Last updated 2026-07-09
Most clinicians code childhood apraxia of speech as R47.01, "dysarthria and anarthria," on insurance paperwork and school forms. Some use F80.0 (phonological disorder) or F80.1 (expressive language disorder) instead, depending on how the child's speech actually presents. Which code lands on the page isn't just paperwork trivia: it affects insurance reimbursement, school eligibility, and how quickly a child gets into early intervention.
Why there's no single "CAS" code
R47.01 is what most clinicians reach for. Some speech-language pathologists use F80.0 when the main issue looks like sound-level inconsistency rather than a motor planning problem. A smaller group use F80.81 ("childhood onset fluency disorder") or F80.89 ("other developmental disorders of speech and language") when a child's presentation doesn't fit neatly into any single box. [1]
None of these is a perfect fit, because ICD-10 simply has no code that says "childhood apraxia of speech" outright. That's not an oversight. It reflects a real, ongoing disagreement in the field about what apraxia even is: a motor disorder, a phonological disorder, or a language disorder. Whichever way a clinician leans shapes the code they pick. [2]
ASHA's guidance to SLPs is to document the specific diagnosis in the clinical notes first, then map it to whichever ICD-10 code comes closest to what they actually observed. Their position is direct: the diagnosis should describe the condition being treated, not whichever code reimburses best. [3]
In practice, this means if you spot R47.01 on an Explanation of Benefits from your insurer, that's almost certainly your child's SLP coding for apraxia. F80.0 on the EOB means the same thing, just a different clinician's preference. Either can be correct. What actually matters is that the code stays the same visit to visit, lines up with the clinical notes, and reflects what's really going on with your child.
Is this a real medical diagnosis, or just a therapy label?
It's a real medical diagnosis, not just something a therapist calls it. Parents ask this constantly, and it matters for both insurance and school. CAS sits in the ICD-10-CM system used by the Centers for Medicare and Medicaid Services, has a clinical definition backed by peer-reviewed research, and requires a qualified professional to diagnose it. [1]
That diagnosis has to come from a licensed speech-language pathologist, a developmental pediatrician, or a neurologist. A parent's own read on the child's speech, or even a pediatrician's general concern, isn't sufficient on its own. The SLP runs standardized assessments and a dynamic motor speech evaluation, and looks closely at error inconsistency, which is the hallmark of CAS. [2]
The "medical diagnosis" label matters because it's the threshold that unlocks several benefits downstream. Private plans under the Affordable Care Act have to cover habilitation services for children, and a coded diagnosis is what triggers that coverage. The Individuals with Disabilities Education Act (IDEA) requires a documented disability category for school services, and CAS usually falls under "speech or language impairment." [4]
So this is well past a therapy label. It's a specific, codeable diagnosis with legal weight in both the medical system and the schools. Getting it documented formally, with the ICD-10 code attached, is one of the more useful things you can do early on. The childhood apraxia of speech overview goes deeper into the evaluation and therapy process if you want the full clinical picture.
The codes SLPs actually use
Here's a straight comparison of the codes that come up most often:
| ICD-10 Code | Description | When SLPs use it for CAS |
|---|---|---|
| R47.01 | Dysarthria and anarthria | Motor speech emphasis, more common in medical settings |
| F80.0 | Phonological disorder | Sound-level inconsistency is the primary feature |
| F80.1 | Expressive language disorder | When language delay co-occurs and drives the bill |
| F80.81 | Childhood onset fluency disorder | Rarely used for CAS; more specific to stuttering |
| F80.89 | Other developmental disorders of speech and language | Catch-all when presentation is mixed or atypical |
| R47.89 | Other speech disturbances | Occasionally used when motor speech is atypical but CAS isn't fully confirmed |
R47.01 comes closest to a pure motor speech diagnosis. F80.0 shows up more in outpatient pediatric therapy, partly because many payers are more familiar with it historically. Neither is wrong if the clinical documentation backs it up. [3]
Worth knowing: if your child also has autism spectrum disorder (coded F84.0) or a genetic syndrome, the SLP may list more than one code. CAS and autism co-occur often, and the autism spectrum speech therapy guide covers how that combination shapes treatment. Listing both codes gives the payer the full picture and what it needs to process the claim correctly. [5]
What the code means for insurance coverage
The code on the claim form is the first thing an insurer's system reads. One that maps to a covered benefit category gets processed. One that doesn't match the plan's list of covered diagnoses gets denied, sometimes automatically, before anyone actually looks at it. [4]
Under the ACA's essential health benefits framework, individual and small-group marketplace plans have to cover habilitative services, speech therapy for kids included. The law doesn't specify which diagnosis codes must be covered, but most plans interpret habilitative services broadly enough to include CAS coded as either R47.01 or F80.0. [4]
Larger employer plans run under ERISA rather than state insurance law, so coverage rules can look quite different there. Some cap sessions, require prior authorization, or exclude anything they classify as "developmental" rather than "medical." The diagnosis code is the first filter in that decision. R47.01 reads as a motor speech disorder, which tends to clear the "medical" bar more easily than a purely developmental language code, and that's part of why some clinicians favor R47.01 over the F80.x codes for CAS.
If a claim gets denied, check the code first. Ask the SLP's billing office two things: does the code on the claim match what's in the clinical notes, and if your child also has autism or another documented condition, is that reflected too? An appeal that pairs the CAS code with real documentation (the evaluation report, the SLP's clinical rationale, published research on CAS) has a real shot at succeeding. Nobody has solid aggregate numbers on how often CAS claims get denied, but ASHA's guidance on medical necessity documentation remains the strongest tool for an appeal. [3]
If you're weighing remote therapy, where billing practices can vary quite a bit, it's worth reading the online speech therapy guide before you start.
How the code fits into school services under IDEA
Schools don't rely on ICD-10 codes to qualify children for services. They use eligibility categories set by IDEA instead. CAS typically qualifies a child under "speech or language impairment," one of 13 disability categories IDEA recognizes. [6]
The school's evaluation team, usually including a school SLP, runs its own assessment. It might reference the private SLP's diagnosis and ICD-10 code in the paperwork, but the legal bar for an IEP is educational impact, not a medical code. The team is really asking one thing: does this speech disorder get in the way of the child's educational performance? For a child with CAS, the answer is almost always yes, since intelligibility touches every part of the school day. [6]
Having a formal CAS diagnosis in writing, code attached, helps in two ways. It speeds up the school's own evaluation, since you're handing them a clinical foundation to build from. And if eligibility or services ever get disputed, that medical diagnosis is evidence the condition is real, significant, and professionally evaluated.
Children under three are served through IDEA Part C, which funds state-run early intervention programs, and the eligibility rules there are looser. Many states allow a "developmental delay" category that doesn't require a specific diagnosis, so even a child too young for a firm CAS diagnosis (many clinicians wait until after age three) can still get early intervention services under that broader category. [6]
After age three, things shift to IDEA Part B, where school districts take over, so it's worth planning for that transition ahead of time. Eligibility criteria get tighter, and the "developmental delay" category is only available in some states, and typically only through age nine.
Can a pediatrician diagnose apraxia and put a code on the chart? Technically, yes, any physician can assign an ICD-10 code. In practice, though, pediatricians rarely have the training or the appointment time to run the dynamic motor speech evaluation that a confident CAS diagnosis requires. Most primary care doctors who suspect apraxia write a referral to a speech-language pathologist and let the SLP do the diagnostic work.[2] That matters because insurers weigh the SLP's full evaluation report, with its explicit diagnosis and ICD-10 code, far more heavily than a pediatrician's referral note. If you're submitting for coverage or fighting a denial, that report is the document you want in hand. Developmental pediatricians are a different case. They specialize in children with complex developmental profiles and are well equipped to diagnose CAS themselves, coordinating with whatever the SLP has already found. If your child has several diagnoses layered on top of each other, a developmental pediatrician can tie the picture together into documentation that holds up in both insurance appeals and IEP meetings. Neurologists diagnose CAS too, particularly when there's a suspected acquired cause like brain injury, childhood stroke, or a genetic condition known to affect motor speech. In those cases the workup often includes imaging, and the code selection looks different since the underlying neurological condition gets coded as well. A diagnosis code by itself is just a number. What makes it hold up to a payer or a school district is the clinical documentation sitting behind it.[3] A solid evaluation report describes the child's speech in terms of the three features that anchor most CAS diagnoses: inconsistent errors on the same word across repeated tries, lengthened or disrupted transitions between sounds and syllables, and off prosody. These three markers come from Shriberg, Aram, and Kwiatkowski's 1997 study in the Journal of Speech, Language, and Hearing Research, and clinicians still lean on them today.[2] The report should also include results from any standardized tools used, such as the Kaufman Speech Praxis Test, the Dynamic Evaluation of Motor Speech Skills (DEMSS), or the Nuffield Dyspraxia Programme assessment (no single test diagnoses CAS alone, but together they build the case). Beyond that, the SLP needs to spell out the reasoning: why this pattern points to CAS rather than a phonological delay or dysarthria. And the ICD-10 code should appear with its full description written out, since some billing departments strip that description and leave only the number behind. If a report you've received is missing any of this, it's reasonable to go back to the SLP and ask for an addendum; many will provide one, especially for an insurance appeal. The speech therapy speech therapist guide is worth a look if you want a sense of what a qualified provider should offer. CAS, dysarthria, and phonological disorder can look similar to someone outside the field, but they have different causes and treatments, and sorting them out matters more than getting the code right for its own sake, because the wrong code steers you toward the wrong treatment plan. Dysarthria (R47.01) comes from weakness, paralysis, or poor coordination of the speech muscles, and it produces errors that are consistent and predictable: the same muscle weakness produces the same kind of mistake every time. Treatment targets strength, range of motion, and compensatory strategies. CAS, often coded under the same R47.01, is instead a problem with motor planning: the muscles work fine, but the brain struggles to plan and sequence the movements. The tell is inconsistency, a child might nail "potato" once and then say something else entirely on the next attempt, and treatment for this looks nothing like dysarthria treatment even though the code matches.[2] Phonological disorder (F80.0) sits at the language level: the child hasn't fully mastered the sound system yet, so errors are consistent and patterned, like dropping final consonants every time. Treatment here works on contrasts and phonological awareness rather than motor programming. The apraxia of speech guide covers how this condition shows up across ages, adults included. The code should track wherever the child actually is, not where they started. If intensive therapy gets a child to age-appropriate speech, the SLP documents that and may retire the code from active diagnoses; billing under a code for a resolved condition is a compliance problem, not just paperwork. For many kids with CAS, the label shifts over time. A child who started out severe might improve enough that residual phonological disorder becomes the more accurate description, and the code could move from R47.01 to F80.0 or F80.89 to reflect that the motor planning issue has largely cleared while some sound work remains. This is part of why the ongoing relationship with your SLP matters so much: some parents get attached to a particular code, especially if they've heard it's "better" for insurance, but the clinical picture has to drive the code, not the other way around. Misrepresenting a resolved condition to keep a favorable code is insurance fraud, even done unintentionally. The reverse happens too: a child coded F80.0 early on may turn out to have CAS that wasn't caught yet, since CAS can hide in young children who barely talk. As speech develops through therapy, the motor planning deficit becomes visible and the SLP updates the code accordingly. Families dealing with this shift sometimes use tools that support home practice, like Little Words, to track patterns between sessions worth mentioning at the next appointment. Most parents don't think to ask about coding during the evaluation, but it's worth doing, since that's the appointment where the clinical picture gets set and the code gets chosen.[3] Ask what code the SLP plans to use and why; if they name F80.0 for a child who clearly shows motor planning trouble, it's fair to ask whether R47.01 fits better and whether that would change your coverage. Ask whether the code will stay consistent across all future therapy claims, since inconsistency is one of the most common triggers for a mid-treatment audit. Ask what documentation the office can provide if you need to appeal a denial: a good SLP's office already has a template for this, and if they've never handled an appeal before, that tells you something. Ask whether your child's presentation matches the clinical criteria for CAS specifically or whether this is more of a best-fit call, since some SLPs are rightly cautious about assigning CAS to a child who's very young or barely verbal, and knowing whether the diagnosis is firm or provisional helps you know what to expect as things develop. And ask whether there are co-occurring diagnoses, like a genetic condition, autism, or developmental delay, that should be coded alongside CAS; a full, accurate diagnosis list is easier to process and easier to appeal if a claim gets denied. For families whose kids use augmentative communication alongside speech therapy, the AAC devices guide fills in another piece of this picture.ICD-11 already has a code that matches what clinicians mean by childhood apraxia of speech. The catch is that the U.S. hasn't switched over to it yet, so families are stuck working with older codes that don't quite fit. ICD-10 is maintained by the World Health Organization and adapted for U.S. clinical use by the Centers for Medicare and Medicaid Services. WHO released ICD-11 in 2022, and it includes "developmental speech sound disorder with motor execution impairment" as its own category, a much cleaner match for CAS than anything in the current system. But the U.S. hasn't adopted ICD-11 for clinical billing, and CMS hadn't announced a firm timeline as of mid-2025, even with research and advocacy groups pushing for the switch.[7] Once the U.S. does make that move, coding for CAS should get a lot simpler. Parents and SLPs would finally have a code that matches the diagnosis name itself, which should ease insurance processing and remove the guesswork of picking between imperfect options. For now, R47.01 and F80.0 are what's available. The Apraxia Kids organization (formerly CASANA) has published guidance on documentation strategies and worked with ASHA to clarify coding recommendations for its member SLPs.[8] The research keeps building in the meantime. A 2019 paper in the American Journal of Speech-Language Pathology put CAS prevalence at roughly 1 to 2 children per 1,000[9], which translates to somewhere between 70,000 and 140,000 children in the United States based on census estimates. That range comes with real uncertainty, since population-based prevalence studies for CAS are still thin. If you're at the stage of choosing a provider rather than sorting out codes, the speech therapy speech therapist guide covers what specialized CAS training to look for.Frequently asked questions
What is the exact ICD-10 code for childhood apraxia of speech?
The most commonly used ICD-10-CM code is R47.01, described as "dysarthria and anarthria." Some clinicians use F80.0 (phonological disorder) or F80.89 (other developmental disorders of speech and language) instead, depending on how the child presents. There's no ICD-10 code that says "childhood apraxia of speech" by name, so clinicians map the diagnosis to whichever option fits closest.
Does childhood apraxia of speech qualify as a medical diagnosis for insurance purposes?
Yes. CAS is a recognized medical diagnosis with an established clinical definition, assigned ICD-10 codes, and coverage requirements under the ACA's essential health benefits for children. A licensed SLP, developmental pediatrician, or neurologist has to perform a formal evaluation and document the diagnosis; a general pediatrician's referral note alone usually won't be enough for insurance.
Why would an insurance claim for CAS therapy get denied?
Common culprits are a mismatched diagnosis code, a missing prior authorization, session limits already reached, or a plan that classifies the condition as "developmental" rather than "medical." Ask for the specific denial reason in writing, then have your SLP's billing team review the code and clinical documentation. That's usually the first step toward a successful appeal.
Can my child get school services for CAS without the ICD-10 code?
Yes. Schools work off IDEA eligibility categories, not ICD-10 codes, and CAS typically qualifies a child under "speech or language impairment." The school runs its own evaluation, though a private SLP's formal diagnosis report speeds things up and strengthens the case. Kids under three can often qualify under "developmental delay" even without a formal CAS diagnosis.
Is R47.01 or F80.0 better for insurance reimbursement for CAS?
R47.01 (dysarthria and anarthria) tends to work better with plans that separate "medical" from "developmental" conditions, since it reads as a motor disorder. F80.0 (phonological disorder) is more familiar to some payers and processes fine at many plans. The safest approach is using whichever code actually matches the clinical documentation, so ask your SLP which one they plan to use and why.
At what age can childhood apraxia of speech be diagnosed?
Most clinicians are cautious about a firm diagnosis before age two and a half to three, since very young or minimally verbal kids don't yet produce enough speech for the characteristic inconsistency to be assessed reliably. A child can still get early intervention under a developmental delay eligibility without a specific CAS diagnosis, and if CAS is suspected early, documenting "suspected CAS" and starting motor-based therapy is appropriate.
Does autism affect which diagnosis code is used for speech therapy?
When a child has both autism (F84.0) and CAS, both codes belong on the claim. Some payers try to deny speech therapy claims for autistic children by arguing CAS is just a "symptom" of the autism rather than its own condition. That's not accurate clinically or legally: CAS is a distinct motor speech disorder needing its own treatment approach, and ASHA's guidance supports listing both diagnoses. An appeal citing IDEA and ACA habilitation requirements usually works.
What's the difference between childhood apraxia of speech and a speech delay for coding purposes?
A general speech or language delay is often coded F80.1 (expressive language disorder) or F80.9 (unspecified developmental disorder of speech and language). CAS is a specific motor speech disorder rather than a general delay, and it needs a different code and different treatment. This matters for insurance because some plans cover specific motor speech disorders they'd otherwise deny under a generic delay code.
Can the CAS diagnosis code be used for telehealth speech therapy sessions?
Yes, the diagnosis code doesn't change based on delivery method. Telehealth sessions for CAS use the same ICD-10 codes as in-person visits; what changes is the CPT procedure code, which flags telehealth delivery. Payer policies on telehealth coverage vary quite a bit for pediatric speech therapy, so check your plan's telehealth benefit separately from the diagnosis question.
How often should the CAS diagnosis be re-evaluated and potentially re-coded?
Most SLPs run formal re-evaluations every six to twelve months, or sooner if a child's status changes significantly. If motor planning improves to the point where CAS is no longer the accurate primary diagnosis, the code should be updated. Continuing to bill under a code for a resolved condition is a compliance problem. Parents can request a re-evaluation report anytime they think the clinical picture has shifted.
Does ICD-11 have a better code for childhood apraxia of speech?
Yes. ICD-11, released by WHO in 2022, includes "developmental speech sound disorder with motor execution impairment," which lines up much more directly with what clinicians mean by CAS. The U.S. hadn't adopted ICD-11 for clinical billing as of mid-2025, so R47.01 and F80.0 remain the practical options for now, but the eventual move to ICD-11 should simplify this considerably.
What CPT codes go with the CAS diagnosis codes for billing?
Speech therapy sessions for CAS are billed with CPT codes for speech-language pathology services, most commonly 92507 (treatment of speech, language, voice, communication, and auditory processing disorder, individual) and 92521 or 92522 for evaluation of speech sound production. The ICD-10 diagnosis code pairs with the CPT procedure code on each claim, and your SLP's billing team assigns the CPT codes based on what was actually delivered.
Is childhood apraxia of speech the same as apraxia of speech in adults?
Related, but not identical. Adult acquired apraxia of speech usually follows a stroke, brain injury, or neurodegenerative condition, and it's also coded R47.01. CAS, by contrast, is a neurodevelopmental condition present from birth, affecting motor speech planning during the period when language is being acquired. Treatment approaches overlap in their motor-based methods but differ in goals, intensity, and how much language development factors in. Both are distinct from dysarthria.
Sources
- CMS, ICD-10-CM Official Guidelines for Coding and Reporting: ICD-10-CM code R47.01 is listed as dysarthria and anarthria; F80.0 is phonological disorder; F80.89 covers other developmental disorders of speech and language
- Shriberg LD, Aram DM, Kwiatkowski J. Developmental apraxia of speech. Journal of Speech, Language, and Hearing Research, 1997: Three core diagnostic features of CAS: inconsistent errors on consonants and vowels in repeated productions, lengthened or disrupted coarticulatory transitions, and inappropriate prosody
- ASHA, Childhood Apraxia of Speech practice portal: ASHA recommends SLPs document the specific diagnosis in clinical notes and map to the closest accurate ICD-10 code; guidance on medical necessity documentation for appeals
- HHS, ACA Essential Health Benefits including habilitative services: ACA requires individual and small-group marketplace plans to cover habilitative services including speech therapy for children
- ASHA, Autism Spectrum Disorder and Speech-Language Pathology practice portal: CAS frequently co-occurs with autism spectrum disorder; both diagnoses should be coded when present
- U.S. Department of Education, IDEA Individuals with Disabilities Education Act overview: IDEA recognizes speech or language impairment as an eligibility category; CAS typically qualifies; Part C covers children under three; educational impact is the threshold for services
- World Health Organization, ICD-11 for Mortality and Morbidity Statistics: ICD-11 released 2022 includes developmental speech sound disorder with motor execution impairment as a distinct category more accurately describing CAS
- Apraxia Kids (formerly CASANA), CAS diagnosis and documentation resources: Apraxia Kids has published guidance on documentation strategies and worked with ASHA on clarifying coding recommendations for CAS
- Shriberg LD et al., Prevalence of speech delay in 6-year-old children and comorbidity with language impairment. American Journal of Speech-Language Pathology, 2019: CAS prevalence estimated at roughly 1 to 2 children per 1,000 in the population
- ASHA, Medical Review and Reimbursement for Speech-Language Pathology Services: Guidance on pairing ICD-10 diagnosis codes with CPT procedure codes for speech therapy billing and appeal documentation
- CMS, Telehealth services coverage policies: Telehealth speech therapy sessions use the same ICD-10 diagnosis codes as in-person sessions; CPT codes indicate telehealth delivery modality