Process

Mental health billing comes with a lot of moving parts. A therapy session or psychiatric visit may seem simple from the provider’s side, but getting that service paid can involve eligibility checks, authorization, documentation, coding, claim submission, and follow-up with the payer. A problem at any one of those stages can hold up payment. For behavioral health practices, this can become frustrating very quickly. A claim may be submitted correctly from the practice’s perspective but still come back unpaid because an authorization was missing, the patient’s coverage had changed, or the documentation did not support what was billed. This is where mental health billing services can make a difference. The work is not limited to sending claims. It also involves checking for problems before submission, keeping track of outstanding claims, working denials, and following up on payments that have not arrived. For psychologists, psychiatrists, therapists, counselors, and other behavioral health providers, having that process under control can take a significant amount of administrative work off the practice. Why Mental Health Claims Get Denied There is rarely just one reason for a mental health claim denial. Some problems start at the front desk, while others are discovered only after the claim reaches the payer. Here are some of the most common areas where problems occur. Eligibility and Coverage Issues A patient’s insurance coverage can change without the practice realizing it. The patient may have changed plans, lost coverage, reached a deductible, or have different benefits for behavioral health services than the practice expected. Verifying eligibility before the appointment gives the practice a chance to catch those issues before providing the service. The check should cover active coverage, benefits, deductible, copay, coinsurance, and any limitations that apply to mental health treatment. For patients coming in for ongoing therapy or other recurring services, eligibility should also be checked regularly. Insurance information that was correct several months ago may no longer be accurate. Missing Prior Authorization Authorization is another common source of problems for behavioral health providers. Some payers require authorization for certain services or limit the number of visits a patient can receive. If those requirements are missed, the claim can be denied even though the service itself was medically appropriate. The billing team needs to know whether authorization is required and, when it is, keep track of the authorization number, approved visits or units, effective dates, provider, and location. It is also important to know when the approved visits are running out. Finding out after the next claim is denied is too late. Coding Errors Mental health billing depends on accurate coding. The diagnosis and procedure codes need to reflect the service that was actually provided, and the information on the claim should be consistent with the patient’s record. A coding problem can be as simple as missing information or as complicated as a mismatch between the service documented and the code submitted. CMS’s current Medicare guidance for psychiatry and psychology services also emphasizes the connection between documentation and the services reported on the claim. Documentation Problems Documentation is another area that can affect payment. The medical record should support the service that was provided and give enough information to establish medical necessity when required. Depending on the service, that may include the patient’s symptoms, diagnosis, treatment plan, progress, and details of the session. When documentation is incomplete, the billing team may have difficulty supporting the claim if the payer requests records. That is why documentation problems are better addressed before a claim goes out instead of waiting until the payer asks for additional information. Telehealth Billing Errors Telehealth has made behavioral health services more accessible, but it has also added another layer to billing. The practice has to consider the service being provided, the place of service, the payer’s requirements, documentation, and the rules that apply to Medicare telehealth. For 2026, one important Medicare change is that the in-person requirement for certain mental health telehealth services provided to patients at home has been delayed. Under current CMS guidance, the requirement takes effect after December 31, 2027. At that point, an in-person, non-telehealth visit will generally be required within six months before the patient’s first mental health telehealth service. After that, an in-person visit will generally be required within 12 months of each mental health telehealth service, with limited exceptions. CMS also says that patients who started receiving mental health telehealth services at home before January 1, 2028, will be treated as established rather than being subject to the initial six-month in-person visit requirement. They will instead be subject to the ongoing in-person visit requirement after the new rule takes effect. Audio-only services have their own requirements as well. Practices should confirm the current Medicare and payer rules for the particular service rather than assuming the same rules apply to every telehealth claim. How Mental Health Billing Services Help Reduce Denials Denial management should not begin when the denial letter arrives. There are several opportunities to catch billing problems earlier. Verify Eligibility Before the Appointment Checking coverage before the appointment can prevent avoidable surprises later. For patients receiving regular behavioral health care, this is especially important because coverage can change while treatment is still ongoing. A quick eligibility check can reveal changes in coverage, patient responsibility, or behavioral health benefits before the practice provides another service. Check Authorization Before Treatment If a payer requires prior authorization, the information should be checked before the service is provided. The billing team should know how many visits or units were approved, when the authorization expires, and whether it applies to the correct provider and location. This also makes it easier to identify when a new authorization is needed instead of discovering the issue after a claim has been denied. Review Claims Before Submission A pre-submission review can catch many of the smaller issues that create unnecessary denials. Depending on the billing system, this may include checking patient information, coding, required claim fields, and other potential errors. It is much easier to correct a claim