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Fetal Alcohol Spectrum Disorder: ICD-11 Definition & Early Features
Fetal Alcohol Spectrum Disorder (ICD-11 LD2F.00) is the permanent neurodevelopmental and physical effect of prenatal alcohol exposure, defined across facial dysmorphology, growth restriction and CNS involvement. In early childhood the picture is mainly neurobehavioural — developmental delay, microcephaly, regulatory and attention difficulties — warranting multidisciplinary assessment.
Prenatal alcohol exposure leaves a lifelong neurodevelopmental signature — recognising it early changes the trajectory.
In short
Fetal Alcohol Spectrum Disorder (FASD) is an umbrella term for the range of neurodevelopmental and physical effects following prenatal alcohol exposure. In ICD-11 it is classified under LD2F.00 within the foetal alcohol syndrome grouping. It is a permanent, non-progressive condition, but functional outcomes improve substantially with early identification and structured support.
The science, briefly
Alcohol is a potent teratogen; in utero exposure disrupts neuronal migration, the corpus callosum, cerebellum and basal ganglia. The ICD-11 framework anchors FASD to three core domains: characteristic facial dysmorphology (short palpebral fissures, smooth philtrum, thin upper lip — most diagnostic when all three co-occur), prenatal and/or postnatal growth restriction, and CNS involvement. In early childhood the presentation is dominated by neurobehavioural features rather than dysmorphology, which can be subtle: global or domain-specific developmental delay, microcephaly, feeding and sleep dysregulation, irritability, poor habituation, and emerging deficits in attention, motor coordination and adaptive function. Confirmed maternal alcohol exposure strengthens the case but is not always documented; absence of report does not exclude FASD where the neurodevelopmental phenotype fits.
When to refer
Refer any child with disproportionate neurodevelopmental delay, the facial triad, growth restriction, or microcephaly — particularly where prenatal exposure is known or suspected — for structured multidisciplinary developmental assessment.
The Pinnacle way
A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from an online form. Our pathways for FASD and developmental therapy translate the ICD-11 profile into a measurable, family-led support plan.
Trusted sources
WHO ICD-11 (LD2F foetal alcohol syndrome); CDC guidance on FASD; AAP developmental surveillance recommendations — all paraphrased.
Next step — Partner with Pinnacle for structured FASD assessment and co-managed developmental care. Refer or collaborate with a Pinnacle centre.
This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.
What to notice
Disproportionate developmental delay, microcephaly, the facial triad (short palpebral fissures, smooth philtrum, thin upper lip), growth restriction, and early regulatory difficulties — especially where prenatal alcohol exposure is known or suspected.
In everyday life
When taking a developmental history, ask about prenatal exposures non-judgementally and routinely — absence of a documented report does not exclude FASD where the neurodevelopmental phenotype fits.
Questions families ask
What is the ICD-11 code for Fetal Alcohol Spectrum Disorder?
FASD is classified under LD2F.00 within the foetal alcohol syndrome grouping in ICD-11-MMS, reflecting prenatal alcohol exposure with neurodevelopmental and physical effects.
What are the three core diagnostic domains of FASD?
Characteristic facial dysmorphology (short palpebral fissures, smooth philtrum, thin upper lip), prenatal and/or postnatal growth restriction, and central nervous system involvement.
Can FASD be identified in early childhood without facial features?
Yes. In early childhood the presentation is dominated by neurobehavioural features — developmental delay, microcephaly, regulatory and attention difficulties — as dysmorphology can be subtle, so the neurodevelopmental profile guides assessment.
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Sources & further reading
- WHO ICD-11 — Foetal alcohol syndrome (LD2F)
- CDC — Fetal Alcohol Spectrum Disorders
- AAP — Developmental surveillance and screening
References are those supplied with this answer. A general organisation website is a route to further reading, rather than evidence of an independent review of this page.
Content attribution in the source record: SETU Consortium · Pinnacle Blooms Network.
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