An intake visit holds two different things: the paperwork that opens a chart and the clinical work that produces a diagnosis. Only the second one is a service, and only the note can prove it happened. Most intake billing errors are not a wrong code. They are one encounter billed as two services, or an administrative hour dressed up as an assessment.
What this covers
- Intake is a workflow, not a code. The billable piece is the assessment inside it, and the code depends on which clinician performed it.
- 90791 and 97151 describe the same diagnostic work from two professions, and Maryland Medicaid prohibits billing them on the same date of service.
- The CMS Medicare MUE table sets 90791 at 1 unit per date of service, 97151 at 8 units and 97152 at 16 units.
- 97151 is the only adaptive behavior code whose descriptor includes non-face-to-face work: analyzing data, scoring the assessment, and preparing the report or plan.
- Registration, benefits verification and post-session note writing are not billable, and Missouri Medicaid ties that rule to post-payment recoupment.
The assessment is the service. Everything around it in the intake is practice overhead, and the claim has to say which one it is paying for.the line between an intake visit and a billable assessment
Two questions decide whether an intake bill survives a record request. Did a covered clinician perform a billable assessment, and does the note show what that assessment consisted of? Answer both and the code choice follows from the work. Answer neither and the charge has to be argued in an appeal.
What an intake visit is made of
A first appointment for a new patient usually contains registration, benefits verification, consent forms, an interview, some kind of structured assessment, a diagnosis, and a plan. Payers pay for a clinician’s assessment time. They do not pay for the front desk, and they do not pay twice for the same clock.
| Intake task | Billable | Where it belongs |
|---|---|---|
| Insurance verification and authorization calls | No | Administrative work carried by practice overhead |
| Registration, intake forms, consent paperwork | No | Not a service delivered to the patient by a clinician |
| Clinical interview and mental status exam | Yes | 90791 or 90792, the psychiatric diagnostic evaluation |
| Standardized instruments, scoring, record review | Inside 97151 | The only adaptive behavior code that covers non-face-to-face work |
| Assessment report and treatment plan | Inside 97151 | The descriptor names preparing the report and the plan |
| Technician observation under direction | Yes | 97152, a separate code, not an add-on to 97151 |
| Progress note written after a session | No | Indirect work is bundled into the treatment code |
The 2026 Medicare NCCI policy manual states that the diagnostic psychiatric evaluation is not separately reportable with individual, group, family, crisis or other psychotherapy on the same date of service, and that E&M codes are not reported with 90791 or 90792.
The codes that carry an initial assessment
The psychiatric diagnostic evaluation splits on medical work. 90791 is the evaluation without medical E&M, and 90792 is the evaluation with it, so the second code needs a clinician with prescriptive authority. The NCCI policy manual states that E&M codes are not reportable with either one. Medicare’s coverage policy describes both as an integrated biopsychosocial assessment: medical, psychiatric, family and social history, a complete mental status exam, a tentative diagnosis, and an evaluation of the patient’s willingness to take part in the plan.
Applied behavior analysis starts with a different pair. 97151 is the behavior identification assessment performed by the qualified health care professional, and 97152 is the supporting assessment performed by one technician under that professional’s direction. Both are 15-minute codes, and the choice between them turns on the credential of the person who did the work.
| Code | Who bills it | Unit | Limit to check before you bill |
|---|---|---|---|
| 90791 | Licensed clinician without prescriptive authority | One evaluation | Medicare MUE of 1 unit per date of service |
| 90792 | Physician, NP or PA who performs a medical assessment | One evaluation | Medicare MUE of 1 unit per date of service |
| 97151 | Qualified health care professional, typically a BCBA | 15 minutes | Medicare MUE of 8 units per date of service |
| 97152 | Technician under the professional’s direction | 15 minutes | Medicare MUE of 16 units per date of service |
| H0031, H0001 | Varies by state Medicaid program | Per state fee schedule | State manual and the plan’s own lockouts |
State programs cap the assessment pool on top of the federal unit edits. Nevada Medicaid approves 97151 as one session of 16 units per 180 days and 97152 as one session of 4 units per 180 days, and limits assessments to one in every 180 days unless they are prior authorized. Maryland Medicaid’s combination rules cap an initial assessment at 32 units and a reassessment at 12 units per authorization period. Both figures are authorization ceilings rather than per-day ceilings.
Some state programs do not use these codes for intake at all. HCPCS codes such as H0001 for a substance use assessment or H0031 for a mental health assessment by a non-physician carry their own coverage rules. The right code matches the clinician who did the work and the state manual that governs the plan. Medical coding is where that mapping lives, and it gets reviewed whenever a fee schedule changes.
Where the double bill comes from
Intake claims break in a few predictable ways, and each one repeats across every new patient the practice sees.
- The same-day pair. An evaluation billed under 90791 and a behavior identification assessment billed under 97151 for one appointment. Maryland Medicaid lists 97151 and 97152 as codes that cannot be billed with 90791 or 90792 on the same date of service.
- The office visit on top. An E&M code billed with the diagnostic evaluation. The NCCI policy manual states that E&M codes shall not be reported with 90791 or 90792, and a modifier does not change that.
- A second unit of the same code. The MUE for 90791 is 1 unit per date of service, sourced on the CMS table to the code descriptor and the CPT instruction. Two units on one date will not pay.
- Assessment on a schedule. Units of 97151 entered every week for ongoing planning. The guidance issued with the adaptive behavior codes states that day-to-day assessment and treatment planning are bundled into 97153 through 97158 and 0373T, so 97151 cannot report that work.
The credential error sits behind two of those patterns. Technician hours entered on the 97151 line inflate a professional code with technical work, and 97152 billed without a governing assessment looks unsupported to a reviewer. New York Medicaid’s ABA manual names the fields: the assistant’s NPI is the rendering provider, the licensed analyst is the billing and supervising provider, and non-enrolled aides bill under the analyst’s NPI.
When a psychiatrist and a behavior analyst both assess the same patient, the two evaluations belong on separate dates of service or in separate authorization periods. A payer can see two assessments of one patient on one day in the claims data, which makes this the most auditable pattern in behavioral health billing.
Behavioral health revenue cycle management is where the authorization register, the charge template and the code pair check run as one process.
Documentation that makes the assessment stand alone
For the psychiatric evaluation, Medicare’s coverage policy asks the record to show the presence of a psychiatric illness or symptoms sufficient to alter baseline functioning, along with the elements of the evaluation: medical, psychiatric, family and social history, a complete mental status exam, a tentative diagnosis, and the patient’s ability and willingness to participate in the plan.
For 97151, the note has to carry both halves of the descriptor. The guidance written when the adaptive behavior codes were introduced states that the face-to-face time with the patient or caregiver is reported, that 97151 also allows the non-face-to-face work of reviewing records, scoring assessments and preparing a treatment plan, and that the professional must have conducted both parts to report the service.
- The diagnosis written to the highest specificity the record supports, not an unspecified code
- Each instrument or assessment procedure named, with its results present in the note
- Start and stop times beside every billable activity, including the non-face-to-face block for 97151
- The rendering clinician named and credentialed on the note, rather than the supervising professional
- The finished report or treatment plan in the chart, with goals a technician can work from
- The authorization number and unit range the assessment was billed under
This is what a chart audit is for. Comprehensive chart auditing tests a sample of these notes against the standard a reviewer applies, which is cheaper than discovering the pattern in a records request eighteen months later.
How often the assessment can be billed
An initial evaluation is a once-per-episode service in most payer policies, and the second one has to be earned by a change in the patient’s condition. Medicare’s coverage policy says the psychiatric diagnostic evaluation can be conducted once, at the onset of an illness or suspected illness, and may be repeated by the same provider after an extended hiatus in treatment, generally about six months from the last visit for the condition, after an inpatient admission for a psychiatric illness, or for a significant change in mental status.
State and commercial policies set their own windows. New Hampshire’s Medicaid plan limits the psychiatric evaluation to one session per member per six-month period and denies services billed beyond that. Nevada Medicaid allows one ABA assessment every 180 days unless it is prior authorized.
The unit rules and the frequency rules apply together. A MUE of 1 unit applies per date of service rather than per evaluation, so an evaluation that genuinely spans two days sits on two dates of service, each inside the payer’s frequency limit. Anything longer is a reauthorization conversation.
State the new episode, the gap in care, the level-of-care change or the change in presentation that justifies a repeat evaluation.
Read the MAC’s coverage policy for Medicare, the state manual for Medicaid, and the contract for commercial plans. The lookback is not uniform.
When an evaluation runs over two days, bill each date of service on its own line with its own start and stop times.
Where the reassessment requires a new authorization, get the approval before the appointment rather than after the charge is entered.
When the split goes wrong, the clock starts
A double-billed intake is a payment error, and payment errors have a deadline. Under 42 CFR 401.305, a person who has received an overpayment must report and return it by the later of 60 days after the date it was identified or the date the corresponding cost report is due, and identification means knowingly receiving or retaining an overpayment. The practical trigger is the day your own review confirms the error.
Timed codes make this more than a coding question. Missouri’s Medicaid program tells ABA providers to sum active minutes for a procedure code across the day and convert once, to subtract every non-billable minute, and to leave administrative paperwork and post-session progress notes out of billable time. A charge entered from a block of time rather than documented minutes can be wrong in the other direction, so the minutes have to come from the record.
Missouri MO HealthNet states that failure to document services adequately, including subtracting non-billable time from the units billed, may result in post-payment recoupment. A review that finds one intake usually finds the other twenty, because one charge template produced them.
List every new patient appointment in the last twelve months where an evaluation and another timed service appear on the same date.
Run each date against the payer’s combination rules, the current quarter’s MUE table, and the credential of the person who signed the note.
A timely, good-faith investigation into related overpayments suspends the reporting deadline for up to 180 days, so total the exposure before you decide how to report it.
For Medicare, a voluntary refund to the MAC is the usual route for a billing error. Commercial and Medicaid plans have their own overpayment processes.
Put a one-evaluation-per-date rule into the charge template and the scheduling system, so the corrected process stops the repeat rather than a reminder.
Intake billing questions
No. There is no intake code. Payers pay for the clinical assessment inside the visit, reported with the code that names the professional and the work: 90791 or 90792 for a psychiatric diagnostic evaluation, or 97151 for a behavior identification assessment by a qualified professional. Registration, benefits verification and consent paperwork are practice overhead, so the note has to show which part of the appointment was the service.
Treat them as alternatives for one date of service. Maryland Medicaid’s combination rules state that 97151 and 97152 cannot be billed with 90791 or 90792 on the same date of service, and Nevada Medicaid lists the psychiatric codes among the do-not-report codes beside its assessment codes. If two professionals both assess the patient, the evaluations belong on separate dates or separate authorization periods.
One. The CMS Medicare medically unlikely edit table effective October 1, 2026 sets the 90791 maximum at 1 unit per date of service, sourced to the code descriptor and the CPT instruction. A second unit on the same date will not pay. A second evaluation months later is a different question, and the answer depends on the payer’s frequency policy rather than on units.
The record has to show both halves of the descriptor: face-to-face assessment with the patient or caregiver, and the non-face-to-face work of analyzing past data, scoring the instruments and preparing the report and treatment plan. Name the instruments, put start and stop times beside each block of time, state the diagnosis, and keep the finished plan in the chart. The rendering professional signs it.
No. 97151 is the qualified health care professional’s own time. Technician assessment time is 97152, a separate 15-minute code delivered under that professional’s direction. Billing technician hours on the professional line is a credential mismatch, and repeated instances read as upcoding in an audit. New York Medicaid requires the assistant’s NPI as the rendering provider as well.
Start the calendar the day your review confirms the error, because an identified Medicare overpayment must be reported and returned within 60 days under 42 CFR 401.305. A timely, good-faith investigation into related overpayments suspends that deadline for up to 180 days, so look for the same pattern on other dates before you file. A voluntary refund to your MAC is the usual channel for a billing error.
The bottom line
Intake billing failures are rarely exotic. The same visit gets split into two services, or an administrative hour gets carried onto a clinical code, and the charge template repeats the mistake on every new patient. Fix the split at the template and the documentation standard behind it. One assessment, one date of service, one note that shows the work.
Which of your intakes would survive a record request?
Send us one month of new patient visits and your intake template. We will map each charge to the code that supports it, flag the dates where an evaluation and another service were billed together, and show you what a corrected intake process is worth.
Request a free intake billing auditThis article describes general billing practice rather than legal or clinical advice. Unit limits, frequency rules, same-day combinations and documentation requirements vary by payer, state and contract, so confirm them against the current provider manual and your participation agreement.
