ICD-10 Code G47.54 – Parasomnia in conditions classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G47.54 – Parasomnia in conditions classified elsewhere
What it is
This code identifies parasomnia episodes that occur because of another documented condition. Use it when the sleep disturbance is secondary, not a stand-alone parasomnia diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Common parasomnia patterns include abnormal behaviors during sleep, such as arousals, confusion, or unwanted movements, when linked to an underlying disorder.
When to use this code
Use G47.54 when the record clearly states parasomnia is due to another condition and the causal condition is documented. It may apply when sleep-related behaviors are secondary to a known neurologic, psychiatric, or medical disorder. Code the underlying condition first when instructed by documentation or coding guidance.
Do not use for
Do not use this code for primary parasomnias without an identified cause. Check documentation if the chart only describes insomnia, sleepwalking, or other sleep disturbance without a linked condition.
Coding tip
Always verify the documented cause of the parasomnia before assigning G47.54.