F51.0
Non-billableInsomnia not due to a substance or known physiological condition
F51.0 is the ICD-10-CM code for Insomnia not due to a substance or known physiological condition. It is a non-billable category code — use a more specific child code such as F51.01 for billing.
F01-F99 Mental, Behavioral and Neurodevelopmental disorders
A condition of unsatisfactory quantity and/or quality of sleep, which persists for a considerable period of time, including difficulty falling asleep, difficulty staying asleep, or early final wakening. Insomnia is a common symptom of many mental and physical disorders, and should be classified here in addition to the basic disorder only if it dominates the clinical picture.
Excludes2 — not included here
- •alcohol related insomnia (F10.182, F10.282, F10.982)
- •drug-related insomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
- •insomnia NOS (G47.0-)
- •insomnia due to known physiological condition (G47.0-)
- •organic insomnia (G47.0-)
- •sleep deprivation (Z72.820)
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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