ICD-10 Code G47.26 – Circadian rhythm sleep disorder, shift work type (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G47.26 – Circadian rhythm sleep disorder, shift work type
What it is
G47.26 identifies a sleep-wake disorder caused by a work schedule that overlaps the body’s natural sleep cycle. Use it when shift work leads to persistent difficulty sleeping or staying alert.
Clinical signs
Typical features include insomnia when trying to sleep after a shift and excessive sleepiness during work hours. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents a circadian rhythm sleep disorder specifically related to shift work. It fits patients with ongoing sleep disruption tied to rotating, night, or irregular shifts. Confirm the provider links the symptoms to the work schedule.
Do not use for
Do not use this code for general insomnia without a shift-work cause. Check documentation if the sleep problem is better explained by another sleep disorder or by a medical, psychiatric, or substance-related condition.
Coding tip
Look for explicit provider wording connecting the sleep complaint to shift work before assigning G47.26.