ICD-10-CM
ICD-10 code for Insomnia: G47.00
The ICD-10-CM index points "Insomnia" to G47.0 (Insomnia), a header that is not billable. When nothing more specific is documented, the billable code is G47.00, Insomnia, unspecified.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
- F51.02adjustment, Adjustment insomniaBillable
- F51.02adjustment disorder, Adjustment insomniaBillable
- Z73.819behavioral, of childhood, Behavioral insomnia of childhood, unspecified typeBillable
- Z73.819childhood, Behavioral insomnia of childhood, unspecified typeBillable
- F51.04chronic, Psychophysiologic insomniaBillable
- F51.04conditioned, Psychophysiologic insomniaBillable
- A81.83fatal familial (FFI), Fatal familial insomniaBillable
- F51.01idiopathic, Primary insomniaBillable
- F51.3learned, Sleepwalking [somnambulism]Billable
- F51.01nonorganic origin, Primary insomniaBillable
- F51.01not due to a substance or known physiological condition, Primary insomniaBillable
- F51.03paradoxical, Paradoxical insomniaBillable
- F51.01primary, Primary insomniaBillable
- F51.05psychiatric, Insomnia due to other mental disorderBillable
- F51.04psychophysiologic, Psychophysiologic insomniaBillable
- F51.05related to psychopathology, Insomnia due to other mental disorderBillable
- F51.02short-term, Adjustment insomniaBillable
- G47.09specified NEC, Other insomniaBillable
- F51.02stress-related, Adjustment insomniaBillable
- F51.02transient, Adjustment insomniaBillable
- F51.02without objective findings, Adjustment insomniaBillable
More specific codes in G47
A header groups codes and is not billed. A billable code is one you can report. Listed second marks a billable manifestation code (its CDC title says it is "classified elsewhere"): code the underlying disease or condition first, then this code.
- G47Sleep disordersHeader
- G47.0InsomniaHeader
- G47.00Insomnia, unspecifiedBillable
- G47.01Insomnia due to medical conditionBillable
- G47.09Other insomniaBillable
- G47.1HypersomniaHeader
- G47.10Hypersomnia, unspecifiedBillable
- G47.11Idiopathic hypersomnia with long sleep timeBillable
- G47.12Idiopathic hypersomnia without long sleep timeBillable
- G47.13Recurrent hypersomniaBillable
- G47.14Hypersomnia due to medical conditionBillable
- G47.19Other hypersomniaBillable
- G47.2Circadian rhythm sleep disordersHeader
- G47.20Circadian rhythm sleep disorder, unspecified typeBillable
- G47.21Circadian rhythm sleep disorder, delayed sleep phase typeBillable
- G47.22Circadian rhythm sleep disorder, advanced sleep phase typeBillable
- G47.23Circadian rhythm sleep disorder, irregular sleep wake typeBillable
- G47.24Circadian rhythm sleep disorder, free running typeBillable
- G47.25Circadian rhythm sleep disorder, jet lag typeBillable
- G47.26Circadian rhythm sleep disorder, shift work typeBillable
- G47.27Circadian rhythm sleep disorder in conditions classified elsewhereListed second
- G47.29Other circadian rhythm sleep disorderBillable
- G47.3Sleep apneaHeader
- G47.30Sleep apnea, unspecifiedBillable
- G47.31Primary central sleep apneaBillable
- G47.32High altitude periodic breathingBillable
- G47.33Obstructive sleep apnea (adult) (pediatric)Billable
- G47.34Idiopathic sleep related nonobstructive alveolar hypoventilationBillable
- G47.35Congenital central alveolar hypoventilation syndromeBillable
- G47.36Sleep related hypoventilation in conditions classified elsewhereListed second
- G47.37Central sleep apnea in conditions classified elsewhereListed second
- G47.39Other sleep apneaBillable
- G47.4Narcolepsy and cataplexyHeader
- G47.41NarcolepsyHeader
- G47.411Narcolepsy with cataplexyBillable
- G47.419Narcolepsy without cataplexyBillable
- G47.42Narcolepsy in conditions classified elsewhereHeader
- G47.421Narcolepsy in conditions classified elsewhere with cataplexyListed second
- G47.429Narcolepsy in conditions classified elsewhere without cataplexyListed second
- G47.5ParasomniaHeader
- G47.50Parasomnia, unspecifiedBillable
- G47.51Confusional arousalsBillable
- G47.52REM sleep behavior disorderBillable
- G47.53Recurrent isolated sleep paralysisBillable
- G47.54Parasomnia in conditions classified elsewhereListed second
- G47.59Other parasomniaBillable
- G47.6Sleep related movement disordersHeader
- G47.61Periodic limb movement disorderBillable
- G47.62Sleep related leg crampsBillable
- G47.63Sleep related bruxismBillable
- G47.69Other sleep related movement disordersBillable
- G47.8Other sleep disordersBillable
- G47.9Sleep disorder, unspecifiedBillable
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From G47.0. A note on a category applies to every code under it.
- F10.182, F10.282, F10.982Alcohol related insomnia
- F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982Drug-related insomnia
- F51.01Idiopathic insomnia
- F51.05Insomnia due to a mental disorder
- F51.0-Insomnia not due to a substance or known physiological condition
- F51.0-Nonorganic insomnia
- F51.01Primary insomnia
- G47.3-Sleep apnea
From G47. A note on a category applies to every code under it.
Related conditions
Related pages
- G47.00 code detailsNotes, nearby codes, CMS-HCC group
- Category G47.0Every code under it
- Chapter 6Diseases of the nervous system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Insomnia?
The ICD-10-CM index points "Insomnia" to G47.0 (Insomnia), a header that is not billable. When nothing more specific is documented, the billable code is G47.00, Insomnia, unspecified.
Is G47.00 billable?
Yes. G47.00 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to G47.00?
The CDC tabular list gives 12 Excludes2 notes (may be coded together when both are documented) for G47.00 and the categories above it. They are listed on this page.
What chapter is G47.00 in?
Chapter 6. Diseases of the nervous system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.