ICD-10-CM · Chapter 5 · F01–F99
F51.09
Other insomnia not due to a substance or known physiological condition
Mental, behavioral and neurodevelopmental disorders
Quick facts
- Code
- F51.09
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 5 — Mental, behavioral and neurodevelopmental disorders
- Category
- F51 — Sleep disorders not due to a substance or known physiological condition
- Specificity
- 5 characters
How coders use this code
ICD-10-CM F51.09 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of other insomnia not due to a substance or known physiological condition. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in F51
- F51Sleep disorders not due to a substance or known physiological condition
- F51.0Insomnia not due to a substance or known physiological condition
- F51.01Primary insomnia
- F51.02Adjustment insomnia
- F51.03Paradoxical insomnia
- F51.04Psychophysiologic insomnia
- F51.05Insomnia due to other mental disorder
- F51.1Hypersomnia not due to a substance or known physiological condition
- F51.11Primary hypersomnia
- F51.12Insufficient sleep syndrome
- F51.13Hypersomnia due to other mental disorder
- F51.19Other hypersomnia not due to a substance or known physiological condition
- F51.3Sleepwalking [somnambulism]
- F51.4Sleep terrors [night terrors]
- F51.5Nightmare disorder
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