# ICD-11 Classification of Dyscalculia (6A03.2)

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

In ICD-11-MMS, Dyscalculia is coded 6A03.2 — Developmental learning disorder with impairment in mathematics — under the parent category 6A03 within neurodevelopmental disorders. It denotes persistent, significant difficulty acquiring mathematical skills not explained by intellectual disability, sensory or neurological impairment, or inadequate schooling.

*A child who struggles to grasp number sense or master arithmetic isn't lazy or inattentive — they may be presenting with a specific, recognised learning difference.*

## In short
In **ICD-11-MMS**, Dyscalculia is classified as **6A03.2 — Developmental learning disorder with impairment in mathematics**, sitting under the parent category *6A03 Developmental learning disorder* within neurodevelopmental disorders. It denotes significant and persistent difficulties acquiring mathematical skills — number sense, memorisation of arithmetic facts, accurate calculation and fluent reasoning — that fall substantially below expectation for chronological age and are not better accounted for by intellectual disability, sensory impairment, neurological disorder, inadequate schooling or lack of access to instruction.

## The clinical picture
The 6A03.2 specifier applies when mathematical attainment is markedly below the level expected, persists despite appropriate intervention, and materially affects academic, occupational or daily functioning. Onset is during the developmental period, though impairment may only become evident once mathematical demands exceed the individual's capacity. Common presentations include:

- Poor sense of number magnitude and difficulty with subitising or estimation
- Persistent reliance on counting strategies and weak retrieval of arithmetic facts
- Errors in calculation procedures and multi-step mathematical reasoning
- Difficulty with the mathematical and quantitative aspects of everyday tasks

Dyscalculia frequently co-occurs with developmental learning disorder with impairment in reading (6A03.0) and with ADHD, so a structured, multi-domain profile is preferable to a single-skill snapshot.

## When to refer
Consider formal assessment when mathematical difficulties are disproportionate to overall ability, persist across at least several months of targeted support, and cannot be explained by schooling gaps or another condition. Differentiate from acquired acalculia (neurological) and from global delay before assigning the developmental specifier.

## The Pinnacle way
A clinical AbilityScore® and any formal diagnosis are established **only at a Pinnacle Blooms Network centre, under qualified clinician care** — never from an online form. Our structured, clinician-administered assessment profiles cognition and learning alongside communication and attention, so a mathematics impairment is read in context rather than isolation. Explore our approach to [learning and developmental support](/), [special education and learning therapy](/special-education), and [how the AbilityScore is formed](/ask/what-is-the-abilityscore-and-how-is-it-calculated).

## Trusted sources
WHO ICD-11 for Mortality and Morbidity Statistics, category 6A03 Developmental learning disorder; WHO ICF framework of functioning.

**Next step —** For a child showing persistent maths difficulties, [arrange a structured developmental assessment with a Pinnacle clinician](/special-education).

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

## Sources
- WHO ICD-11 — Developmental learning disorder (6A03): https://icd.who.int/
- WHO ICF framework of functioning: https://www.who.int/standards/classifications/frequently-asked-questions/international-classification-of-functioning-disability-and-health

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Doctor: https://pinnacleblooms.org/ask/lens/stakeholder/doctor
- Cognitive: https://pinnacleblooms.org/ask/lens/domain/cognitive
- 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
- Dyscalculia (Mathematics Impairment): ICD-11 6A03.2 in early childhood: https://pinnacleblooms.org/ask/what-is-dyscalculia-mathematics-impairment-and-what-are-its-icd-11-features-in-early-childhood
- What is Dyscalculia (Mathematics Impairment)?: https://pinnacleblooms.org/ask/what-is-dyscalculia-mathematics-impairment
- What are the types or levels of Dyscalculia?: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-dyscalculia-mathematics-impairment
- Dyscalculia across ICF functioning domains in early childhood: https://pinnacleblooms.org/ask/which-icf-functioning-domains-does-dyscalculia-mathematics-impairment-affect-in-early-childhood
- SNOMED CT Concept for Dyscalculia (Mathematics Impairment): https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-dyscalculia-mathematics-impairment
- How Dyscalculia Affects a Child's Daily Life: https://pinnacleblooms.org/ask/how-does-dyscalculia-mathematics-impairment-affect-a-child-s-daily-life
- Is Dyscalculia Considered a Disability?: https://pinnacleblooms.org/ask/is-dyscalculia-mathematics-impairment-considered-a-disability
- Is Dyscalculia Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-dyscalculia-mathematics-impairment-genetic-or-hereditary
- What are common myths about Dyscalculia?: https://pinnacleblooms.org/ask/what-are-common-myths-about-dyscalculia-mathematics-impairment
- What causes dyscalculia in children?: https://pinnacleblooms.org/ask/what-causes-dyscalculia-mathematics-impairment-in-children
- Early Intervention Outcomes for Dyscalculia Under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-dyscalculia-mathematics-impairment-in-children-under-7
- Dyscalculia (Mathematics Impairment) in Early Childhood: https://pinnacleblooms.org/ask/what-is-dyscalculia-mathematics-impairment-and-what-does-it-look-like-in-early-childhood

### Recognise signs & concerns
- Dyscalculia: clinical red flags for referral in young children: https://pinnacleblooms.org/ask/what-clinical-red-flags-for-dyscalculia-mathematics-impairment-warrant-referral-in-a-young-child
- Early indicators of dyscalculia for paediatricians: https://pinnacleblooms.org/ask/what-early-indicators-of-dyscalculia-mathematics-impairment-should-a-paediatrician-watch-for
- When to refer suspected dyscalculia for developmental therapy: https://pinnacleblooms.org/ask/when-should-a-doctor-refer-a-child-with-suspected-dyscalculia-mathematics-impairment-for-developmental-therapy
- Can Dyscalculia Be Cured?: https://pinnacleblooms.org/ask/can-dyscalculia-mathematics-impairment-be-cured
- Can Dyscalculia Be Prevented?: https://pinnacleblooms.org/ask/can-dyscalculia-mathematics-impairment-be-prevented
- Do boys show Dyscalculia differently?: https://pinnacleblooms.org/ask/do-boys-show-dyscalculia-mathematics-impairment-differently
- Do girls show dyscalculia differently?: https://pinnacleblooms.org/ask/do-girls-show-dyscalculia-mathematics-impairment-differently
- How a Frontline Health Worker Can Spot Possible Dyscalculia Early: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-dyscalculia-mathematics-impairment-early
- Should I be worried my child might have dyscalculia?: https://pinnacleblooms.org/ask/should-i-be-worried-my-child-might-have-dyscalculia-mathematics-impairment
- Early Signs of Dyscalculia (Mathematics Impairment): https://pinnacleblooms.org/ask/what-are-the-early-signs-of-dyscalculia-mathematics-impairment
- Early signs of dyscalculia in a 1-year-old boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-dyscalculia-mathematics-impairment-in-a-1-year-old-boy
- Early Signs of Dyscalculia in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-dyscalculia-mathematics-impairment-in-a-1-year-old-girl

### Explore causes & influences
- Contributing Factors for Dyscalculia in Early Childhood: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-dyscalculia-mathematics-impairment-in-early-childhood
- How Dyscalculia Affects a Child's Cognitive Development: https://pinnacleblooms.org/ask/how-does-dyscalculia-mathematics-impairment-affect-a-child-s-cognitive-development
- Are boys more likely to have dyscalculia?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-dyscalculia-mathematics-impairment
- Are girls more likely to have dyscalculia?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-dyscalculia-mathematics-impairment
- Early Intervention for Dyscalculia: Advancing UNCRPD & the SDGs: https://pinnacleblooms.org/ask/how-does-early-intervention-for-dyscalculia-mathematics-impairment-advance-un-child-rights-uncrpd-and-the-sdgs
- What Causes Dyscalculia in Young Children?: https://pinnacleblooms.org/ask/what-causes-dyscalculia-mathematics-impairment-in-young-children
- Cost-Effectiveness of Early Therapy for Dyscalculia: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-dyscalculia-mathematics-impairment-in-young-children
- Dyscalculia in India: Prevalence and Public-Health Burden: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-dyscalculia-mathematics-impairment-among-young-children-in-india

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

### Explore therapy & support
- How Caregivers Can Support a Child with Dyscalculia: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-dyscalculia-mathematics-impairment-day-to-day
- Can a Child with Dyscalculia Attend a Mainstream School?: https://pinnacleblooms.org/ask/can-a-child-with-dyscalculia-mathematics-impairment-attend-a-mainstream-school
- Can a Child with Dyscalculia Attend a Regular School?: https://pinnacleblooms.org/ask/can-a-child-with-dyscalculia-mathematics-impairment-attend-a-regular-school
- Can a Child With Dyscalculia Live Independently?: https://pinnacleblooms.org/ask/can-a-child-with-dyscalculia-mathematics-impairment-grow-up-to-live-independently
- How a Teacher Can Help a Child with Dyscalculia: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-dyscalculia-mathematics-impairment-take-part-and-learn
- Dyscalculia early intervention for under-7s: a district pathway: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-dyscalculia-mathematics-impairment
- How a teacher can include and support a child with dyscalculia: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-dyscalculia-mathematics-impairment-in-a-mainstream-classroom
- How to Support Cognitive Development in a Child with Dyscalculia: https://pinnacleblooms.org/ask/how-can-we-support-cognitive-development-in-a-child-with-dyscalculia-mathematics-impairment
- How therapy helps a child with dyscalculia make progress: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-dyscalculia-mathematics-impairment-make-progress
- How Dyscalculia Is Diagnosed in a Child: https://pinnacleblooms.org/ask/how-is-dyscalculia-mathematics-impairment-diagnosed-in-a-child
- How is Dyscalculia supported through therapy?: https://pinnacleblooms.org/ask/how-is-dyscalculia-mathematics-impairment-supported-through-therapy
- Dyscalculia AbilityScore — What to Do Next: https://pinnacleblooms.org/ask/my-child-with-dyscalculia-mathematics-impairment-has-an-abilityscore-of-0-100-what-should-we-do-next

### At home & in everyday life
- How can I support my child with Dyscalculia at home?: https://pinnacleblooms.org/ask/how-can-i-support-my-child-with-dyscalculia-mathematics-impairment-at-home