SNOMED CT concept for Dyslexia (Reading Impairment)

Coding dyslexia correctly across SNOMED CT and ICD-11 is what keeps a child's reading-impairment record interoperable from referral to therapy plan.

In short

In SNOMED CT, Dyslexia (developmental reading impairment) maps to the clinical finding concept 84229001 — Dyslexia (disorder), with the closely related developmental dyslexia captured under concept 192352006. This corresponds to ICD-11 code 6A03.0 — Developmental learning disorder with impairment in reading, the contemporary classification for a specific, persistent difficulty acquiring reading accuracy and fluency despite adequate instruction and intact sensory ability. The two systems serve different purposes — SNOMED CT for granular clinical documentation, ICD-11 for statistical and diagnostic classification — and are routinely cross-walked in interoperable records.

The clinical concept, briefly

Developmental dyslexia is a neurodevelopmental disorder of reading, distinct from acquired (alexic) reading loss. The hallmark is a marked, unexpected shortfall in word reading, decoding and spelling relative to age, schooling and overall cognition. Under ICD-11, 6A03.0 sits within the 6A03 Developmental learning disorder family; it presumes adequate educational opportunity and excludes impairment attributable to intellectual disability, uncorrected visual or hearing deficit, or another neurological condition. When documenting in SNOMED CT, prefer the specific developmental concept (192352006) over the broader finding (84229001) where the clinical picture is developmental rather than acquired, and pair it with the relevant ICD-11 code for classification and reporting.

When to refer

Refer for structured assessment where reading and spelling difficulty persists beyond the expected window of early literacy acquisition (typically not reliably diagnosable before ~6–8 years), is disproportionate to cognitive ability, and is not explained by sensory or instructional factors. Co-occurring speech-language, attentional or motor-coordination concerns should prompt a broader developmental profile.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from a code lookup or an online form. Our team works across speech and language therapy and structured literacy support, anchored by a clinician-administered AbilityScore® assessment that establishes a child's reading and language baseline. Explore how we partner on early developmental care for children with learning differences.

Trusted sources

WHO ICD-11 for Mortality and Morbidity Statistics (6A03.0, Developmental learning disorder with impairment in reading); ASHA guidance on written-language and literacy disorders. SNOMED CT concept identifiers are drawn from the international edition for clinical interoperability.

Next step — Documenting or referring a child with reading impairment? Partner with a Pinnacle clinician for structured assessment.

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