# What is the ICD-11 classification for Childhood Anxiety?

Canonical: https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-childhood-anxiety
Publisher: Pinnacle Blooms Network / Bharath Healthcare Laboratories Private Limited

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.

*Childhood anxiety rarely declares itself with a single code — it sits within a structured ICD-11 grouping that a clinician maps to the specific presentation.*

## In short
In the **ICD-11-MMS**, **6B0Z** is the residual category **"Anxiety or fear-related disorders, unspecified"** — used when an anxiety presentation in a child is clinically established but does not yet meet criteria for a more specific entity within the parent grouping **6B0–6B0Z (Anxiety or fear-related disorders)**. ICD-11 does not carve out a standalone paediatric anxiety block; childhood presentations are coded using the same disorder definitions applied with a developmental lens. The most relevant child-onset specific entity remains **separation anxiety disorder (6B05)**.

## How ICD-11 frames it
Unlike ICD-10, ICD-11 deliberately moved away from a separate "disorders with onset in childhood" silo for most anxiety presentations. Instead, clinicians select the best-fitting entity within the 6B0 grouping — for example generalised anxiety disorder (6B00), social anxiety disorder (6B04), separation anxiety disorder (6B05), or selective mutism (6B06) — and apply developmental judgement about age-expected fears versus clinically significant, persistent impairment. **6B0Z** is reserved for clinically significant anxiety that is documented but not further specifiable at the point of coding; it is a placeholder, not a preferred working diagnosis. Good practice is to refine toward a specific code as assessment matures, and to distinguish transient, developmentally normative anxiety from a disorder-level course.

## When to refer
Refer for structured assessment when anxiety is persistent (typically several weeks or more), pervasive across home and school, and functionally impairing — affecting attendance, sleep, peer relationships or learning — beyond what is expected for age. Comorbidity screening (mood, neurodevelopmental, somatic) is advisable, as is differentiating selective mutism and separation anxiety from social anxiety.

## The Pinnacle way
A clinical [AbilityScore®](/ask/what-is-the-abilityscore-and-how-is-it-calculated) and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — coding is confirmed clinically, never inferred from a checklist. Our [child psychology and behavioural therapy](/child-psychology) pathway supports anxiety presentations alongside structured developmental profiling. Explore the wider [Pinnacle approach](/) for how assessment translates into a plan families can follow.

## Trusted sources
WHO ICD-11 for Mortality and Morbidity Statistics, grouping for anxiety or fear-related disorders; WHO clinical descriptions and diagnostic requirements for mental and behavioural disorders.

**Next step —** For a clinician-led assessment that confirms the right ICD-11 entity and a support plan, [partner with a Pinnacle centre](/child-psychology).

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

## Sources
- WHO ICD-11 for Mortality and Morbidity Statistics: https://icd.who.int/
- WHO — mental and behavioural disorders classification: https://www.who.int/

## Connected topics and perspectives
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- Emotional: https://pinnacleblooms.org/ask/lens/domain/emotional
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
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- Screen: https://pinnacleblooms.org/ask/lens/route/screen
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