Chapter 6: Mental, Behavioural or Neurodevelopmental Disorders
ICD-11 codes 6A00-6E8Z
Covers all mental health conditions including depression, anxiety, PTSD, bipolar disorder, schizophrenia, ADHD, autism spectrum disorder, substance use disorders, and personality disorders. ICD-11 aligns more closely with DSM-5 and introduces gaming disorder and complex PTSD.
6A00-6A0Z
Neurodevelopmental disorders
6A00Disorders of intellectual development
6A01Developmental speech or language disorders
6A02Autism spectrum disorder
6A03Developmental learning disorder
6A04Developmental motor coordination disorder
6A05Attention deficit hyperactivity disorder
6A06Stereotyped movement disorder
6A0YOther specified neurodevelopmental disorders
6A0ZNeurodevelopmental disorders, unspecified
6A20-6A2Z
Schizophrenia or other primary psychotic disorders
6A20Schizophrenia
6A21Schizoaffective disorder
6A22Schizotypal disorder
6A23Acute and transient psychotic disorder
6A24Delusional disorder
6A25Symptomatic manifestations of primary psychotic disorders
6A2YOther specified primary psychotic disorder
6A2ZSchizophrenia or other primary psychotic disorders, unspecified
6A40-6A4Z
Catatonia
6A60-6A6Z
Bipolar or related disorders
6A60-6A8Z
Mood disorders
6A70-6A7Z
Depressive disorders
6B00-6B0Z
Anxiety or fear-related disorders
6B20-6B2Z
Obsessive-compulsive or related disorders
6B40-6B4Z
Disorders specifically associated with stress
6B40Post traumatic stress disorder
6B41Complex post traumatic stress disorder
6B42Prolonged grief disorder
6B43Adjustment disorder
6B44Reactive attachment disorder
6B45Disinhibited social engagement disorder
6B4YOther specified disorders specifically associated with stress
6B4ZDisorders specifically associated with stress, unspecified
6B60-6B6Z
Dissociative disorders
6B60Dissociative neurological symptom disorder
6B61Dissociative amnesia
6B62Trance disorder
6B63Possession trance disorder
6B64Dissociative identity disorder
6B65Partial dissociative identity disorder
6B66Depersonalization-derealization disorder
6B6YOther specified dissociative disorders
6B6ZDissociative disorders, unspecified
6B80-6B8Z
Feeding or eating disorders
6C00-6C0Z
Elimination disorders
6C20-6C2Z
Disorders of bodily distress or bodily experience
6C40-6C4Z
Disorders due to substance use
6C40Disorders due to use of alcohol
6C41Disorders due to use of cannabis
6C42Disorders due to use of synthetic cannabinoids
6C43Disorders due to use of opioids
6C44Disorders due to use of sedatives, hypnotics or anxiolytics
6C45Disorders due to use of cocaine
6C46Disorders due to use of stimulants including amphetamines, methamphetamine or methcathinone
6C47Disorders due to use of synthetic cathinones
6C48Disorders due to use of caffeine
6C49Disorders due to use of hallucinogens
6C4ADisorders due to use of nicotine
6C4BDisorders due to use of volatile inhalants
6C4CDisorders due to use of MDMA or related drugs, including MDA
6C4DDisorders due to use of dissociative drugs including ketamine and phencyclidine [PCP]
6C4EDisorders due to use of other specified psychoactive substances, including medications
6C4FDisorders due to use of multiple specified psychoactive substances, including medications
6C4GDisorders due to use of unknown or unspecified psychoactive substances
6C4HDisorders due to use of non-psychoactive substances
6C4YOther specified disorders due to substance use
6C4ZDisorders due to substance use, unspecified
6C50-6C5Z
Disorders due to addictive behaviours
6C70-6C7Z
Impulse control disorders
6C90-6C9Z
Disruptive behaviour or dissocial disorders
6D10-6D11
Personality disorders and related traits
6D30-6D3Z
Paraphilic disorders
6D30Exhibitionistic disorder
6D31Voyeuristic disorder
6D32Pedophilic disorder
6D33Coercive sexual sadism disorder
6D34Frotteuristic disorder
6D35Other paraphilic disorder involving non-consenting individuals
6D36Paraphilic disorder involving solitary behaviour or consenting individuals
6D3ZParaphilic disorders, unspecified
6D50-6D5Z
Factitious disorders
6D70-6E0Z
Neurocognitive disorders
6D80-6D8Z
Dementia
6D80Dementia due to Alzheimer disease
6D81Dementia due to cerebrovascular disease
6D82Dementia due to Lewy body disease
6D83Frontotemporal dementia
6D84Dementia due to psychoactive substances including medications
6D85Dementia due to diseases classified elsewhere
6D86Behavioural or psychological disturbances in dementia
6D8YDementia, other specified cause
6D8ZDementia, unknown or unspecified cause
6E20-6E2Z
Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium
6E20Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium, without psychotic symptoms
6E21Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium, with psychotic symptoms
6E2ZMental or behavioural disorders associated with pregnancy, childbirth or the puerperium, unspecified
6E60-6E6Z
Secondary mental or behavioural syndromes associated with disorders or diseases classified elsewhere
6E60Secondary neurodevelopmental syndrome
6E61Secondary psychotic syndrome
6E62Secondary mood syndrome
6E63Secondary anxiety syndrome
6E64Secondary obsessive-compulsive or related syndrome
6E65Secondary dissociative syndrome
6E66Secondary impulse control syndrome
6E67Secondary neurocognitive syndrome
6E68Secondary personality change
6E69Secondary catatonia syndrome
6E6YOther specified secondary mental or behavioural syndrome
6E6ZSecondary mental or behavioural syndrome, unspecified
Frequently Asked Questions
What ICD-11 codes are in Chapter 6?
Chapter 6: Mental, Behavioural or Neurodevelopmental Disorders covers ICD-11 codes 6A00-6E8Z. It contains 24 code blocks with 159 top-level categories.
What conditions does ICD-11 Chapter 6 cover?
Covers all mental health conditions including depression, anxiety, PTSD, bipolar disorder, schizophrenia, ADHD, autism spectrum disorder, substance use disorders, and personality disorders. ICD-11 aligns more closely with DSM-5 and introduces gaming disorder and complex PTSD. This chapter includes codes from 6A00-6E8Z.
How is ICD-11 Chapter 6 different from ICD-10?
ICD-11 reorganized many chapters compared to ICD-10. Chapter 6 (Mental, Behavioural or Neurodevelopmental Disorders) may include conditions that were in different ICD-10 chapters, and some conditions previously here may have moved. ICD-11 also adds new chapters for sleep-wake disorders, sexual health, and traditional medicine that did not exist in ICD-10.
How many code blocks are in ICD-11 Chapter 6?
Chapter 6 has 24 code blocks: 6A00-6A0Z (Neurodevelopmental disorders), 6A20-6A2Z (Schizophrenia or other primary psychotic disorders), 6A40-6A4Z (Catatonia), 6A60-6A6Z (Bipolar or related disorders), and 20 more.
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