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What is the ICD-11 classification for Developmental Regression?
Developmental regression is not a single ICD-11 diagnosis but a functional descriptor — the loss of previously acquired skills. ICD-11 records it as a symptom/finding and attributes it to an underlying condition (e.g. Disorders of Intellectual Development 6A00, Autism Spectrum Disorder 6A02, or a neurological/metabolic aetiology), which carries the primary code.
Read the answer AnswerWhat is the ICD-11 classification for Developmental Trauma?
Developmental trauma is not a standalone ICD-11 diagnosis; it is a descriptor concept that maps onto existing entities, most closely Complex PTSD (6B41) under disorders specifically associated with stress, with attachment, mood and anxiety codes applied by presentation. The ICF framework best captures its developmental functional impact.
Read the answer AnswerICD-11 Classification for Down Syndrome (LD40.0)
In ICD-11-MMS, Down syndrome is coded LD40.0 (Trisomy 21) under the parent LD40 Down syndrome, in the developmental anomalies chapter. The code names the chromosomal aetiology; associated intellectual, cardiac, hearing and thyroid features are coded alongside, with care driven by functioning rather than the label.
Read the answer AnswerICD-11 Classification of Dyscalculia (6A03.2)
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.
Read the answer AnswerICD-11 Classification of Dysgraphia (6A03.1)
In ICD-11-MMS, dysgraphia is classified under 6A03 Developmental learning disorder as 6A03.1 — developmental learning disorder with impairment in written expression: persistent, age-disproportionate difficulty with spelling, grammar, punctuation and written organisation, not explained by intellectual, sensory, neurological or instructional factors.
Read the answer AnswerICD-11 Classification for Dyslexia (Reading Impairment)
In ICD-11-MMS, Dyslexia is coded 6A03.0 — Developmental learning disorder with impairment in reading, under the parent category 6A03. It denotes persistent, significant difficulty with reading accuracy, fluency and comprehension below age and ability expectation, not explained by intellectual disability, sensory impairment or inadequate schooling.
Read the answer AnswerICD-11 classification for Emotional & Behavioural Difficulties
"Emotional & Behavioural Difficulties" is a functional/educational descriptor, not a single ICD-11 code. In ICD-11 the presentations map onto Chapter 06 entities — chiefly Disruptive behaviour or dissocial disorders (6C90–6C91) and Anxiety or fear-related disorders (6B00–6B0Z) — with coding driven by the predominant clinical picture, paired with the ICF for functioning.
Read the answer AnswerICD-11 Classification for Feeding & Eating Difficulties (6B8Z)
In ICD-11-MMS, 6B8Z is the residual code 'Feeding or eating disorders, unspecified', within the Feeding or eating disorders block (6B8). It applies to clinically significant but incompletely characterised presentations; many paediatric feeding cases map better to ARFID (6B83). Diagnosis is formed only at a Pinnacle centre under clinician care.
Read the answer AnswerICD-11 Classification for Fetal Alcohol Spectrum Disorder
In ICD-11-MMS, Fetal Alcohol Spectrum Disorder is classified under code LD2F.00, within the developmental anomalies attributable to prenatal substance exposure. It captures the neurodevelopmental, growth and (in some cases) physical effects of prenatal alcohol exposure as a spectrum. The code establishes the category; a clinician-led functional profile drives the support plan.
Read the answer AnswerWhat is the ICD-11 classification for Fine Motor Delay?
ICD-11 has no standalone "Fine Motor Delay" code. It is a functional descriptor: persistent fine motor coordination difficulty is coded as 6A04 Developmental motor coordination disorder; when part of multi-domain delay under 5, as LD16.4 Global developmental delay; or to the primary condition (e.g. cerebral palsy). Functional impact is profiled via the WHO ICF.
Read the answer AnswerWhat is the ICD-11 classification for Genetic / Chromosomal Syndromes?
In ICD-11, genetic and chromosomal syndromes sit mainly in Chapter 20 (Developmental anomalies, LA00–LD9Z), with chromosomal abnormalities under LD40–LD44. ICD-11 is multi-axial: the syndromic/aetiological code is post-coordinated with associated conditions (e.g. 6A00 disorders of intellectual development) and an ICF functioning profile, which is what drives developmental therapy.
Read the answer AnswerICD-11 Classification of Global Developmental Delay
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.
Read the answer AnswerWhat is the ICD-11 classification for Gross Motor Delay?
ICD-11 has no standalone 'Gross Motor Delay' code; it is a functional descriptor. When persisting and predominant it maps to Developmental motor coordination disorder (6A04); within global delay to Disorders of intellectual development (6A00); transient isolated delay to milestone symptom codes — with any underlying aetiology coded separately.
Read the answer AnswerICD-11 Classification of Hearing Impairment
In ICD-11, hearing impairment sits in Chapter 08 (Diseases of the ear and mastoid process) under the hearing impairment and deafness block, principally AB50 (conductive, sensorineural or mixed) and AB51. Type, laterality and WHO severity grades are specified; functional impact is captured via the ICF.
Read the answer AnswerICD-11 Classification of Hypotonia (Low Muscle Tone)
In ICD-11, hypotonia is classified as a clinical sign (MB47.4 Hypotonia) under symptoms and signs of the musculoskeletal system — a manifestation, not a diagnosis. The underlying central, peripheral, genetic or metabolic cause must be coded separately, and ICF describes its functional impact on posture, feeding and motor milestones.
Read the answer AnswerICD-11 Classification for Intellectual Disability (6A00)
In ICD-11-MMS, Intellectual Disability is classified as 6A00, Disorders of Intellectual Development, under Neurodevelopmental Disorders. It is defined by significantly below-average intellectual and adaptive functioning originating in the developmental period, with severity coded mild, moderate, severe or profound, plus provisional categories where standardised testing is not yet feasible.
Read the answer AnswerICD-11 Classification for Motor Planning Difficulties
Motor planning difficulties are a functional descriptor, not a standalone ICD-11 term. They map to ICD-11 6A04 Developmental Motor Coordination Disorder within the neurodevelopmental disorders block, with praxis-related limitations also codable under the WHO ICF functioning lens.
Read the answer AnswerICD-11 Classification for Non-Verbal / Minimally Verbal Presentation
"Non-verbal" and "minimally verbal" are functional descriptors of expressive communication, not ICD-11 diagnoses. ICD-11 codes the underlying condition (e.g. 6A02 autism with the functional-language qualifier, 6A00 disorders of intellectual development, or 6A01.1 developmental language disorder) on the diagnostic axis, while the WHO ICF framework describes the degree of spoken-language limitation and its impact.
Read the answer AnswerICD-11 Classification of Oppositional Defiant Disorder (6C90)
In ICD-11-MMS, Oppositional Defiant Disorder is coded 6C90 within disruptive behaviour or dissocial disorders, defined as a persistent (~6-month) pattern of markedly defiant, disobedient or spiteful behaviour beyond age-typical limits, with a specifier for chronic irritability and anger.
Read the answer AnswerWhat is the ICD-11 classification for Persistent Toe-Walking?
ICD-11 has no dedicated code for persistent (idiopathic) toe-walking; it is a gait descriptor captured under MB44 Abnormalities of gait and mobility in Chapter 21. Secondary toe-walking is coded to its underlying cause — cerebral palsy, neuromuscular disorder, contracture or an associated neurodevelopmental condition such as autism (6A02).
Read the answer AnswerICD-11 Classification for Prematurity-Related Developmental Risk
Prematurity-Related Developmental Risk is not a single ICD-11 diagnosis but a risk descriptor. ICD-11 codes the gestational status under the perinatal chapter (KA2x) and codes any developmental sequelae separately as they emerge. The clinical stance is corrected-age developmental surveillance, not premature labelling.
Read the answer AnswerICD-11 Classification of Rett Syndrome (LD90.0)
In ICD-11-MMS, Rett syndrome is classified under code LD90.0 within developmental anomalies of the nervous system. It denotes a monogenic neurodevelopmental disorder, most often caused by MECP2 variants, marked by early normal development followed by regression of hand skills and language, gait abnormalities and stereotypic hand movements.
Read the answer AnswerICD-11 Classification for School Readiness Gap
"School Readiness Gap" is a functional descriptor, not an ICD-11 diagnostic code. It is best mapped through the WHO ICF as a participation/functioning construct, with any underlying condition (e.g. developmental language disorder, ADHD) coded separately under ICD-11 if identified. Treat it as a screening flag warranting structured developmental profiling, not a label.
Read the answer AnswerWhat is the ICD-11 classification for Selective Mutism?
In ICD-11-MMS, Selective Mutism is coded 6B06 and classified within Anxiety or fear-related disorders — reframing it as an anxiety-driven condition marked by consistent failure to speak in specific social settings despite normal speech elsewhere.
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