# ICD-11 Classification of Conduct-Dissocial Disorder (6C91)

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

ICD-11 (MMS) classifies Conduct-Dissocial Disorder as 6C91, within the grouping 6C9 Disruptive behaviour or dissocial disorders, under Mental, behavioural or neurodevelopmental disorders. It denotes a persistent pattern violating others' rights or major societal norms, with onset, course and limited-prosocial-emotions qualifiers.

*Behind a referral for persistent rule-breaking and aggression sits a precise ICD-11 grouping — knowing exactly where 6C91 sits sharpens both formulation and care planning.*

## In short
In ICD-11 (MMS), **Conduct-Dissocial Disorder is coded 6C91**, situated within the grouping **Disruptive behaviour or dissocial disorders** (6C9), under the broader chapter of **Mental, behavioural or neurodevelopmental disorders**. It is defined by a repetitive, persistent pattern of behaviour that violates the basic rights of others or major age-appropriate societal norms, rules or laws — clearly beyond ordinary childhood mischief and sustained over time.

## The classification in detail
Within the 6C9 grouping, ICD-11 distinguishes **6C90 Oppositional defiant disorder** from **6C91 Conduct-dissocial disorder**. The 6C91 pattern includes aggression toward people or animals, destruction of property, deceitfulness or theft, and serious violations of rules, typically enduring **12 months or more**.

ICD-11 replaces the older ICD-10 childhood/adolescent-onset split with **onset and course qualifiers** and a clinically important specifier of **limited prosocial emotions** (callous-unemotional traits) — lack of remorse, shallow affect, unconcern about performance — which carries prognostic weight. Subtype and age-of-onset qualifiers (childhood vs adolescent onset) further refine the formulation. Differential consideration should exclude oppositional defiant disorder, ADHD-driven impulsivity, mood or trauma-related presentations, and autism-spectrum behavioural patterns before the 6C91 code is applied.

## When to refer
Refer for structured assessment when aggressive, deceitful or rule-violating behaviour is **pervasive across settings**, persistent over months, and disproportionate to developmental stage — particularly with co-occurring ADHD, learning difficulties, or adverse childhood experiences, where early multimodal intervention measurably improves trajectory.

## The Pinnacle way
AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from a code lookup or an online form. Our teams use a clinician-administered structured assessment to map functioning across communication, cognition, social and emotional-regulation domains before any classification is confirmed. Explore [how the AbilityScore® is established](/ask/what-is-the-abilityscore-and-how-is-it-calculated), our [behavioural and developmental therapy pathways](/behavioural-therapy), and [the Pinnacle network](/).

## Trusted sources
WHO ICD-11 for Mortality and Morbidity Statistics, grouping 6C9 Disruptive behaviour or dissocial disorders (icd.who.int); WHO clinical descriptions and diagnostic requirements for mental, behavioural and neurodevelopmental disorders.

**Next step —** Reviewing a child with disruptive-behaviour concerns? [Refer to a Pinnacle clinician for structured assessment](/behavioural-therapy).

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

## Sources
- WHO ICD-11 MMS — Disruptive behaviour or dissocial disorders (6C9): https://icd.who.int
- WHO — Mental, behavioural and neurodevelopmental disorders: https://www.who.int

## Connected topics and perspectives
- Conditions: https://pinnacleblooms.org/ask/conditions
- Doctor: https://pinnacleblooms.org/ask/lens/stakeholder/doctor
- Social: https://pinnacleblooms.org/ask/lens/domain/social
- Definition: https://pinnacleblooms.org/ask/lens/intent/definition
- Screen: https://pinnacleblooms.org/ask/lens/lifecycle/screen
- Behaviour Therapy: https://pinnacleblooms.org/ask/lens/route/behaviour-therapy
- Early Clarity: https://pinnacleblooms.org/ask/lens/empowerment/early_clarity

## Related question paths

### Understand the subject
- Conduct-Dissocial Disorder (ICD-11 6C91): Early-Childhood Features: https://pinnacleblooms.org/ask/what-is-conduct-dissocial-disorder-and-what-are-its-icd-11-features-in-early-childhood
- Conduct-Dissocial Disorder Explained for Parents: https://pinnacleblooms.org/ask/what-is-conduct-dissocial-disorder
- ICD-11 Classification of Oppositional Defiant Disorder (6C90): https://pinnacleblooms.org/ask/what-is-the-icd-11-classification-for-oppositional-defiant-disorder
- What is the SNOMED CT concept for Conduct-Dissocial Disorder?: https://pinnacleblooms.org/ask/what-is-the-snomed-ct-concept-for-conduct-dissocial-disorder
- What is Conduct-Dissocial Disorder, and what does it look like in early childhood?: https://pinnacleblooms.org/ask/what-is-conduct-dissocial-disorder-and-what-does-it-look-like-in-early-childhood
- How Conduct-Dissocial Disorder Affects a Child's Daily Life: https://pinnacleblooms.org/ask/how-does-conduct-dissocial-disorder-affect-a-child-s-daily-life
- Is Conduct-Dissocial Disorder Considered a Disability?: https://pinnacleblooms.org/ask/is-conduct-dissocial-disorder-considered-a-disability
- Is Conduct-Dissocial Disorder Genetic or Hereditary?: https://pinnacleblooms.org/ask/is-conduct-dissocial-disorder-genetic-or-hereditary
- What are common myths about Conduct-Dissocial Disorder?: https://pinnacleblooms.org/ask/what-are-common-myths-about-conduct-dissocial-disorder
- Types and Levels of Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-are-the-types-or-levels-of-conduct-dissocial-disorder
- What causes Conduct-Dissocial Disorder in children?: https://pinnacleblooms.org/ask/what-causes-conduct-dissocial-disorder-in-children
- Early intervention outcomes for Conduct-Dissocial Disorder under 7: https://pinnacleblooms.org/ask/what-does-current-research-show-about-early-intervention-outcomes-for-conduct-dissocial-disorder-in-children-under-7

### Recognise signs & concerns
- Early Signs of Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-conduct-dissocial-disorder
- Conduct-Dissocial Disorder red flags for referral in young children: https://pinnacleblooms.org/ask/what-clinical-red-flags-for-conduct-dissocial-disorder-warrant-referral-in-a-young-child
- Early indicators of conduct-dissocial disorder for paediatricians: https://pinnacleblooms.org/ask/what-early-indicators-of-conduct-dissocial-disorder-should-a-paediatrician-watch-for
- When to refer suspected Conduct-Dissocial Disorder for therapy: https://pinnacleblooms.org/ask/when-should-a-doctor-refer-a-child-with-suspected-conduct-dissocial-disorder-for-developmental-therapy
- Can Conduct-Dissocial Disorder Be Cured?: https://pinnacleblooms.org/ask/can-conduct-dissocial-disorder-be-cured
- Can Conduct-Dissocial Disorder Be Prevented?: https://pinnacleblooms.org/ask/can-conduct-dissocial-disorder-be-prevented
- Do boys show Conduct-Dissocial Disorder differently?: https://pinnacleblooms.org/ask/do-boys-show-conduct-dissocial-disorder-differently
- Do girls show Conduct-Dissocial Disorder differently?: https://pinnacleblooms.org/ask/do-girls-show-conduct-dissocial-disorder-differently
- Spotting Conduct-Dissocial Disorder early: https://pinnacleblooms.org/ask/how-can-a-frontline-health-worker-spot-a-child-with-possible-conduct-dissocial-disorder-early
- Should I be worried my child might have Conduct-Dissocial Disorder?: https://pinnacleblooms.org/ask/should-i-be-worried-my-child-might-have-conduct-dissocial-disorder
- Early signs of Conduct-Dissocial Disorder in a 1-year-old boy: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-conduct-dissocial-disorder-in-a-1-year-old-boy
- Early Signs of Conduct-Dissocial Disorder in a 1-Year-Old Girl: https://pinnacleblooms.org/ask/what-are-the-early-signs-of-conduct-dissocial-disorder-in-a-1-year-old-girl

### Explore causes & influences
- Contributing factors for Conduct-Dissocial Disorder in early childhood: https://pinnacleblooms.org/ask/what-are-the-known-contributing-factors-for-conduct-dissocial-disorder-in-early-childhood
- Are boys more likely to have Conduct-Dissocial Disorder?: https://pinnacleblooms.org/ask/are-boys-more-likely-to-have-conduct-dissocial-disorder
- Are girls more likely to have Conduct-Dissocial Disorder?: https://pinnacleblooms.org/ask/are-girls-more-likely-to-have-conduct-dissocial-disorder
- Early Intervention for Conduct-Dissocial Disorder & UN Child Rights: https://pinnacleblooms.org/ask/how-does-early-intervention-for-conduct-dissocial-disorder-advance-un-child-rights-uncrpd-and-the-sdgs
- What causes Conduct-Dissocial Disorder in young children?: https://pinnacleblooms.org/ask/what-causes-conduct-dissocial-disorder-in-young-children
- Cost-Effectiveness of Early Therapy for Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-is-the-cost-effectiveness-of-early-therapy-for-conduct-dissocial-disorder-in-young-children
- Conduct-Dissocial Disorder: prevalence and public-health burden in young Indian children: https://pinnacleblooms.org/ask/what-is-the-prevalence-and-public-health-burden-of-conduct-dissocial-disorder-among-young-children-in-india

### Understand assessment
- Recommended Pathway for Conduct-Dissocial Disorder in Children Under 7: https://pinnacleblooms.org/ask/what-is-the-recommended-screening-and-diagnostic-pathway-for-conduct-dissocial-disorder-in-children-under-7
- How AbilityScore Tracks Progress in Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/how-does-abilityscore-track-progress-in-a-child-with-conduct-dissocial-disorder
- How Conduct-Dissocial Disorder Is Assessed in a Young Child: https://pinnacleblooms.org/ask/how-is-conduct-dissocial-disorder-assessed-in-a-young-child
- How is Conduct-Dissocial Disorder assessed in children under 7?: https://pinnacleblooms.org/ask/how-is-conduct-dissocial-disorder-assessed-in-children-under-7
- What an AbilityScore Band Means for Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-0-100-mean-for-a-child-with-conduct-dissocial-disorder
- AbilityScore 100–200 for Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-100-200-mean-for-a-child-with-conduct-dissocial-disorder
- What an AbilityScore of 200–300 Means in Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-200-300-mean-for-a-child-with-conduct-dissocial-disorder
- What does an AbilityScore of 300–400 mean for a child with Conduct-Dissocial Disorder?: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-300-400-mean-for-a-child-with-conduct-dissocial-disorder
- AbilityScore 400–500 and Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-400-500-mean-for-a-child-with-conduct-dissocial-disorder
- What an AbilityScore of 500–600 means for Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-500-600-mean-for-a-child-with-conduct-dissocial-disorder
- AbilityScore 600–700 in Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-600-700-mean-for-a-child-with-conduct-dissocial-disorder
- What a 700–800 AbilityScore® Means in Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/what-does-an-abilityscore-of-700-800-mean-for-a-child-with-conduct-dissocial-disorder

### Explore therapy & support
- Supporting a Child with Conduct-Dissocial Disorder Day to Day: https://pinnacleblooms.org/ask/as-a-grandparent-or-caregiver-how-can-i-support-a-child-with-conduct-dissocial-disorder-day-to-day
- Can a child with Conduct-Dissocial Disorder attend a mainstream school?: https://pinnacleblooms.org/ask/can-a-child-with-conduct-dissocial-disorder-attend-a-mainstream-school
- Can a Child with Conduct-Dissocial Disorder Attend a Regular School?: https://pinnacleblooms.org/ask/can-a-child-with-conduct-dissocial-disorder-attend-a-regular-school
- Can a child with Conduct-Dissocial Disorder live independently?: https://pinnacleblooms.org/ask/can-a-child-with-conduct-dissocial-disorder-grow-up-to-live-independently
- Helping a child with Conduct-Dissocial Disorder take part and learn: https://pinnacleblooms.org/ask/how-can-a-classroom-teacher-help-a-child-with-conduct-dissocial-disorder-take-part-and-learn
- How a district early intervention programme can identify and support children under 7 with Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/how-can-a-district-early-intervention-programme-identify-and-support-children-under-7-with-conduct-dissocial-disorder
- Including a Child with Conduct-Dissocial Disorder in Class: https://pinnacleblooms.org/ask/how-can-a-teacher-include-and-support-a-young-child-with-conduct-dissocial-disorder-in-a-mainstream-classroom
- How to Support Social Development in Conduct-Dissocial Disorder: https://pinnacleblooms.org/ask/how-can-we-support-social-development-in-a-child-with-conduct-dissocial-disorder
- How therapy helps a child with Conduct-Dissocial Disorder progress: https://pinnacleblooms.org/ask/how-does-therapy-help-a-child-with-conduct-dissocial-disorder-make-progress
- How Is Conduct-Dissocial Disorder Diagnosed in a Child?: https://pinnacleblooms.org/ask/how-is-conduct-dissocial-disorder-diagnosed-in-a-child
- How Conduct-Dissocial Disorder Is Supported Through Therapy: https://pinnacleblooms.org/ask/how-is-conduct-dissocial-disorder-supported-through-therapy
- Conduct-Dissocial Disorder: what to do after the AbilityScore: https://pinnacleblooms.org/ask/my-child-with-conduct-dissocial-disorder-has-an-abilityscore-of-0-100-what-should-we-do-next

### At home & in everyday life
- How to Support a Child with Conduct-Dissocial Disorder at Home: https://pinnacleblooms.org/ask/how-can-i-support-my-child-with-conduct-dissocial-disorder-at-home