ICD-10 Code G47.5 – Parasomnia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G47.5 – Parasomnia
What it is
G47.5 identifies parasomnia, a group of sleep disorders marked by unusual behaviors, emotions, or movements during sleep, sleep transitions, or arousals. Use it when the documentation names parasomnia without a more specific subtype.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include abnormal sleep-related behaviors such as walking, talking, acting out dreams, or partial awakenings with confusion.
When to use this code
Use G47.5 when the provider diagnoses parasomnia and does not specify a more detailed category. It also fits charted sleep events that are clearly described as parasomnia-related but remain nonspecific. If the note names a distinct disorder, code that condition instead.
Do not use for
Do not use this code for insomnia, sleep apnea, or seizure disorders unless the provider documents parasomnia as the diagnosis. Check documentation if the sleep behavior is better explained by another condition.
Coding tip
Code the most specific sleep disorder documented, and use G47.5 only when parasomnia is the stated diagnosis or the chart lacks further detail.