ICD-10-CM 2027
ICD-10 code for disturbance sleep
From the official ICD-10-CM alphabetic index entry “Sleep › disturbance”. Page updated September 29, 2026.
About coding disturbance sleep
The ICD-10-CM code for disturbance sleep is G47.9 (Sleep disorder, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on G47.9.
Within G47, choose G47.9 (Sleep disorder, unspecified) only when documentation doesn't support a more specific option: insomnia (G47.0), hypersomnia (G47.1), circadian rhythm sleep disorders (G47.2), sleep apnea (G47.3), Narcolepsy and cataplexy (G47.4), parasomnia (G47.5), sleep related movement disorders (G47.6) and other sleep disorders (G47.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 887 (Other Mental Disorder Diagnoses, relative weight 1.1139), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific disturbance sleep codes (official index)
- nonorganic origin F51.9 — Sleep disorder not due to a substance or known physiological condition, unspecified
Common questions about disturbance sleep ICD-10 codes
What is the ICD-10 code for disturbance sleep?
- G47.9 — Sleep disorder, unspecified. More specific codes apply when the documentation supports them: F51.9.
What is the ICD-10 code for nonorganic origin disturbance sleep?
- F51.9 — Sleep disorder not due to a substance or known physiological condition, unspecified.
Is G47.9 billable?
- Yes. G47.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can G47.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict G47.9 as a principal diagnosis.
Is G47.9 a CC or MCC?
- No. G47.9 is neither a CC nor an MCC under MS-DRG v44.0.