{"h1":"Childhood Anxiety: ICD-11 Features in Early Childhood","faq":[{"a":"6B0Z denotes anxiety or fear-related disorders, unspecified — used when the presentation is clearly anxiety-driven but does not yet meet criteria for a specified entity such as separation anxiety disorder (6B05) or selective mutism (6B06).","q":"What does ICD-11 code 6B0Z mean?"},{"a":"Normative fears — of strangers, the dark, or separation — are transient and age-expected. A disorder is considered when fear is persistent, disproportionate, and impairs functioning across multiple settings.","q":"How is childhood anxiety distinguished from normal childhood fears?"},{"a":"Young children express anxiety somatically and behaviourally: separation distress, freezing or selective mutism, nightmares, bedtime resistance, irritability, and reassurance-seeking rather than verbal worry.","q":"How does anxiety present in children under five?"}],"lang":"en","slug":"what-is-childhood-anxiety-and-what-are-its-icd-11-features-in-early-childhood","title":"What is Childhood Anxiety, and what are its ICD-11 features in early childhood?","entity":{"key":"anxiety-child","kind":"condition","name":"Childhood Anxiety","slug":"childhood-anxiety"},"lenses":[{"kind":"stakeholder","label":"Doctor","value":"doctor"},{"kind":"domain","label":"Emotional","value":"emotional"},{"kind":"intent","label":"Definition","value":"definition"},{"kind":"lifecycle","label":"Screen","value":"screen"},{"kind":"route","label":"Special-Education","value":"special-education"},{"kind":"empowerment","label":"Early Clarity","value":"early_clarity"}],"parent":{"key":"conditions","label":"Conditions"},"related":[{"lang":"en","slug":"what-is-separation-anxiety-disorder-and-what-are-its-icd-11-features-in-early-childhood","title":"Separation Anxiety Disorder (ICD-11 6B05): a clinician explainer"},{"lang":"en","slug":"what-is-childhood-anxiety-and-what-does-it-look-like-in-early-childhood","title":"Childhood Anxiety in Early Childhood"},{"lang":"en","slug":"which-icf-functioning-domains-does-childhood-anxiety-affect-in-early-childhood","title":"Childhood Anxiety and ICF Functioning Domains in Early Childhood"},{"lang":"en","slug":"what-is-the-snomed-ct-concept-for-childhood-anxiety","title":"What is the SNOMED CT concept for Childhood Anxiety?"},{"lang":"en","slug":"what-are-the-known-contributing-factors-for-childhood-anxiety-in-early-childhood","title":"Contributing Factors for Childhood Anxiety"},{"lang":"en","slug":"what-is-childhood-anxiety","title":"What is Childhood Anxiety?"}],"summary":"Childhood anxiety is developmentally excessive, persistent, impairing fear or worry distinct from normative early fears. ICD-11 code 6B0Z covers anxiety or fear-related disorders, unspecified; in early childhood it presents somatically and behaviourally — separation distress, behavioural inhibition, sleep disruption — and is coded by functional impairment, not fear alone.","answer_md":"*Anxiety in young children rarely announces itself in words — it surfaces in the body, the routine, and the refusal to separate.*\n\n## In short\nChildhood anxiety refers to developmentally excessive fear or worry that is persistent, out of proportion to the situation, and impairing across settings — distinct from the normative, transient fears of early childhood. Within **ICD-11**, **6B0Z** denotes *Anxiety or fear-related disorders, unspecified*, used when the presentation is clearly anxiety-driven but does not yet meet criteria for a specified entity such as separation anxiety disorder (6B05) or selective mutism (6B06). The diagnostic threshold is functional impairment, not the mere presence of fear.\n\n## ICD-11 features in early childhood\nIn the under-fives, anxiety is expressed behaviourally and somatically rather than verbally. Watch for:\n- **Developmentally inappropriate separation distress** — extreme protest, clinging, or somatic complaints (stomachache, headache) on separation beyond expected age norms.\n- **Behavioural inhibition** — freezing, withdrawal, or selective non-speaking (selective mutism) in specific social settings despite normal speech at home.\n- **Autonomic and sleep disruption** — recurrent nightmares, bedtime resistance, irritability, and reassurance-seeking.\n- **Cross-context persistence** — symptoms appearing at home, crèche, and with caregivers, not a single trigger.\n\nApply the ICF lens: code the impairment in participation, not the worry alone. Differentiate from autism-related social difference and from developmentally normal stranger or dark fears.\n\n## The Pinnacle way\nDevelopmental measurement supports care planning; diagnosis requires an appropriately qualified healthcare professional., under qualified clinician care — never from an online form. Our [childhood anxiety pathway](/childhood-anxiety) pairs structured assessment with [behavioural therapy](/behavioural-therapy), and the [clinician-administered AbilityScore®](/ask/what-is-the-abilityscore-and-how-is-it-calculated) anchors a measurable baseline.\n\n## Trusted sources\nWHO ICD-11 for Mortality and Morbidity Statistics, anxiety or fear-related disorders grouping; WHO ICF framework for functioning and participation.\n\n**Next step —** Refer a young child with persistent, cross-setting anxiety for structured assessment and a shared care plan via [Pinnacle's clinician partnership](/childhood-anxiety).\n\nThis is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.","canonical":"https://pinnacleblooms.org/ask/what-is-childhood-anxiety-and-what-are-its-icd-11-features-in-early-childhood","editorial":{"reviewed_at":"2026-06-11T20:12:18.613642+00:00","reviewed_by":null,"developed_by":"SETU Consortium · Pinnacle Blooms Network"},"alternates":[{"href":"https://pinnacleblooms.org/ask/what-is-childhood-anxiety-and-what-are-its-icd-11-features-in-early-childhood","lang":"en","indexable":true},{"href":"https://pinnacleblooms.org/ask/what-is-childhood-anxiety-and-what-are-its-icd-11-features-in-early-childhood-te","lang":"te","indexable":true}],"dimensions":[{"key":"conditions","label":"Conditions"}],"meta_title":"Childhood Anxiety: ICD-11 Features (6B0Z)","meta_robots":"index, follow, max-image-preview:large","everyday_tip":"When counselling parents, frame the goal as building tolerance for separation in small graded steps rather than eliminating all distress — predictable goodbyes and consistent return reduce anticipatory anxiety.","published_at":"2026-06-10T10:42:00.172548+00:00","reading_paths":[{"key":"understand","items":[{"lang":"en","slug":"what-is-childhood-anxiety","title":"What is Childhood Anxiety?","reason":"Linked from this 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threshold.","authority_links":[{"url":"https://icd.who.int/browse11","code":"6B0Z","label":"WHO ICD-11 — anxiety or fear-related disorders"},{"url":"https://www.who.int/standards/classifications/international-classification-of-functioning-disability-and-health","label":"WHO ICF framework for functioning"}],"last_reviewed_at":"2026-06-10T10:42:00.172548+00:00","meta_description":"Childhood anxiety defined for clinicians: ICD-11 code 6B0Z, early-childhood features, and when to refer for structured assessment and care.","related_materials":[],"related_techniques":[]}