Current
F51 — Sleep disorders not due to a substance or known physiological condition
Part of Chapter 5: Mental, Behavioral and Neurodevelopmental disorders , block Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59) .
Official Notes
Excludes2
organic sleep disorders ( G47 .-)
Child Codes
- F51.0 Insomnia not due to a substance or known physiological condition Has subcodes
- F51.1 Hypersomnia not due to a substance or known physiological condition Has subcodes
- F51.3 Sleepwalking [somnambulism] Billable
- F51.4 Sleep terrors [night terrors] Billable
- F51.5 Nightmare disorder Billable
- F51.8 Other sleep disorders not due to a substance or known physiological condition Billable
- F51.9 Sleep disorder not due to a substance or known physiological condition, unspecified Billable
Referenced By
Official notes on these codes cite F51.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS