F51
Header — not billableSleep disorders not due to a substance or known physiological condition
The ICD-10 code for sleep disorders not due to a substance or known physiological condition is F51.
F51 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 7 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
- organic sleep disorders (G47.-)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under F51
- F51.0Insomnia not due to a substance or known physiological conditionnon-billable header
- F51.1Hypersomnia not due to a substance or known physiological conditionnon-billable header
- F51.3Sleepwalking [somnambulism]
- F51.4Sleep terrors [night terrors]
- F51.5Nightmare disorder
- F51.8Other sleep disorders not due to a substance or known physiological condition
- F51.9Sleep disorder not due to a substance or known physiological condition, unspecified
Related codes in this category
- F50Eating disordersnon-billable header
- F52Sexual dysfunction not due to a substance or known physiological conditionnon-billable header
- F53Mental and behavioral disorders associated with the puerperium, not elsewhere classifiednon-billable header
- F54Psychological and behavioral factors associated with disorders or diseases classified elsewhere
- F55Abuse of non-psychoactive substancesnon-billable header
- F59Unspecified behavioral syndromes associated with physiological disturbances and physical factors
- F51Sleep disorders not due to a substance or known physiological conditionnon-billable header