Sleep disorders not due to a substance or known physiological condition (F51)
Browse all the diagnosis codes used for sleep disorders not due to a substance or known physiological condition (f51). For easy navigation, the diagnosis codes are sorted in alphabetical order and grouped by sections. Each section is clearly marked with its description, and the corresponding three-digit code range. This format makes it simple to browse diagnosis codes in this chapter or section and find what you're looking for. We've also added green checkmark icons to label billable codes, and red warning icons for non-billable ones. This makes it easy to identify which codes can be billed.
Instructional Notations
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- organic sleep disorders G47
Mental and behavioural disorders (F01–F99)
Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59)
F51 Sleep disorders not due to a substance or known physiological condition
F51.0 Insomnia not due to a substance or known physiological condition
- F51.01 Primary insomnia
- F51.02 Adjustment insomnia
- F51.03 Paradoxical insomnia
- F51.04 Psychophysiologic insomnia
- F51.05 Insomnia due to other mental disorder
- F51.09 Other insomnia not due to a substance or known physiological condition
F51.1 Hypersomnia not due to a substance or known physiological condition
- F51.11 Primary hypersomnia
- F51.12 Insufficient sleep syndrome
- F51.13 Hypersomnia due to other mental disorder
- F51.19 Other hypersomnia not due to a substance or known physiological condition
- F51.3 Sleepwalking [somnambulism]
- F51.4 Sleep terrors [night terrors]
- F51.5 Nightmare disorder
- F51.8 Other sleep disorders not due to a substance or known physiological condition
- F51.9 Sleep disorder not due to a substance or known physiological condition, unspecified
Sleep disorders not due to a substance or known physiological condition (F51)