Parasomnia, unspecified

This code represents a sleep disorder characterized by undesirable physical events or experiences that occur during entry into sleep, within sleep, or during arousal from sleep. These events are not primarily disorders of the sleep-wake cycle or breathing, and their specific type has not been identified. Patients may experience abnormal behaviors, movements, emotions, perceptions, or dreams during sleep.

Use this code when a patient presents with symptoms indicative of a parasomnia, but the specific type (e.g., REM sleep behavior disorder, sleepwalking, sleep terrors) cannot be definitively diagnosed due to insufficient information or ongoing evaluation. Documentation should clearly state "parasomnia, unspecified" or describe parasomnia symptoms without a more specific diagnosis. This code is appropriate when a more precise ICD-10-CM code for a specific parasomnia is not supported by the clinical documentation.

• Avoid using this code if documentation supports a more specific parasomnia diagnosis (e.g., G47.51 for REM sleep behavior disorder).
• Ensure the medical record explicitly states that the type of parasomnia is unspecified or unknown.
• Consider querying the provider for further specificity if the documentation describes parasomnia symptoms but doesn't provide a definitive diagnosis.