ICD-10 Code G47.0 – Insomnia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G47.0 – Insomnia
What it is
G47.0 identifies insomnia, a sleep disorder marked by difficulty falling asleep, staying asleep, or waking too early. Use it when the record documents insomnia as the diagnosis.
Clinical signs
Common features include trouble initiating sleep, frequent nighttime awakenings, or nonrestorative sleep. Daytime fatigue, poor concentration, and irritability may be present; clinical features vary, so refer to documentation.
When to use this code
Use G47.0 when the provider clearly diagnoses insomnia and it is the condition being addressed. It may be documented as primary insomnia, chronic insomnia, or insomnia disorder. If the note only mentions poor sleep without a diagnosis, check documentation.
Do not use for
Do not use this code for sleep loss caused by another documented condition, medication effect, or inadequate sleep opportunity unless insomnia is specifically diagnosed. Do not assume insomnia from a single complaint of sleeplessness.
Coding tip
Code the documented insomnia diagnosis, and verify whether it is primary or secondary to another condition.