ABA Session Notes Examples That Hold Up to an Audit

These ABA session notes examples show the whole note, from the header to the signature, for the sessions a template doesn't handle well. Below you'll find one complete note annotated line by line. After it come six shorter examples for common situations and the wording rules that make any note readable to a payer.

Picture 6:40 on a weeknight. You've run three sessions back to back, and the note for the 3:00 one still says the client had a good session. The trial counts are on a data sheet in your bag, and you'd have to guess the minute the snack break started and whether it ran ten minutes or fifteen. Whoever reviews that note later wasn't in the room, so they'll judge the session by what's on the page and nothing else.

Key Takeaways

• Write what you saw and counted: A reviewer can only pay for what the note shows, so describe the client's behavior in counts and trial results and leave out guesses about feelings.
• Make each note match its claim: The clock times, billing code, and goals in the note should line up with the schedule, the claim, and the active treatment plan, since those mismatches are what federal auditors flag most.
• Technicians and analysts document different things: A behavior technician records what happened when the plan was run, a BCBA records the clinical decisions behind it, and each person signs the note for the service they delivered.
• Get help with the rest of the practice: BCBAs who own their practice can partner with Alpaca Health for credentialing, billing, and payouts, with session note and treatment plan tools built into the platform and the clinical decisions left to you.

What goes in an ABA session note

Payers word their requirements differently, but the elements they check barely change from plan to plan. The ABA documentation policy used by Centene-affiliated health plans is a useful benchmark, because it spells out each one. State Medicaid rules cover much of the same ground.

• Who and when: The client's name, a date of birth or other identifier, the date of service, and clock start and end times (3:00 to 5:00 p.m., not "2 hours"), plus any pause, such as a snack break, with the minute it started and ended.
• Where and which service: The location and the billing code, so a reviewer can match the note to its line on the claim.
• Who was there: The person who delivered the service, everyone else present and their relationship to the client, and the supervising Board Certified Behavior Analyst (BCBA) when a Registered Behavior Technician (RBT) ran the session.
• What you did: The procedures from the treatment plan, named clearly enough that another clinician could repeat them.
• What the client did: Counts, durations, trial results, and prompt levels for each target you worked on.
• Progress and barriers: How today's data compares with the treatment plan goals, with setbacks and anything that got in the way.
• What comes next: What continues, what changes, and what needs the BCBA's review.
• Signature: The name, credential, and signature of the person who delivered the service, added after the session ends and before the claim goes out.

A written note becomes a billable one when it supports the exact code and units on the claim. Each CPT code (the five-digit billing code on the claim) names one service. For example, 97153 is treatment by protocol, delivered by a technician under a qualified professional's direction. Its partner code, 97155, is treatment with protocol modification, delivered by the qualified professional, usually the BCBA. Both are billed in 15-minute units, so a 97155 note has to show a protocol change and a 97153 note has to account for every unit billed, however good the therapy was.

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A complete ABA session note example

The note below is for a fictional two-hour clinic session run by an RBT and billed as 97153. The left column is the note as it would sit in the chart, read top to bottom. The right column explains why each part is there.

Almost every line gives the reviewer something to check, like a clock time, a prompt level, or a goal number from the treatment plan. The hand-washing line works because the skill was broken into a task analysis ahead of time. That lets the note name the one step that still needs help, where a vaguer note would only say the client worked on hand-washing. The snack break is logged and left unbilled, since billed time should be treatment time. Billed time that runs straight through a meal is one of the easiest things for an auditor to spot.

ABA session notes examples for different situations

A template built for an ordinary afternoon starts to break when the client refuses the table, the BCBA joins by video, or a target hits criterion. Each example below is a fictional excerpt, with the header cut down to the lines that matter. A short explanation follows each one.

A session that went well

97153 | Clinic | 9:00 to 11:00 a.m. | Present: client (J.L.), RBT. Manding for preferred items (goal 1.3): 14 independent mands using 2- to 3-word phrases (for example, "want blue car"), compared with a mean of 6 per session over the prior 5 sessions. 3 more mands followed an echoic prompt. 2 independent mands were directed to a novel adult (front desk staff) during arrival, the first recorded with anyone other than the RBT or a parent. No target behaviors recorded. Plan: continue; BCBA to review generalization data at the 9/10 supervision visit. Signed: Priya S., RBT.

A reviewer can check "14, up from a mean of 6" against the data sheet, while "had a great session" gives them nothing to check. The mands to a new adult earn their own line, because generalization to new people is often a separate goal in the plan.

A session with problem behavior

97153 | Family home | 3:30 to 5:30 p.m. | Present: client (R.K.), RBT; father in the next room. Screaming (vocalizing above conversational volume for 3 seconds or longer, per the behavior plan): 4 episodes, 10 to 25 seconds each, all within 30 seconds of the tablet being removed at the end of a scheduled break. Per the behavior plan, the RBT kept the tablet off during screaming and prompted the replacement request ("more tablet, please"). R.K. used the prompted request after 3 of 4 episodes and received 1 more minute before the transition, and returned to table work within 2 minutes each time. No injuries; no restrictive procedures used. Plan: continue the plan as written; send episode data to the BCBA before the 9/12 visit. Signed: Marcus T., RBT.

The note uses the plan's definition of the behavior and counts and times each episode. It ties the pattern to the function of the behavior already identified in the plan, which is getting a preferred item back. That shows the RBT's response was the planned one. The note also records the replacement request, the skill the plan is trying to build.

A mostly refused or cut-short session

97153 | Clinic | Scheduled 9:00 to 11:00 a.m.; delivered 9:00 to 9:45 a.m. | Present: client (A.D.), RBT. Table work, 9:00 to 9:15: A.D. responded to 3 of 12 instructions and pushed materials away on the other 9. At 9:15 the RBT followed the plan's escape protocol (one instruction every 2 minutes, choice of task order), with no change in responding. At 9:25 the RBT moved to natural environment teaching in the play area per the plan, and A.D. completed 4 of 6 mand opportunities. At 9:45 A.D. said "tummy hurts" twice and held his stomach; the RBT called his mother, who picked him up at 9:55. Session ended 9:45; 3 units billed. BCBA notified at 9:50. Plan: repeat the preference assessment at the start of the next session. Signed: Jordan P., RBT.

A short session is still billable for the time delivered, as long as the note shows when it stopped and why. The switch to natural environment teaching is written as a planned step, since the plan called for it. Billing the scheduled two hours here would be the units-exceed-the-note error that federal auditors keep finding.

A parent training session

97156 | Family home | 5:00 to 6:00 p.m. | Present: BCBA, mother (A.R.), father (D.R.); client (L.R.) present 5:40 to 6:00 p.m. Target: caregiver goal 2, the 4-step bedtime visual schedule. BCBA reviewed the steps, modeled them with L.R., and had each parent rehearse. Fidelity on the 4-step checklist: mother 4 of 4 on her second rehearsal; father 3 of 4 (skipped the first/then statement), then 4 of 4 after feedback. Barrier: bedtime overlaps with a sibling's bath, so the parents chose a 7:30 p.m. start. Plan: parents record schedule use nightly on the data sheet provided; BCBA reviews it at the 9/16 session. Signed: Dana R., BCBA.

The code for caregiver guidance, 97156, describes coaching caregivers to carry out treatment protocols. So the note has to show the protocol, the coaching method, and how each parent performed, and a record of a general chat about progress won't support it. Coverage varies by payer as well. Federal auditors found that Colorado's Medicaid program didn't cover parent training during the 2022 and 2023 period they reviewed.

A telehealth session

97155 via telehealth (secure video) | BCBA at office; client (S.B.) and RBT at family home, mother in the room | 4:00 to 4:32 p.m.; video froze 4:12 to 4:14 p.m., not billed; 2 units | Camera and audio working for all participants. Issue: two-step instructions have held at 5 of 8 independent for 4 sessions. Modification: BCBA changed the step-2 prompt from a gestural prompt to a 2-second time delay and directed the RBT through 6 trials; S.B. responded independently on 4 of 6 by the end of the segment. Plan: RBT runs the time-delay procedure for the next 3 sessions; BCBA reviews the data 9/12. The RBT's 97153 note covers the same session separately. Signed: Dana R., BCBA.

Telehealth notes need lines an in-person note can skip. They should say where each person was, who delivered the procedure, whether cameras and audio worked, and how many minutes any connection problem cost. Before billing, check that your payer allows 97155 by video and which of the place-of-service codes it wants. The Centers for Medicare & Medicaid Services (CMS) uses 02 for telehealth outside the patient's home and 10 for telehealth in the home.

A session where a goal was mastered

97153 | Clinic | 1:00 to 3:00 p.m. | Present: client (T.W.), RBT. Identifying emotions in pictures (goal 3.2): 9 of 10 independent (90%). With 9/4 (90%, Priya S., RBT) and 9/8 (100%, Jordan P., RBT), T.W. has met the treatment plan's mastery criterion of at least 90% independent across 3 consecutive sessions with 2 different staff. Mastery data sent to Dana R., BCBA, at 3:10 p.m. Plan: per the plan's mastery procedure, move the program to weekly maintenance probes after BCBA review; baseline for the next target in the sequence (identifying emotions in peers' faces during play) scheduled for 9/12. Signed: Jordan P., RBT.

A mastery note states the criterion from the plan and the data that met it, and it leaves the call on what comes next with the BCBA. A bare "goal achieved" can't be checked against anything. It also skips the maintenance step that keeps a mastered skill from fading.

How to word an ABA session note

The core rule is to describe what you saw and counted. A reader can check a description against your data, but there's no way to check an interpretation. Words like "frustrated," "stubborn," and "didn't want to" are guesses about what was going on inside the client, and nobody but the client can confirm them.

• Describe behavior a camera could record: "Hit the table 3 times" belongs in the note, while "was angry" doesn't, unless the client said it, in which case you quote what they said.
• Keep it professional and concise: Skip slang, exclamation points, and filler, and keep play, meals, and downtime from reading like therapy, because auditors from the Office of Inspector General at the Department of Health and Human Services (HHS-OIG) flagged Colorado notes describing recreational activities, day care, or custodial care, which may not count as ABA, in 88 of 100 sampled months.
• Name the procedure in ABA terms: Write "first/then visual," "token board," or "differential reinforcement of an alternative behavior" and pair it with the client's response, and leave routine data points to the data system so the narrative covers what was significant, changed, or got in the way.
• Stay neutral: Words like "acted out," "manipulative," and "non-compliant" assign intent, so describe the action, how many times it happened, and how long it lasted.
• Use terms a payer knows: Write "clinic-based session" or "group instruction," and keep internal names like "the Discovery Room" or a program nickname out of the note.

So why do "had a good session" and "was non-compliant" both fail? Neither one gives the reviewer a behavior, a number, or a procedure to check, whether the label is praise or blame. In the Indiana audit, HHS-OIG found notes where, besides the data, the only description of the session was the child's general mood, such as happy or tired, or what the child ate. It counted those as missing a detailed statement of the services provided.

How RBT notes and BCBA notes differ

A technician documents what happened when the existing plan was run, and the supervising analyst documents the decisions that shape the plan. Both kinds of note sit in the same chart and describe the same client. They still answer different questions for a reviewer, and they support billing codes with different descriptions. The split mirrors how the RBT and BCBA roles divide the work in general, with one delivering the plan and the other designing and adjusting it.

What goes in an RBT's session note

An RBT documents at the level of the session and the trial. That means the programs run, the prompts used, the client's responses, and behavior events with counts and durations, plus anything unusual, like a pause or an early end. The note reports on a plan the BCBA already wrote, so it doesn't set clinical direction or change a protocol. When something needs changing, the note says so and flags it for the BCBA.

The Behavior Analyst Certification Board (BACB) treats this as part of the job. Its RBT Ethics Code requires RBTs to "accurately complete all required documentation (e.g., client data, billing records)," and your supervisor should be reading what you write. The RBT Handbook requires supervision for at least 5% of your service hours each calendar month. It also lists reviewing daily progress notes and data sheets among the supervision activities.

Many payers also want the supervising BCBA named on an RBT's note. Centene's policy, for one, asks for the printed names and signatures of the rendering technician and the supervising practitioner where applicable. If the BCBA joined the session, record when they arrived and left and what they did. Where the payer allows concurrent billing, the BCBA may bill that overlapping time as 97155, so the two notes need to agree.

What a BCBA's notes add

A BCBA's notes carry the clinical reasoning. For 97155, that means the problem the BCBA saw, the change made to the protocol, and why, all with the client present. HHS-OIG counted 97155 notes as unsupported in Indiana when they said no modification was made. In Colorado, it did the same when the billed time was a meeting with the parents to discuss the child's goals and progress.

Payers don't all read 97155 the same way. Centene accepts a clear rationale when no change was needed, but only if the note lists the protocol parts reviewed and the clinical reason for keeping them. Its policy also says technician supervision alone or a team meeting isn't a protocol modification.

The other BCBA codes have their own tests. A 97156 note has to show guidance to caregivers on a treatment protocol. A 97151 note covers assessment work, which the CPT description defines as administering assessments, analyzing past data, scoring, and preparing the report or treatment plan. Supervision records are a separate set of documents, and the BACB Ethics Code requires behavior analysts to keep them for at least 7 years (Section 4.05).

Who signs each note

The person who delivered the service signs the note for it. Indiana officials told HHS-OIG that notes for an RBT's session must be signed by the RBT, so one facility's practice of having BCBAs sign every note didn't meet the rule. The same audit found a BCBA signing for services a different BCBA delivered, often months after the claims went out. In Colorado, auditors found a billing team pasting a scanned signature image onto notes before submitting claims. Electronic signatures are fine where your state and payer allow them, though Colorado's rules require the printed record to show they were applied electronically.

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How to write ABA session notes that pass an audit

Medical necessity (the payer's test of whether a service is clinically needed for this client) has to be visible in each note. The reviewer compares the note with the code billed and the authorized treatment plan, and that's all they have. If the note is silent on something the payer requires, that part of the service counts as undocumented. That's why the progress line matters as much as the data, since it's where the note shows the service is still helping the client.

HHS-OIG has finished four state audits of Medicaid autism therapy payments so far, in Indiana, Wisconsin, Colorado, and Maine. In every one, all 100 sampled months of a child's claims included at least one payment that was improper or potentially improper. In Indiana, session notes failed documentation requirements in 95 of the 100 months. They didn't support the billing code in 81, didn't support the number of units in 52, and lacked a valid signature from the person who delivered the service in 39. OIG estimated Indiana paid at least $56.5 million improperly and recommended the state refund $39.4 million, the federal share.

Billed units that exceed the note's clock times read as red flags. Naps or meals inside billed hours do too, and so does a goal that isn't in the active treatment plan. Copied text is another, and Colorado's audit found a BCBA's note cloned from a prior day down to the wrong date. For practices billing Centene-affiliated plans, the policy says that if 97155 requirements aren't met, all ABA claims for that client over the six-month authorization are subject to a 10% recoupment (the payer taking back money it already paid).

Guidance from CMS for behavioral health practitioners tells providers to turn off auto-fill and watch for cloned notes. It describes those as notes that look identical from visit to visit, which may not reflect what happened in that encounter. The same guidance recommends a self-audit, where someone other than the author pulls a random sample of charts and checks them against your documentation policy. Then the team fixes whatever keeps showing up.

A pre-claim check that compares each note's clock times and signature with its claim line belongs in the same routine. It fits naturally into your medical billing for ABA workflow. The behavior analyst code of ethics points the same way. It requires detailed, high-quality documentation (Section 3.11) and accurate billing, and it requires you to correct any billing error you find (Section 2.06).

How long an ABA session note should take

Most of the time a note takes goes into reconstructing the session. So a note drafted during natural breaks and finished right after the client leaves takes less time than one written from memory that evening. State and payer rules point the same way, since Colorado's Medicaid rules require records to be created at the time services are provided. Indiana's rules require documentation at the time of service and before the claim, and Centene wants any note written on a later date to show when it was written and why.

Just don't sign before the session is over. Colorado's audit found electronic notes signed as much as 1 hour and 44 minutes early, and HHS-OIG said notes signed early raise questions about whether the full session happened.

Preparation does a lot of the writing for you. Before the session, open the active treatment plan so you can name programs and goal numbers the way the plan does. Then set up the data sheet or app before the client arrives. Good ABA data collection software helps here, because the numbers you record during trials can flow straight into the note. That leaves you to write only the parts that need you, like what you changed and what the BCBA should look at.

Templates are useful for structure, and the risk starts when they fill in the content for you. A template that won't let you skip required fields like clock times and the signature catches omissions. Auto-filled narrative does the opposite and produces the near-identical notes CMS warns about.

The same goes for AI for therapy notes, which can save typing, though the draft still has to match what happened in the room. Practices that partner with Alpaca Health run on its platform, where AI session note and treatment plan tools are built in and the clinical decisions stay with the BCBA. Whatever produces the first draft, the person who ran the session reviews and corrects it before signing.

Common ABA session note mistakes

Most documentation findings trace back to a few habits. Nearly all of them start with writing the note too far from the session, or with borrowing from the last one.

• Copy-pasting yesterday's note: Carried-over text is how cloned-note findings start, and in Indiana HHS-OIG found handwritten notes, and even an RBT's signature, photocopied from day to day.
• Data that contradicts the narrative: "Engaged well throughout" next to a data sheet showing nine refused trials tells a reviewer the narrative wasn't written from the session.
• Writing it later and guessing the times: Reconstructed start and end times drift, and billed units that exceeded the note's times showed up in 52 of 100 sampled months in Indiana, 63 in Colorado, and 77 in Wisconsin.
• Signing early, late, or for someone else: A signature added before the session ends, months after the claim, or by someone who didn't deliver the service leaves the note unsupported.
• Using judgment words: "Manipulative," "stubborn," and "had a meltdown" record your interpretation, and the fix is the same as in the table above, which is to say what the client did, how often, and for how long.
• Overwriting a mistake: If you find an error after signing, add a dated addendum that points to the original note and carries your name, signature, and credential, and leave the original in place.

How Alpaca Health helps BCBAs running their own practice

Alpaca Health partners with BCBAs who want to own their practice without running the back office alone. You keep your own LLC and brand, and your practice runs on Alpaca Health's platform, with AI session note and treatment plan tools built in and every clinical decision left to you. Alpaca Health credentials you under insurance contracts it already holds, handles billing and any denials or appeals, and pays you every two weeks. If a claim is denied or delayed, Alpaca Health takes the loss and nothing is clawed back from your practice, though your notes still need to be accurate. Book a free demo to see how it would work for your practice.

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Frequently asked questions about ABA session notes

What should be included in an ABA session note?

Every note needs the client's identifiers, the date with clock start and end times, the location, and the service code. It also needs everyone present, the procedures used, data on the client's responses, progress toward goals, a plan for next time, and the signature of the person who delivered the service. Many payers want each pause logged with the minute it started and ended, too.

How do you write a good ABA session note?

Write it during natural breaks and finish it as soon as the session ends, with the treatment plan open in front of you. Describe what the client did in counts and trial results, and name the procedure you used. Tie each result to the goal it measures. Then check the clock times and units against the schedule before you sign, because a mismatch there fails review even when the therapy was excellent.

What should you not write in an ABA session note?

Leave out guesses about feelings or intent, such as "frustrated" or "stubborn," along with slang, exclamation points, internal room nicknames, and text carried over from a previous note. Keep play and naps from reading like billed therapy, too. Descriptions of recreation, day care, or custodial care were among the most frequent problems federal auditors flagged in Colorado.

How long should an ABA session note be?

It should be long enough that every billed unit is backed by a description of what happened. HHS-OIG found that Indiana's Medicaid rules don't set a length. Even so, its auditors said notes that summed up eight hours of therapy in three or four sentences lacked a detailed statement of the services provided.

Do RBTs and BCBAs write different notes?

Yes, because they document different services. An RBT's note records the programs run, the client's responses, and behavior data under a plan the BCBA designed, and the RBT signs it. A BCBA's note records the clinical work behind the code billed, such as the protocol change made for 97155 or the caregiver coaching for 97156.