# ICD-11 Classification of Global Developmental Delay

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

In ICD-11, Global Developmental Delay sits under LD24 (Disorders of intellectual development) as a provisional descriptor for children under 5 with significant delay across multiple domains who are too young for valid standardised cognitive assessment. It is a temporary, functioning-focused placeholder that prompts early intervention and later reclassification, not a fixed diagnosis.

*When a young child is not meeting milestones across several domains at once, clinicians need the right code — and the right framing — before the picture is complete.*

## In short
In **ICD-11**, Global Developmental Delay is coded under **LD24 — Disorders of intellectual development** as the provisional category used when a child **under 5 years** shows significant delay across **multiple developmental domains** (motor, speech/language, cognition, social-adaptive) but is **too young for a valid, standardised assessment of intellectual functioning**. It is deliberately a temporary, descriptive placeholder — not a fixed diagnosis. As the child matures and reliable cognitive testing becomes feasible, the picture is reclassified, most often toward a specific disorder of intellectual development, a communication or motor disorder, or — encouragingly — resolution.

## What the classification actually means
ICD-11 frames GDD as a **functional descriptor** rather than an aetiological label. The qualifying features are:
- Age **below 5 years**
- Significant delay (conventionally performance well below expectation) in **two or more** developmental domains
- Clinical judgement that standardised intelligence testing is **not yet reliable or appropriate** for the child's age or cooperation

Under the WHO's [ICF model of functioning](https://icd.who.int/en), this keeps the emphasis on *current functioning and support needs* rather than a premature ceiling on potential. Practically, GDD signals **early intervention now**, with formal cognitive characterisation deferred — not abandoned.

## When to refer
Do not wait for a definitive diagnosis to act. Refer for multidisciplinary developmental assessment when delay is evident across domains, when there is regression at any age, or when parental concern persists. In the Indian context, this aligns with **RBSK** screening for the 4 Ds (defects at birth, deficiencies, diseases, developmental delay) and with IAP developmental surveillance at routine visits. Early therapy input drives the trajectory far more than the label does.

## The Pinnacle way
A clinical **AbilityScore®** — and any diagnosis — is established **only at a Pinnacle Blooms Network centre, by qualified clinicians**, never from an online form or an app. For a child carrying a GDD descriptor, our clinician-administered structured assessment turns scattered observations into one calibrated baseline across communication, cognition, motor, social and self-care domains, so progress is measured the same way at every review. Explore [how the AbilityScore® works](/ask/what-is-the-abilityscore-and-how-is-it-calculated), our coordinated [early intervention pathway](/early-intervention), or [start here](/).

## Trusted sources
WHO ICD-11 (Disorders of intellectual development; functioning framed via the ICF); CDC *Learn the Signs. Act Early.* milestone guidance; American Academy of Pediatrics developmental surveillance principles; RBSK developmental-delay screening (4 Ds); Indian Academy of Pediatrics.

**Next step —** Have a child under 5 with delay across more than one domain? [Refer or book a multidisciplinary developmental assessment](/early-intervention) at a Pinnacle centre.

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

## Sources
- WHO ICD-11 — Disorders of intellectual development: https://icd.who.int/en
- CDC — Learn the Signs. Act Early.: https://www.cdc.gov/child-development
- American Academy of Pediatrics — developmental surveillance: https://www.healthychildren.org

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Doctor: https://pinnacleblooms.org/ask/lens/stakeholder/doctor
- Context: https://pinnacleblooms.org/ask/lens/domain/context
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Special Education: https://pinnacleblooms.org/ask/lens/route/special-education
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- What is Global Developmental Delay, and what are its ICD-11 features in early childhood?: https://pinnacleblooms.org/ask/what-is-global-developmental-delay-and-what-are-its-icd-11-features-in-early-childhood
- ICF Functioning Domains in Global Developmental Delay: https://pinnacleblooms.org/ask/which-icf-functioning-domains-does-global-developmental-delay-affect-in-early-childhood
- Is Global Developmental Delay considered a disability?: https://pinnacleblooms.org/ask/is-global-developmental-delay-considered-a-disability
- SNOMED CT concept for Global Developmental Delay: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-global-developmental-delay
- How Does Global Developmental Delay Affect a Child's Daily Life?: https://pinnacleblooms.org/ask/how-does-global-developmental-delay-affect-a-child-s-daily-life
- Is Global Developmental Delay genetic or hereditary?: https://pinnacleblooms.org/ask/is-global-developmental-delay-genetic-or-hereditary
- What are common myths about Global Developmental Delay?: https://pinnacleblooms.org/ask/what-are-common-myths-about-global-developmental-delay
- What are the types or levels of Global Developmental Delay?: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-global-developmental-delay
- What causes Global Developmental Delay in children?: https://pinnacleblooms.org/ask/what-causes-global-developmental-delay-in-children
- Early Intervention Outcomes in Global Developmental Delay Under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-global-developmental-delay-in-children-under-7
- What is Global Developmental Delay?: https://pinnacleblooms.org/ask/what-is-global-developmental-delay
- What other conditions often occur alongside Global Developmental Delay?: https://pinnacleblooms.org/ask/what-other-conditions-often-occur-alongside-global-developmental-delay

### Recognise signs & concerns
- Clinical red flags for Global Developmental Delay warranting referral: https://pinnacleblooms.org/ask/what-clinical-red-flags-for-global-developmental-delay-warrant-referral-in-a-young-child
- What early indicators of Global Developmental Delay should a paediatrician watch for?: https://pinnacleblooms.org/ask/what-early-indicators-of-global-developmental-delay-should-a-paediatrician-watch-for
- When should a doctor refer a child with suspected Global Developmental Delay for developmental therapy?: https://pinnacleblooms.org/ask/when-should-a-doctor-refer-a-child-with-suspected-global-developmental-delay-for-developmental-therapy
- Can Global Developmental Delay be cured?: https://pinnacleblooms.org/ask/can-global-developmental-delay-be-cured
- Can Global Developmental Delay be prevented?: https://pinnacleblooms.org/ask/can-global-developmental-delay-be-prevented
- Do boys show Global Developmental Delay differently?: https://pinnacleblooms.org/ask/do-boys-show-global-developmental-delay-differently
- Do girls show Global Developmental Delay differently?: https://pinnacleblooms.org/ask/do-girls-show-global-developmental-delay-differently
- How frontline health workers spot Global Developmental Delay early: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-global-developmental-delay-early
- What are the early signs of Global Developmental Delay?: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-global-developmental-delay
- Early Signs of Global Developmental Delay in a 1-Year-Old Boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-global-developmental-delay-in-a-1-year-old-boy
- Early Signs of Global Developmental Delay in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-global-developmental-delay-in-a-1-year-old-girl
- Early signs of Global Developmental Delay at 12–18 months: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-global-developmental-delay-in-a-12-to-18-month-old

### Explore causes & influences
- Contributing factors for Global Developmental Delay: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-global-developmental-delay-in-early-childhood
- Are boys more likely to have Global Developmental Delay?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-global-developmental-delay
- Are girls more likely to have Global Developmental Delay?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-global-developmental-delay
- Early Intervention for GDD: Advancing Child Rights and the SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-global-developmental-delay-advance-un-child-rights-uncrpd-and-the-sdgs
- What Causes Global Developmental Delay in Young Children?: https://pinnacleblooms.org/ask/what-causes-global-developmental-delay-in-young-children
- Cost-effectiveness of early therapy for Global Developmental Delay: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-global-developmental-delay-in-young-children
- Global Developmental Delay in India: prevalence and public-health burden: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-global-developmental-delay-among-young-children-in-india

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

### Explore therapy & support
- How Global Developmental Delay Is Diagnosed: https://pinnacleblooms.org/ask/how-is-global-developmental-delay-diagnosed-in-a-child
- Which ICHI health interventions apply to Global Developmental Delay?: https://pinnacleblooms.org/ask/which-ichi-health-interventions-apply-to-global-developmental-delay-in-young-children
- How caregivers can support a child with Global Developmental Delay: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-global-developmental-delay-day-to-day
- Can a Child with Global Developmental Delay Attend Mainstream School?: https://pinnacleblooms.org/ask/can-a-child-with-global-developmental-delay-attend-a-mainstream-school
- Global Developmental Delay and Regular School: https://pinnacleblooms.org/ask/can-a-child-with-global-developmental-delay-attend-a-regular-school
- Can a Child With Global Developmental Delay Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-global-developmental-delay-grow-up-to-live-independently
- How a classroom teacher can help a child with Global Developmental Delay learn: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-global-developmental-delay-take-part-and-learn
- District early intervention for Global Developmental Delay: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-global-developmental-delay
- How a Teacher Can Include a Child with Global Developmental Delay: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-global-developmental-delay-in-a-mainstream-classroom
- How does therapy help a child with Global Developmental Delay make progress?: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-global-developmental-delay-make-progress
- How Global Developmental Delay Is Supported Through Therapy: https://pinnacleblooms.org/ask/how-is-global-developmental-delay-supported-through-therapy
- GDD and an AbilityScore: what to do next: https://pinnacleblooms.org/ask/my-child-with-global-developmental-delay-has-an-abilityscore-of-0-100-what-should-we-do-next