F51 Sleep disorders not due to a substance or known physiol cond
ICD-10-CM category F51 sits in Chapter 5 (Mental, behavioral and neurodevelopmental disorders, F01-F99). It contains 15 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
F51.0 Insomnia not due to a substance or known physiol conditionF51.1 Hypersomnia not due to a substance or known physiol cond
Billable codes in F51
| Code | Description |
|---|---|
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 |
F51.11 | 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 |
Search within ICD-10-CM for F51 and related codes
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