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Understanding
Sensory Processing Differences vs Speech and Language Delay
Sensory Processing Differences and Speech and Language Delay are distinct developmental threads. Sensory differences are about how a child takes in and responds to sensations such as sound, touch and movement — feeling them too strongly, too faintly or seeking them intensely. Speech and language delay is about communication — understanding words and using sounds, words and sentences. They can overlap, which is why a whole-child review matters rather than a single label.
Read the answer AnswerSpecific Learning Disability vs Sensory Processing Differences
Specific Learning Disability (SLD) is a brain-based difference in learning academic skills — reading, writing or maths — in an otherwise typically developing child, and is reliably recognised only around age 6–8. Sensory Processing Differences describe how a child receives and responds to everyday input such as sound, touch, light or movement, affecting daily life broadly, not just schoolwork. They are distinct, can co-occur, and neither reflects effort or intelligence.
Read the answer AnswerSLD vs Speech and Language Delay in Young Children
A speech and language delay is a slower-than-expected development of talking and understanding, noticed in the early toddler and preschool years. A specific learning disability (SLD) is a difference in how the brain handles reading, writing, spelling or number skills, and usually only becomes clear once formal schooling and literacy begin around ages 6–8. They are distinct, can overlap, and neither reflects a child's intelligence.
Read the answer AnswerFamily Environment Scale (FES)
The Family Environment Scale (FES) is a structured questionnaire that describes what family life feels like — how warm and connected members are, how openly they express feelings, how conflict is handled, what growth and values the family encourages, and how organised the home is. It is completed by family members from their own perspectives. It is not a diagnosis or a judgement of parenting, but a way for clinicians to understand the home context that surrounds a child's development and to plan family-centred support.
Read the answer AnswerWhat is the Gilliam Autism Rating Scale, 3rd Ed (GARS-3)?
The Gilliam Autism Rating Scale, 3rd Edition (GARS-3) is a standardised rating scale completed by a parent, teacher or carer who knows the child well, used by trained professionals to gather and organise observations of behaviours associated with autism in people aged roughly 3 to 22 years. It covers areas such as restricted and repetitive behaviours, social interaction, social communication, emotional responses, cognitive style and unusual use of language. It is a screening and information-gathering tool, never a diagnosis on its own, and is always interpreted by a qualified clinician within a fuller evaluation.
Read the answer AnswerWhat is the Griffiths Scales of Child Development, 3rd ed. (Griffiths III)?
The Griffiths Scales of Child Development, 3rd edition (Griffiths III) is an internationally used, clinician-administered, play-based assessment for children from birth to around 6 years. It builds a developmental profile across five areas — Foundations of Learning, Language and Communication, Eye and Hand Co-ordination, Personal–Social–Emotional, and Gross Motor. It is not a pass-or-fail test or a diagnosis on its own, but a tool clinicians use to understand a child's strengths and plan support.
Read the answer AnswerWhat Is the Gross Motor Function Measure (GMFM)?
The Gross Motor Function Measure (GMFM) is a clinician-administered, observational assessment of large-muscle movement — lying and rolling, sitting, crawling and kneeling, standing, and walking, running and jumping. Used most often with children who have cerebral palsy and other motor conditions, it maps what a child can do today and is especially valued for measuring progress over time. It is play-based and child-friendly, never a test a child can pass or fail.
Read the answer AnswerICD-11 Classification for Attachment Difficulties (6B44)
In ICD-11-MMS, attachment difficulties are classified as 6B44 Reactive attachment disorder, within disorders specifically associated with stress. It describes grossly abnormal attachment behaviour in early childhood arising from pathogenic care, distinct from 6B45 Disinhibited social engagement disorder and from autism spectrum disorder.
Read the answer AnswerICD-11 Classification for Auditory Processing Difficulties
ICD-11 has no dedicated standalone code for Auditory Processing Disorder; it is a functional descriptor coded through the Diseases of the auditory system chapter when pathology is present, supplemented by ICF functioning descriptors. Classification rests on the audiological and developmental profile, not the label alone.
Read the answer AnswerICD-11 Classification for Cerebral Palsy (8D20)
In ICD-11-MMS, Cerebral Palsy is coded 8D20, a group of permanent, non-progressive disorders of movement and posture due to a disturbance in the developing brain. Subtypes include spastic, dyskinetic and ataxic forms. Pair ICD-11 coding with a WHO ICF functioning profile to drive the therapy plan.
Read the answer AnswerWhat is the ICD-11 classification for Childhood Anxiety?
In ICD-11-MMS, 6B0Z is 'Anxiety or fear-related disorders, unspecified' — a residual code within the 6B0 grouping. ICD-11 has no standalone paediatric anxiety block; childhood anxiety is coded using specific entities such as separation anxiety disorder (6B05) applied with developmental judgement, reserving 6B0Z for documented but not-yet-specifiable presentations.
Read the answer AnswerICD-11 Classification for Childhood Epilepsy (8A6Z)
In ICD-11-MMS, 8A6Z is 'Epilepsy or seizures, unspecified' — the residual code within the epilepsy block (8A60–8A6Z) under diseases of the nervous system. For childhood epilepsy, code to the most specific syndrome, seizure type and aetiology available; 8A6Z applies only when documentation is insufficient. Epilepsy is a medical-urgency condition requiring prompt paediatric-neurology referral.
Read the answer AnswerICD-11 Classification of Childhood Sleep Difficulties
In ICD-11, childhood sleep difficulties are classified under Chapter 07 — Sleep-wake disorders (7A00–7B2Z), a dedicated chapter. Paediatric presentations map mainly to insomnia disorders (7A00–7A0Z), circadian rhythm disorders (7A60–7A6Z) and parasomnias (7B00–7B2Z). Post-coordination links sleep codes to comorbid conditions.
Read the answer AnswerWhat 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 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 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 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 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 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 Sensory-Based Feeding Selectivity
Sensory-Based Feeding Selectivity is not a discrete ICD-11 entity. When sensory-driven food refusal causes nutritional deficiency, faltering growth, supplement dependence or psychosocial impairment, it is coded under ICD-11-MMS 6B83 Avoidant-restrictive food intake disorder (ARFID). Developmentally typical picky eating without these consequences does not meet the threshold.
Read the answer AnswerICD-11 Classification of Separation Anxiety Disorder (6B05)
In ICD-11-MMS, Separation Anxiety Disorder is coded 6B05 within the Anxiety or fear-related disorders block. ICD-11 removed the childhood-onset restriction of ICD-10, applying the diagnosis across the lifespan where excessive, persistent separation-related fear causes significant distress or impairment.
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