health Providers
CodingMay 23 - Historical field note
What If? Key Points of OBBBA for Middle-Class Families & Their Health Insurance
IndustryMay 22 - Archived
Insurance Billing for Substance Use Disorder & Behavioral Health: A Cheat Sheet
ClaimsMay 01 - Archived
Correcting Denied H0015 / IOP or PHP Substance-Use-Disorder Claims
DenialsApr 21 - Archived
When Small Payment Variances Signal a Systemic Underpayment
PaymentsDec 26
Article labels
- Current & reviewed
- Updated
- Archived
- Historical field note
- Superseded
Archive notice: Older Axis publications and community answers may reflect the payer rules, state requirements, coding guidance, systems, and information available when they were written. Current requirements should be verified for the applicable payer, plan, state, contract, provider, and date of service. On community discussion: Questions and replies reflect general operational discussion and are not individualized legal, clinical, coding, accreditation, or coverage advice.
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Last updated: July 5, 2026