Last updated 2026-07-09
TL;DR
At 18 months, most children say 10 to 20 words and point to show you things. If your child says fewer than 10 words or isn't responding to their name, ask your pediatrician for a speech-language evaluation now. Early intervention (free under IDEA Part C for kids under 3) can start within weeks and changes outcomes.
What should an 18-month-old be able to say?
The American Academy of Pediatrics uses 10 words as the floor at 18 months. Some well-regarded checklists, including those from ASHA, set the range at 10 to 20 words. The words don't have to be perfect adult pronunciations. "Ba" for bottle, "da" for dog, or "muh" for more all count, as long as the child uses them consistently and on purpose. [1][2]
Beyond words, expect a typically developing 18-month-old to point to at least one body part when asked, to follow simple one-step directions like "get your shoe," and to use gestures like pointing, waving, or reaching to communicate. Those gestures matter enormously. A child who points and waves but has a small spoken vocabulary is in a very different place than a child who neither gestures nor speaks.
Comprehension is half the picture. Kids this age understand far more than they say. If your child looks up when you say their name, responds to "no," and can find a familiar object in the room, their receptive language is tracking. When comprehension lags alongside expressive language, that's a stronger signal to move quickly.
One more thing: any loss of language is a red flag at any age. If your 18-month-old had five words and now seems to have fewer, call your pediatrician today, not at the next well-visit. [1]
What counts as a speech delay in an 18-month-old?
The clinical threshold most pediatricians use is fewer than 10 words at 18 months. That number comes directly from AAP well-child visit guidance for the 18-month appointment, which calls for developmental screening. [1]
But "speech delay" isn't one thing. Speech-language pathologists separate expressive delay (trouble getting words out), receptive delay (trouble understanding language), and delays in social communication (using language to connect with other people). A child can have any combination, and the treatment looks different depending on the profile.
About 10 to 15 percent of 2-year-olds are considered late talkers, meaning they have expressive delay without other developmental concerns. [3] Some of them catch up on their own by age 3, a group researchers call "late bloomers." But there's no reliable way to predict, at 18 months, which child will bloom and which won't. Waiting to find out costs time you can't get back. The research keeps showing that children who start speech therapy earlier make faster progress, and that early gains hold. [4]
Speech delay at 18 months can also be an early sign of autism spectrum disorder. The AAP recommends autism-specific screening at 18 and 24 months using validated tools like the M-CHAT-R/F. [1] If there's any concern, ask for that screen at the same appointment you request the speech evaluation. See our overview of autism spectrum speech therapy for more on what that path looks like.
The same question applies to 16-month-olds: a speech delay in a 16 month old follows the same evaluation framework, just two months earlier on the milestone curve. If you're worried at 16 months, that concern is worth raising now, not at the 18-month visit.
How does early intervention work for speech delays under age 3?
In the United States, the Individuals with Disabilities Education Act (IDEA) Part C guarantees free evaluations and services for children under 3 who have developmental delays, including speech and language delays. This isn't means-tested. Income doesn't matter. [5]
Here's the process. You or your child's doctor contacts your state's early intervention program. Every state has one, and you can find yours through the CDC or by asking your pediatrician. A team evaluates your child, usually within 45 days of referral, and if they qualify, an Individualized Family Service Plan (IFSP) is written. Services then begin, often in your home.
Under Part C, the evaluation and the IFSP development are free. Families may be charged on a sliding-fee basis for the therapy itself depending on the state, though many states provide it at no cost. The federal statute says early intervention services must be provided "to the maximum extent appropriate" in natural environments, meaning your living room counts. [5]
Private speech therapy is the other route, especially once a child turns 3 and transitions out of Part C (at which point IDEA Part B covers school-age services). Private SLP rates run from about $100 to $300 per session depending on location and setting. Insurance coverage varies, and many families pay a mix of insurance and out of pocket. [6]
For families who can't get in-person services quickly, online speech therapy has grown fast and has solid evidence for toddler-age work, especially parent coaching models. See also our full guide to early intervention speech and language therapy for a step-by-step look at the Part C process.
What does speech therapy actually look like for an 18-month-old?
Toddler speech therapy doesn't look like sitting at a table doing drills. At 18 months, everything happens through play. An SLP might roll a ball back and forth to build turn-taking, follow the child's gaze to model words for whatever they're looking at, or use bubbles as motivation to get a child to say "more" or "go." The technical name for the dominant approach is naturalistic developmental behavioral intervention, and it has a growing evidence base. [4]
Parent coaching is central. The best models for toddlers teach parents to fold language into the daily routines that already happen: bath time, snack, getting dressed, the car ride. A good SLP spends as much session time talking to you as interacting with your child, because you're there for the other 160-plus waking hours each week when the therapist isn't.
A few specific techniques you'll hear about. Parallel talk means narrating what your child is doing ("you're pushing the car"). Self-talk means narrating what you're doing ("I'm pouring the water"). Expansion means taking what the child said and adding one word: child says "ball," you say "red ball" or "roll ball." None of these need a therapy setting. You can start all of them today.
Therapy frequency varies. Early intervention programs often start with one or two visits per week. Private outpatient therapy follows a similar cadence. Progress is usually reassessed every three to six months, and the IFSP or treatment plan is adjusted from there.
One thing worth knowing: there's no single right approach for every child. The SLP should be reading your specific child's profile and adjusting, not running the same protocol regardless of response. Ask questions. Ask what they're targeting and why. A good clinician welcomes that. Our broader overview of speech therapy for kids walks through what a full evaluation looks like.
When should I ask for a speech evaluation instead of wait and see?
Ask now, not later, if any of these are true at 18 months: your child uses fewer than 10 words consistently, they've lost words they used to have, they aren't pointing or responding to their name, they don't seem to understand simple directions, or your gut is telling you something is off. [1][2]
Pediatricians sometimes say "let's wait until 2." That can be fine in low-concern cases, but the cost of waiting is real. A child evaluated at 18 months and enrolled in early intervention by 20 months gets several months of service before their second birthday that a wait-and-see child misses entirely. Part C services end at 3. Every month lost is a month you won't get back.
You do not need a pediatrician's referral to contact your state's early intervention program directly. Any parent can call and request an evaluation. The call is free. The evaluation is free. At worst, you learn your child is on track and feel reassured. That's a good outcome. [5]
Outside the U.S., the principle holds: earlier referral to a speech-language pathologist leads to earlier support. In the UK, health visitors can make referrals, and many areas have self-referral pathways to NHS speech and language therapy. In Canada, referral routes vary by province, but most have publicly funded early intervention options.
If you're facing an autism evaluation at the same time, or wondering whether an AAC device might help, our speech delay ICD-10 coding page explains how diagnoses are documented, which affects insurance approvals for therapy.
What can parents do at home to support speech development?
The most evidence-backed thing you can do at home is talk to your child constantly, but in a specific way. Use short sentences of two to three words, just above whatever your child is currently producing. If they're producing no words, speak in single words: "ball," "more," "up." If they're saying one word, model two-word combinations. SLPs call this "one word above," and it's the simplest and most consistently supported home strategy in the literature. [4]
Read together. The National Institute on Deafness and Other Communication Disorders notes that reading aloud to children, even very young ones, supports vocabulary development. The type of reading matters. Dialogic reading, where you stop, point, and ask "what's that?" instead of reading straight through, beats passive read-aloud. [7] Board books work great at this age because they hold up to the inevitable chewing.
Cut background screen time. The AAP recommends no screen media for children under 18 months except video chat. At 18 months, some high-quality programming can come in, but only when an adult is watching with the child and talking about what they see. Background TV is consistently tied to less parent-child talk, which matters a lot at this age. [1]
Sing. Songs with repetitive, simple words and gestures (think "Wheels on the Bus") give kids predictable language to lean on and a fun reason to try vocalizing. The rhythm helps too.
Build in reasons to communicate. Don't anticipate every need. If your child always gets a snack without asking, try pausing and waiting. Look expectant. Give them a chance to point, gesture, or attempt a word. That slight communicative pressure, without frustration, is one of the most practical things you can do between therapy sessions.
How do I find a qualified speech-language pathologist for my toddler?
Look for the CCC-SLP credential: Certificate of Clinical Competence from ASHA. That credential requires at least a master's degree, a supervised clinical fellowship, and passing a national exam. [2] It's the baseline you want, and in most U.S. states it's required for independent practice.
For toddlers specifically, ask whether the SLP has experience with children under 3, and what their approach is for that age group. Pediatric SLPs who work mostly with school-age kids use different techniques than those who specialize in early communication. It's fine to ask directly.
Through early intervention, SLPs are assigned as part of the IFSP team. You can request a specific provider or request a different one if the match isn't working. Your IFSP spells out your rights.
For private therapy, ASHA has a "Find a Professional" directory at asha.org. Hospital-based outpatient programs are another strong option because they often have SLPs who specialize in developmental and medical complexity.
If in-person access is a barrier, telehealth with a licensed SLP is now widely available and reimbursed by Medicaid and many private insurers. The parent-coaching model translates well to video, and several randomized trials support telehealth SLP services for toddlers. Our online speech therapy article covers what to look for in a telehealth provider.
See our guide to finding a speech therapy speech therapist for a deeper look at credentials, questions to ask, and red flags.
When is Speech Therapy Month, and how can it help you get resources?
May is Better Hearing and Speech Month (BHSM), recognized annually by ASHA since 1927. [2] During May, ASHA and its member SLPs run free screenings, public awareness campaigns, and community events. If your child's 18-month visit falls near May, or if you've been on a wait list and it's getting close, that month is a good time to hunt for free screening events in your community.
ASHA's website posts resources and local event listings each May. State speech-language-hearing associations often run their own screenings and informational events during BHSM. It's one concrete way the annual awareness month turns into something useful for families, more than professionals.
Outside of May, many hospitals and university training clinics offer free or reduced-cost screenings year-round. University programs supervised by licensed SLPs are often much cheaper than private practice and can be high quality precisely because supervisors are watching closely.
What if my child also shows signs of autism or another developmental difference?
Speech delay and autism often show up together. About 30 to 40 percent of autistic people are minimally verbal or nonverbal, and even those who develop functional speech often need support with the social use of language, called pragmatics. [8] This doesn't mean every child with a speech delay has autism, but it does mean the evaluation should look at the full developmental picture.
AAP recommends autism-specific screening at the 18-month and 24-month well-child visits using the M-CHAT-R/F (Modified Checklist for Autism in Toddlers, Revised with Follow-Up). If your pediatrician hasn't done this at 18 months, ask for it. It's a validated screening tool, not a diagnosis. A positive screen leads to fuller evaluation. [1]
For children with autism, speech therapy at 18 months looks similar in its naturalistic play-based approaches, but may also bring in augmentative and alternative communication (AAC) tools earlier and more deliberately. The evidence on AAC is clear: it does not reduce speech development and often supports it. [9] See our detailed resource on alternative augmentative communication devices for autism and our overview of autism spectrum speech therapy for more.
For families who want a tool to support practice at home during the wait for evaluation, Little Words is an AI speech companion designed for neurodivergent kids that parents can use between therapy sessions. It's not a replacement for an SLP, but it gives families a structured way to practice language in the daily routines that matter most. You can start a quiz to see if it fits your child's needs.
What does the research say about outcomes for treated vs. untreated speech delays?
The honest answer is that the research is harder to read than you'd hope, because randomized controlled trials that leave children untreated as a control group raise obvious ethical problems. The best available evidence comes from observational studies and comparison groups.
A 2018 Cochrane review on early intervention for language delay in children under 5 found that speech-language therapy for late talkers aged 2 to 3 produced meaningful gains in expressive vocabulary compared to watchful waiting. [4] The gains were clearest for expressive language specifically, and the reviewers noted that many studies had methodological limits. That's honest. The field doesn't have perfect data.
What is consistent across studies: children who get more input, more responsive back-and-forth, and earlier intervention generally do better. The mechanism isn't mysterious. Language development is experience-dependent, and the brain is most plastic in the first three years of life. The question isn't whether to intervene. It's how fast you can start.
Long-term outcomes for late talkers who don't get help are also concerning. A longitudinal study led by Leslie Rescorla found that children with early language delays had weaker language and reading-related skills years later, into adolescence. [10] Language in the first three years feeds literacy in ways that are hard to remediate later.
For context on what speech delay means across the broader developmental picture, see our parent overview, and for adults wondering about their own history, our speech therapy for adults page addresses late-identified speech and language differences.
How much does speech therapy for an 18-month-old cost?
Cost depends heavily on the route you take. Early intervention under IDEA Part C is free for the evaluation. Therapy sessions may be free or offered on a sliding scale depending on your state, and families with private insurance are often billed through insurance first. [5]
Private outpatient speech therapy without insurance runs roughly $100 to $300 per session depending on the region, with urban centers at the higher end. Many private practices take major commercial insurance and Medicaid, though prior authorization for toddler speech therapy varies by plan. [6]
University training clinics offer services at much lower rates, typically $20 to $60 per session, and the quality is closely supervised. Hospital-based outpatient programs bill insurance and often have SLPs with strong pediatric experience.
Telehealth SLP services have become easier to access and generally sit in the same cost range as in-person care, though some telehealth platforms use subscription models that can lower the per-session cost for families paying out of pocket.
The table below sums up typical cost ranges by setting. [6][5]
| Setting | Typical cost per session | Insurance coverage |
|---|---|---|
| Early intervention (Part C) | $0 to sliding scale | Billed to insurance first; state covers gap |
| Private outpatient SLP | $100 to $300 | Varies by plan; usually requires authorization |
| University clinic | $20 to $60 | Often limited; check individually |
| Telehealth SLP | $80 to $250 | Medicaid and many commercial plans now cover |
| Hospital outpatient | $150 to $350 (billed rate) | Usually covered with referral and auth |
For a deeper look at what therapy involves and who delivers it, see our overview of pediatric speech therapy.
Frequently asked questions
My 18-month-old says no words at all. What should I do right now?
Call your pediatrician today and say specifically: "My child has no words at 18 months and I want a speech-language evaluation and an autism screening." At the same time, contact your state's early intervention program directly; you don't need a referral. Zero words at 18 months is below the clinical threshold and warrants prompt evaluation, not a wait-and-see approach. The evaluation is free under IDEA Part C.
When is Speech Therapy Month?
May is Better Hearing and Speech Month, recognized annually by ASHA since 1927. During May, ASHA member SLPs and state associations often hold free community screenings and awareness events. If you've been waiting for a low-cost screening, May is a good time to look for local events through ASHA's website or your state's speech-language-hearing association.
Does speech delay at 18 months always mean autism?
No. Speech delay at 18 months has many possible causes including late talking without other concerns, hearing loss, motor speech differences, or environmental factors. Autism is one possible explanation, but only one. The AAP recommends autism-specific screening at 18 months using the M-CHAT-R/F alongside a speech evaluation. A positive screen leads to further evaluation; it's not a diagnosis on its own.
Can I do speech therapy at home without a professional?
You can't replicate what a trained SLP does, but you can do a lot. Parent-implemented strategies like parallel talk, expansion, and responsive reading are evidence-backed and free. The best outcomes happen when a therapist guides the parent on specific techniques and the parent practices them daily. Home strategies supplement professional therapy; they're not a substitute when there's a real delay.
How long does it take to see progress in speech therapy for a toddler?
It varies a lot by the child, the severity of the delay, and how much practice happens outside sessions. Many families notice more communication attempts within four to eight weeks of consistent therapy. Meaningful vocabulary growth often shows up over three to six months. Progress is tracked through updated assessments, and treatment plans are adjusted if a child isn't responding to the current approach.
What is the difference between a speech delay and a language delay?
Speech refers to the physical production of sounds. Language refers to the system of words and grammar used to communicate. A speech delay means difficulty producing sounds clearly. A language delay means limited vocabulary, difficulty understanding, or trouble combining words. Most toddlers flagged at 18 months have a language delay (expressive, receptive, or both) rather than a pure speech sound disorder, though both can coexist.
Will my 18-month-old outgrow a speech delay on their own?
Some late talkers, roughly half by some estimates, do catch up by age 3 without formal therapy. But there's no reliable way to predict which children will catch up and which won't. Children who don't catch up are at higher risk for reading difficulties later. Given that early intervention is free and effective, waiting to see if a child outgrows it is a gamble on months of development. Most specialists recommend evaluating rather than waiting.
Does bilingualism cause speech delay in toddlers?
No. Bilingual children may spread their words across two languages, so the English-only count looks smaller, but their total vocabulary across both languages is typically on par with monolingual peers. Bilingualism does not cause speech or language delays. If a bilingual child is significantly behind in both languages, that warrants evaluation. A good SLP will assess in all languages the child is exposed to.
At what age is it too late to start speech therapy?
It's never too late, though earlier is better for developmental speech and language delays. The brain's plasticity is highest in the first three years, which is why early intervention before age 3 matters so much. But children, adolescents, and adults all benefit from speech therapy for various conditions. If your older child was never evaluated and you have concerns, an evaluation at any age is worthwhile.
Can screen time cause a speech delay in an 18-month-old?
Heavy background TV and solo screen use are consistently tied to less parent-child talk, which does affect language development. The AAP recommends avoiding screen media for children under 18 months except video chat. It's not that screens directly damage language; it's that passive screen time replaces the back-and-forth conversation that builds it. Co-viewing with an engaged adult narrows the gap significantly.
What questions should I ask at my 18-month well-child visit?
Ask your pediatrician to document how many words your child says, whether they completed a validated developmental screening, and whether they'll do the M-CHAT-R/F autism screen. If there's any concern, ask for a referral to a speech-language pathologist and ask how to contact your state's early intervention program. Don't leave without a clear plan if your gut says something is off.
Does health insurance cover speech therapy for an 18-month-old?
Most private insurance plans and Medicaid cover speech therapy when there's a documented diagnosis or delay. Coverage details vary: some plans require prior authorization, limit the number of sessions per year, or require a physician referral. Under IDEA Part C, early intervention services are billed to insurance first and the state covers any remaining cost. Always call your insurance before starting private therapy to understand your benefits.
What is a speech delay ICD-10 code and why does it matter?
ICD-10 codes are the diagnostic codes that insurers and healthcare systems use to classify conditions. Speech and language delays in young children fall under codes like F80.1 (expressive language disorder) or F80.9 (developmental disorder of speech and language, unspecified). These codes justify insurance coverage for therapy. Your child's SLP or physician assigns the appropriate code after evaluation.
Is there a difference between speech delay in a 16-month-old and an 18-month-old?
The formal clinical threshold for evaluation is typically set at 18 months because that's when the AAP schedules a developmental screening. But if you're concerned at 16 months, that's a perfectly valid time to raise it with your pediatrician or contact early intervention directly. Earlier referral means earlier support. There's no rule that you have to wait for the 18-month visit to ask.
Sources
- American Academy of Pediatrics, Bright Futures Developmental Surveillance and Screening guidelines: AAP threshold of 10 words at 18 months, autism screening at 18 and 24 months with M-CHAT-R/F, screen time guidance for under 18 months, and any loss of language as a red flag
- American Speech-Language-Hearing Association (ASHA), Better Hearing and Speech Month and CCC-SLP certification: ASHA recognition of May as Better Hearing and Speech Month since 1927, and CCC-SLP credential requirements
- NIDCD, National Institute on Deafness and Other Communication Disorders, Statistics on Voice, Speech, and Language: Approximately 10 to 15 percent of 2-year-olds are considered late talkers with expressive delay
- Cochrane Database of Systematic Reviews, reviews on speech and language therapy for children with primary speech and language delay or disorder: Speech-language therapy for late talkers aged 2 to 3 produced meaningful gains in expressive vocabulary compared to watchful waiting; parent-implemented naturalistic approaches are evidence-backed
- U.S. Department of Education, IDEA Part C Early Intervention Program for Infants and Toddlers with Disabilities: IDEA Part C guarantees free evaluations and services for children under 3 with developmental delays; evaluations must occur within 45 days of referral; services provided in natural environments
- ASHA, Health Plan Coverage of Speech-Language Pathology Services: Private outpatient SLP rates and insurance coverage variability for speech therapy sessions
- NIDCD, National Institute on Deafness and Other Communication Disorders, Your Baby's Hearing and Communicative Development Checklist: Reading aloud to children supports vocabulary development; dialogic reading is more effective than passive read-aloud
- CDC, Data and Statistics on Autism Spectrum Disorder: A significant proportion of autistic individuals are minimally verbal or nonverbal and require AAC support
- ASHA, Augmentative and Alternative Communication (AAC) evidence summaries: AAC does not reduce speech development and often supports it; evidence-based position on early AAC introduction
- Rescorla, L. (2009). Age 17 language and reading outcomes in late-talking toddlers. Journal of Speech, Language, and Hearing Research, 52(1), 16-30. (Longitudinal data on late talkers and literacy outcomes): Children with early language delays showed weaker language and reading-related skills into adolescence; longitudinal data on late talker outcomes
- ASHA, Speech Sound Disorders: Articulation and Phonology practice portal: 18-month expressive language norms of 10 to 20 words and the distinction between speech and language delays
- CDC, Learn the Signs. Act Early. Developmental milestones for 18 months: 18-month developmental milestones including pointing, following one-step directions, and word use