# ICD-11 Classification for Speech and Language Delay

Canonical: https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-speech-and-language-delay
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

In ICD-11-MMS, speech and language delay is classified under code 6A01 — Developmental speech or language disorders, within neurodevelopmental disorders. It encompasses speech sound disorder (6A01.0), speech fluency disorder (6A01.1) and developmental language disorder (6A01.2), distinguishing a true developmental disorder from transient variation.

*Behind a parent's worry about "late talking" sits a precise clinical question — where does speech and language delay actually sit in ICD-11?*

## In short
In ICD-11-MMS, what is colloquially called **speech and language delay** is classified under **6A01 — Developmental speech or language disorders**, within the broader grouping of neurodevelopmental disorders (6A0). The code captures persistent difficulties in acquiring, producing or understanding speech and language that begin in the developmental period and are not better accounted for by hearing loss, another sensory deficit, intellectual developmental disorder or a global delay. ICD-11 deliberately distinguishes a true developmental disorder from transient or expected variation — so "delay" is a presenting concern, while **6A01** is the diagnostic classification.

## The classification, in detail
The **6A01** block resolves into clinically meaningful subtypes, which is the practical value of ICD-11 over a single "delay" label:

- **6A01.0** Developmental speech sound disorder — difficulty with articulation/phonology beyond age expectation.
- **6A01.1** Developmental speech fluency disorder — disruption of normal fluency and timing (stuttering).
- **6A01.2** Developmental language disorder, with subtypes specifying impairment of receptive **and** expressive language, mainly expressive, mainly pragmatic, or other specified profiles.

Diagnosis requires that the difficulty falls substantially below the expected level for age, emerges in the developmental period, and produces functional limitation — and that hearing impairment and other neurological or intellectual conditions have been considered. ICD-11 sits alongside the **WHO ICF** functioning framework, so the code names the condition while functional profiling describes its day-to-day impact.

## When to refer
Refer for structured speech-language assessment rather than "watchful waiting" when there is no babble or gesture by 12 months, no single words by 16 months, no two-word phrases by 24 months, any **loss** of previously acquired words, or persistent parental concern. Always rule out hearing loss first via audiology.

## The Pinnacle way
AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from a code, a checklist or an app. Coding informs the clinical picture; it does not replace assessment. Explore how we [support speech and language development](https://www.pinnacleblooms.org/top-speech-therapy-center-india-proven-improvement-rate), [how the AbilityScore® is established](/ask/what-is-the-abilityscore-and-how-is-it-calculated), and [begin a developmental review](/).

## Trusted sources
WHO ICD-11 for Mortality and Morbidity Statistics, code 6A01 (developmental speech or language disorders); CDC developmental milestone guidance; Indian Academy of Pediatrics; American Academy of Pediatrics (HealthyChildren.org); RBSK developmental screening framework.

**Next step —** Refer or review a child with persistent speech-language concerns at a Pinnacle Blooms Network centre for structured, clinician-led assessment.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.

## Sources
- WHO ICD-11 MMS — Developmental speech or language disorders: https://icd.who.int/browse11
- CDC — Learn the Signs. Act Early. milestones: https://www.cdc.gov/child-development
- American Academy of Pediatrics — HealthyChildren.org: https://www.healthychildren.org

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Doctor: https://pinnacleblooms.org/ask/lens/stakeholder/doctor
- Communication: https://pinnacleblooms.org/ask/lens/domain/communication
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Speech Therapy: https://pinnacleblooms.org/ask/lens/route/speech-therapy
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- Speech and Language Delay (ICD-11 6A01) Defined: https://pinnacleblooms.org/ask/what-is-speech-and-language-delay-and-what-are-its-icd-11-features-in-early-childhood
- ICD-11 Classification for Developmental Language Disorder: https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-developmental-language-disorder
- What is Speech and Language Delay?: https://pinnacleblooms.org/ask/what-is-speech-and-language-delay
- What is the SNOMED CT concept for Speech and Language Delay?: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-speech-and-language-delay
- Developmental Language Disorder: ICD-11 Definition & Early Features: https://pinnacleblooms.org/ask/what-is-developmental-language-disorder-and-what-are-its-icd-11-features-in-early-childhood
- What are the types or levels of Speech and Language Delay?: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-speech-and-language-delay
- How Speech and Language Delay Affects Daily Life: https://pinnacleblooms.org/ask/how-does-speech-and-language-delay-affect-a-child-s-daily-life
- Is Speech and Language Delay considered a disability?: https://pinnacleblooms.org/ask/is-speech-and-language-delay-considered-a-disability
- Is Speech and Language Delay Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-speech-and-language-delay-genetic-or-hereditary
- What are common myths about Speech and Language Delay?: https://pinnacleblooms.org/ask/what-are-common-myths-about-speech-and-language-delay
- What causes speech and language delay in children?: https://pinnacleblooms.org/ask/what-causes-speech-and-language-delay-in-children
- Early intervention outcomes for speech and language delay under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-speech-and-language-delay-in-children-under-7

### Recognise signs & concerns
- Clinical Red Flags for Speech and Language Delay: https://pinnacleblooms.org/ask/what-clinical-red-flags-for-speech-and-language-delay-warrant-referral-in-a-young-child
- What early indicators of Speech and Language Delay should a paediatrician watch for?: https://pinnacleblooms.org/ask/what-early-indicators-of-speech-and-language-delay-should-a-paediatrician-watch-for
- When should a doctor refer a child with suspected Speech and Language Delay?: https://pinnacleblooms.org/ask/when-should-a-doctor-refer-a-child-with-suspected-speech-and-language-delay-for-developmental-therapy
- Can Speech and Language Delay Be Cured?: https://pinnacleblooms.org/ask/can-speech-and-language-delay-be-cured
- Can speech and language delay be prevented?: https://pinnacleblooms.org/ask/can-speech-and-language-delay-be-prevented
- Do boys show Speech and Language Delay differently?: https://pinnacleblooms.org/ask/do-boys-show-speech-and-language-delay-differently
- Do girls show speech and language delay differently?: https://pinnacleblooms.org/ask/do-girls-show-speech-and-language-delay-differently
- Spotting Speech and Language Delay early: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-speech-and-language-delay-early
- Early Signs of Speech and Language Delay: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-speech-and-language-delay
- Early Signs of Speech and Language Delay in a 1-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-speech-and-language-delay-in-a-1-year-old-boy
- Early Signs of Speech & Language Delay in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-speech-and-language-delay-in-a-1-year-old-girl
- Early Signs of Speech & Language Delay (12–18 Months): https://pinnacleblooms.org/ask/what-are-the-early-signs-of-speech-and-language-delay-in-a-12-to-18-month-old

### Explore causes & influences
- Contributing Factors for Speech and Language Delay: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-speech-and-language-delay-in-early-childhood
- Are boys more likely to have speech and language delay?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-speech-and-language-delay
- Are girls more likely to have a speech and language delay?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-speech-and-language-delay
- How Early Speech-Language Intervention Advances UNCRPD and the SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-speech-and-language-delay-advance-un-child-rights-uncrpd-and-the-sdgs
- What causes speech and language delay in young children?: https://pinnacleblooms.org/ask/what-causes-speech-and-language-delay-in-young-children
- Cost-effectiveness of early therapy for speech and language delay: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-speech-and-language-delay-in-young-children
- Prevalence and Public-Health Burden of Speech and Language Delay in India: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-speech-and-language-delay-among-young-children-in-india

### Understand assessment
- Recommended Screening & Diagnostic Pathway for Speech and Language Delay Under 7: https://pinnacleblooms.org/ask/what-is-the-recommended-screening-and-diagnostic-pathway-for-speech-and-language-delay-in-children-under-7
- How AbilityScore Tracks Progress in Speech and Language Delay: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-speech-and-language-delay
- How Speech and Language Delay Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-speech-and-language-delay-assessed-in-a-young-child
- What does an AbilityScore of 0–100 mean for a child with Speech and Language Delay?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-speech-and-language-delay
- What does an AbilityScore of 100–200 mean for a child with Speech and Language Delay?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-speech-and-language-delay
- What does an AbilityScore of 200–300 mean for a child with Speech and Language Delay?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-speech-and-language-delay
- What an AbilityScore of 300–400 means for speech and language delay: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-speech-and-language-delay
- What does an AbilityScore of 400–500 mean for a child with Speech and Language Delay?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-speech-and-language-delay
- What an AbilityScore® of 500–600 Means for Speech and Language Delay: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-speech-and-language-delay
- What does an AbilityScore of 600–700 mean for a child with Speech and Language Delay?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-speech-and-language-delay
- What an AbilityScore of 700–800 Means for Speech and Language Delay: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-700-800-mean-for-a-child-with-speech-and-language-delay
- AbilityScore 800–900 for Speech and Language Delay: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-800-900-mean-for-a-child-with-speech-and-language-delay

### Explore therapy & support
- Supporting a Child with Speech and Language Delay Day to Day: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-speech-and-language-delay-day-to-day
- Speech and Language Delay and Mainstream School: https://pinnacleblooms.org/ask/can-a-child-with-speech-and-language-delay-attend-a-mainstream-school
- Can a child with speech and language delay attend a regular school?: https://pinnacleblooms.org/ask/can-a-child-with-speech-and-language-delay-attend-a-regular-school
- Can a Child With Speech and Language Delay Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-speech-and-language-delay-grow-up-to-live-independently
- How a Teacher Can Help a Child with Speech and Language Delay: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-speech-and-language-delay-take-part-and-learn
- District early intervention for Speech and Language Delay under 7: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-speech-and-language-delay
- Including a Child with Speech and Language Delay in Class: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-speech-and-language-delay-in-a-mainstream-classroom
- How to Support Communication in Speech and Language Delay: https://pinnacleblooms.org/ask/how-can-we-support-communication-development-in-a-child-with-speech-and-language-delay
- How Therapy Helps a Child with Speech and Language Delay Make Progress: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-speech-and-language-delay-make-progress
- How Is Speech and Language Delay Diagnosed in a Child?: https://pinnacleblooms.org/ask/how-is-speech-and-language-delay-diagnosed-in-a-child
- How is Speech and Language Delay supported through therapy?: https://pinnacleblooms.org/ask/how-is-speech-and-language-delay-supported-through-therapy
- AbilityScore for Speech and Language Delay — what to do next: https://pinnacleblooms.org/ask/my-child-with-speech-and-language-delay-has-an-abilityscore-of-0-100-what-should-we-do-next