Dissociative Disorders – Definitions & ICD 11 Codes

Definition of Dissociative Disorders: Dissociative disorders are characterised by involuntary disruption or discontinuity in the normal integration of one or more of the following: identity, sensations, perceptions, affects, thoughts, memories, control over bodily movements, or behaviour. Disruption or discontinuity may be complete, but is more commonly partial, and can vary from day to day or even from hour to hour. The symptoms of dissociative disorders are not due the direct effects of a medication or substance, including withdrawal effects, are not better explained by another Mental, behavioural, or neurodevelopmental disorder, a Sleep-wake disorder, a Disease of the nervous system or other health condition, and are not part of an accepted cultural, religious, or spiritual practice. Dissociative symptoms in dissociative disorders are sufficiently severe to result in significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

Coded Elsewhere:

Dissociative neurological symptom disorder

Definition of Dissociative neurological symptom disorder: Dissociative neurological symptom disorder is characterised by the presentation of motor, sensory, or cognitive symptoms that imply an involuntary discontinuity in the normal integration of motor, sensory, or cognitive functions and are not consistent with a recognised disease of the nervous system, other mental or behavioural disorder, or other medical condition. The symptoms do not occur exclusively during another dissociative disorder and are not due to the effects of a substance or medication on the central nervous system, including withdrawal effects, or a Sleep-Wake disorder.

ICD 11 Code For Dissociative neurological symptom disorder

  6B60  Dissociative neurological symptom disorder

Exclusions:

6B60.0 Dissociative neurological symptom disorder with visual disturbance

Definition of Dissociative neurological symptom disorder with visual disturbance: Dissociative neurological symptom disorder, with visual disturbance is characterised by visual symptoms such as blindness, tunnel vision, diplopia, visual distortions or hallucinations that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.1 Dissociative neurological symptom disorder with auditory disturbance

Definition of Dissociative neurological symptom disorder with auditory disturbance: Dissociative neurological symptom disorder, with auditory disturbance is characterised by auditory symptoms such as loss of hearing or auditory hallucinations that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.2 Dissociative neurological symptom disorder with vertigo or dizziness

Definition of Dissociative neurological symptom disorder with vertigo or dizziness: Dissociative neurological symptom disorder, with vertigo or dizziness is characterised by a sensation of spinning while stationary (vertigo) or dizziness that is not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and does not occur exclusively during another dissociative disorder.

6B60.3 Dissociative neurological symptom disorder with other sensory disturbance

Definition of Dissociative neurological symptom disorder with other sensory disturbance: Dissociative neurological symptom disorder, with other sensory disturbance is characterised by sensory symptoms not identified in other specific categories in this grouping such as numbness, tightness, tingling, burning, pain, or other symptoms related to touch, smell, taste, balance, proprioception, kinesthesia, or thermoception. The symptoms are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.4 Dissociative neurological symptom disorder with non-epileptic seizures

Definition of Dissociative neurological symptom disorder with non-epileptic seizures: Dissociative neurological symptom disorder, with non-epileptic seizures is characterised by a symptomatic presentation of seizures or convulsions that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.5 Dissociative neurological symptom disorder with speech disturbance

Definition of Dissociative neurological symptom disorder with speech disturbance: Dissociative neurological symptom disorder, with speech disturbance is characterised by symptoms such as difficulty with speaking (dysphonia), loss of the ability to speak (aphonia) or difficult or unclear articulation of speech (dysarthria) that are not consistent with a recognised disease of the nervous system, a neurodevelopmental or neurocognitive disorder, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.6 Dissociative neurological symptom disorder with paresis or weakness

Definition of Dissociative neurological symptom disorder with paresis or weakness: Dissociative neurological symptom disorder, with paresis or weakness is characterised by a difficulty or inability to intentionally move parts of the body or to coordinate movements that is not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and does not occur exclusively during another dissociative disorder.

6B60.7 Dissociative neurological symptom disorder with gait disturbance

Definition of Dissociative neurological symptom disorder with gait disturbance: Dissociative neurological symptom disorder, with gait disturbance is characterised by symptoms involving the individual’s ability or manner of walking, including ataxia and the inability to stand unaided, that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.8 Dissociative neurological symptom disorder with movement disturbance

Definition of Dissociative neurological symptom disorder with movement disturbance: Dissociative neurological symptom disorder, with movement disturbance is characterised by symptoms such as chorea, myoclonus, tremor, dystonia, facial spasm, parkinsonism, or dyskinesia that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.80 Dissociative neurological symptom disorder with chorea

Definition of Dissociative neurological symptom disorder with chorea: Dissociative neurological symptom disorder, with chorea is characterised by irregular, non-repetitive, brief, jerky, flowing movements that move randomly from one part of the body to another that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.81 Dissociative neurological symptom disorder with myoclonus

Definition of Dissociative neurological symptom disorder with myoclonus: Dissociative neurological symptom disorder, with myoclonus is characterised by sudden rapid jerks that may be focal, multifocal or generalised that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.82 Dissociative neurological symptom disorder with tremor

Definition of Dissociative neurological symptom disorder with tremor: Dissociative neurological symptom disorder, with tremor is characterised by involuntary oscillation of a body part that is not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and does not occur exclusively during another dissociative disorder.

6B60.83 Dissociative neurological symptom disorder with dystonia

Definition of Dissociative neurological symptom disorder with dystonia: Dissociative neurological symptom disorder, with dystonia is characterised by sustained muscle contractions that frequently causing twisting and repetitive movements or abnormal postures that are not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and do not occur exclusively during another dissociative disorder.

6B60.84 Dissociative neurological symptom disorder with facial spasm

Definition of Dissociative neurological symptom disorder with facial spasm: Dissociative neurological symptom disorder, with facial spasm is characterised by involuntary muscle contractions or twitching of the face that is not consistent with a recognised disease of the nervous system, other mental, behavioural or neurodevelopmental disorder, or other medical condition and does not occur exclusively during another dissociative disorder.

6B60.85 Dissociative neurological symptom disorder with Parkinsonism

Definition of Dissociative neurological symptom disorder with Parkinsonism: Dissociative neurological symptom disorder, with Parkinsonism is characterised by a symptomatic presentation of a Parkinson-like syndrome in the absence of confirmed Parkinson disease that does not occur exclusively during another mental, behavioural or neurodevelopmental disorder, other medical condition, or another dissociative disorder. Dissociative neurological symptom disorder, with Parkinsonism can be distinguished from Parkinson disease by features such as abrupt onset, early disability, bilateral shaking and slowness, nondecremental slowness when performing repetitive movements, voluntary resistance against passive movement without cogwheel rigidity, distractability, ‘give-way’ weakness, stuttering speech, bizarre gait, and a variety of behavioural symptoms.

6B60.8Y Dissociative neurological symptom disorder with other specified movement disturbance

6B60.8Z Dissociative neurological symptom disorder with unspecified movement disturbance

6B60.9 Dissociative neurological symptom disorder with cognitive symptoms

Definition of Dissociative neurological symptom disorder with cognitive symptoms: Dissociative neurological symptom disorder, with cognitive symptoms is characterised by impaired cognitive performance in memory, language or other cognitive domains that is internally inconsistent and not consistent with a recognised disease of the nervous system, a neurodevelopmental or neurocognitive disorder, other mental, behavioural or neurodevelopmental disorder, or another medical condition and does not occur exclusively during another dissociative disorder.

Exclusions:

  • Dissociative amnesia (6B61)

6B60.Y Dissociative neurological symptom disorder with other specified symptoms

6B60.Z Dissociative neurological symptom disorder with unspecified symptoms

Dissociative amnesia

Definition of Dissociative amnesia: Dissociative amnesia is characterised by an inability to recall important autobiographical memories, typically of recent traumatic or stressful events, that is inconsistent with ordinary forgetting. The amnesia does not occur exclusively during another dissociative disorder and is not better explained by another mental, behavioural or neurodevelopmental disorder. The amnesia is not due to the direct effects of a substance or medication on the central nervous system, including withdrawal effects, and is not due to a disease of the nervous system or to head trauma. The amnesia results in significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

ICD 11 Code For Dissociative amnesia

  6B61  Dissociative amnesia

Exclusions:

  • amnesia NOS (MB21.1)
  • Amnestic disorder due to use of alcohol (6D72.10)
  • Anterograde amnesia (MB21.10)
  • Retrograde amnesia (MB21.11)
  • nonalcoholic organic amnesic syndrome (6D72.0)
  • postictal amnesia in epilepsy (BlockL1‑8A6)

6B61.0 Dissociative amnesia with dissociative fugue

Definition of Dissociative amnesia with dissociative fugue: Dissociative amnesia with dissociative fugue is characterised by all of the features of Dissociative Amnesia, accompanied by dissociative fugue, i.e., a loss of a sense of personal identity and sudden travel away from home, work, or significant others for an extended period of time (days or weeks). A new identity may be assumed.

Exclusions:

  • postictal fugue in epilepsy (BlockL1‑8A6)

6B61.1 Dissociative amnesia without dissociative fugue

Definition of Dissociative amnesia without dissociative fugue: Dissociative amnesia without dissociative fugue is characterised by all of the features of dissociative amnesia occurring in the absence of symptoms of dissociative fugue.

6B61.Z Dissociative amnesia unspecified

Trance disorder

Definition of Trance disorder: Trance disorder is characterised by trance states in which there is a marked alteration in the individual’s state of consciousness or a loss of the individual’s customary sense of personal identity in which the individual experiences a narrowing of awareness of immediate surroundings or unusually narrow and selective focusing on environmental stimuli and restriction of movements, postures, and speech to repetition of a small repertoire that is experienced as being outside of one’s control. The trance state is not characterised by the experience of being replaced by an alternate identity. Trance episodes are recurrent or, if the diagnosis is based on a single episode, the episode has lasted for at least several days. The trance state is involuntary and unwanted and is not accepted as a part of a collective cultural or religious practice. The symptoms do not occur exclusively during another dissociative disorder and are not better explained by another mental, behavioural or neurodevelopmental disorder. The symptoms are not due to the direct effects of a substance or medication on the central nervous system, including withdrawal effects, exhaustion, or to hypnagogic or hypnopompic states, and are not due to a disease of the nervous system, head trauma, or a sleep-wake disorder. The symptoms result in significant distress or significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

ICD 11 Code For Trance disorder

  6B62  Trance disorder

Possession trance disorder

Definition of Possession trance disorder: Possession trance disorder is characterised by trance states in which there is a marked alteration in the individual’s state of consciousness and the individual’s customary sense of personal identity is replaced by an external ‘possessing’ identity and in which the individual’s behaviours or movements are experienced as being controlled by the possessing agent. Possession trance episodes are recurrent or, if the diagnosis is based on a single episode, the episode has lasted for at least several days. The possession trance state is involuntary and unwanted and is not accepted as a part of a collective cultural or religious practice. The symptoms do not occur exclusively during another dissociative disorder and are not better explained by another mental, behavioural or neurodevelopmental disorder. The symptoms are not due to the direct effects of a substance or medication on the central nervous system, including withdrawal effects, exhaustion, or to hypnagogic or hypnopompic states, and are not due to a disease of the nervous system or a sleep-wake disorder. The symptoms result in significant distress or significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

ICD 11 Code For Possession trance disorder

  6B63  Possession trance disorder

Exclusions:

Dissociative identity disorder

Definition of Dissociative identity disorder: Dissociative identity disorder is characterised by disruption of identity in which there are two or more distinct personality states (dissociative identities) associated with marked discontinuities in the sense of self and agency. Each personality state includes its own pattern of experiencing, perceiving, conceiving, and relating to self, the body, and the environment. At least two distinct personality states recurrently take executive control of the individual’s consciousness and functioning in interacting with others or with the environment, such as in the performance of specific aspects of daily life such as parenting, or work, or in response to specific situations (e.g., those that are perceived as threatening). Changes in personality state are accompanied by related alterations in sensation, perception, affect, cognition, memory, motor control, and behaviour. There are typically episodes of amnesia, which may be severe. The symptoms are not better explained by another mental, behavioural or neurodevelopmental disorder and are not due to the direct effects of a substance or medication on the central nervous system, including withdrawal effects, and are not due to a disease of the nervous system or a sleep-wake disorder. The symptoms result in significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

ICD 11 Code For Dissociative identity disorder

  6B64  Dissociative identity disorder

Partial dissociative identity disorder

Definition of Partial dissociative identity disorder: Partial dissociative identity disorder is characterised by disruption of identity in which there are two or more distinct personality states (dissociative identities) associated with marked discontinuities in the sense of self and agency. Each personality state includes its own pattern of experiencing, perceiving, conceiving, and relating to self, the body, and the environment. One personality state is dominant and normally functions in daily life, but is intruded upon by one or more non-dominant personality states (dissociative intrusions). These intrusions may be cognitive, affective, perceptual, motor, or behavioural. They are experienced as interfering with the functioning of the dominant personality state and are typically aversive. The non-dominant personality states do not recurrently take executive control of the individual’s consciousness and functioning, but there may be occasional, limited and transient episodes in which a distinct personality state assumes executive control to engage in circumscribed behaviours, such as in response to extreme emotional states or during episodes of self-harm or the reenactment of traumatic memories. The symptoms are not better explained by another mental, behavioural or neurodevelopmental disorder and are not due to the direct effects of a substance or medication on the central nervous system, including withdrawal effects, and are not due to a disease of the nervous system or a sleep-wake disorder. The symptoms result in significant impairment in personal, family, social, educational, occupational or other important areas of functioning.

ICD 11 Code For Partial dissociative identity disorder

  6B65  Partial dissociative identity disorder

Depersonalization-derealization disorder

Definition of Depersonalization-derealization disorder: Depersonalization-derealization disorder is characterised by persistent or recurrent experiences of depersonalization, derealization, or both. Depersonalization is characterised by experiencing the self as strange or unreal, or feeling detached from, or as though one were an outside observer of, one’s thoughts, feelings, sensations, body, or actions. Derealization is characterised by experiencing other persons, objects, or the world as strange or unreal (e.g., dreamlike, distant, foggy, lifeless, colourless, or visually distorted) or feeling detached from one’s surroundings. During experiences of depersonalization or derealization, reality testing remains intact. The experiences of depersonalization or derealization do not occur exclusively during another dissociative disorder and are not better explained by another mental, behavioural or neurodevelopmental disorder. The experiences of depersonalization or derealization are not due to the direct effects of a substance or medication on the central nervous system, including withdrawal effects, and are not due to a disease of the nervous system or to head trauma. The symptoms result in significant distress or impairment in personal, family, social, educational, occupational or other important areas of functioning.

ICD 11 Code For Depersonalization-derealization disorder

  6B66  Depersonalization-derealization disorder

Other specified dissociative disorders

ICD 11 Code For Other specified dissociative disorders

  6B6Y  Other specified dissociative disorders

Dissociative disorders unspecified

ICD 11 Code For Dissociative disorders unspecified

  6B6Z  Dissociative disorders unspecified

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