1. Repetitive, seemingly driven, and apparently purposeless motor behavior (e.g., hand shaking or waving, body rocking, head banging, self-biting, hitting own body).
2. The repetitive motor behavior interferes with social, academic, or other activities and may result in self-injury.
3. Onset is in the early developmental period.
4. The repetitive motor behavior is not attributable to the physiological effects of a substance or neurological condition and is not better explained by another neurodevelopmental or mental disorder (e.g., trichotillomania [hair-pulling disorder], obsessive-compulsive disorder).

Specify if:

With self-injuries behavior (or behavior that would result in an injury if preventive measures were not used).

Without self-injuries behavior

Specify if:

Associated with a known medical or genetic condition, neurodevelopmental disorder, or environmental factor.

(e.g. Lesch-Nyhan syndrome, intellectual disability [intellectual developmental disorder], intrauterine alcohol exposure).

Coding note: Use additional code to identify the associated medical or genetic condition or neurodevelopmental disorder.

Specify current severity:

Mild: symptoms are easily suppressed by sensory stimulus or distraction.

Moderate: Symptoms require explicit protective measures and behavioral modification.

Severe: Continuous monitoring and protective measures are required to prevent serious injury.

Recording Procedures

For stereotypic movement disorder that is associated with a known medical or genetic condition, neurodevelopmental disorder, or environmental factor, record stereotypic movement disorder associated with (name of condition, disorder, or factor) (e.g., stereotypic movement disorder associated with Lesch-Nyhan syndrome.)