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G47.2

G47.2: Circadian rhythm sleep disorders

Non-billable headerICD-10-CM

G47.2 is a non-billable header ICD-10-CM code for circadian rhythm sleep disorders. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Disorders of the sleep wake schedule
  • Inversion of nyctohemeral rhythm
  • Inversion of sleep rhythm

Excludes2 inherited from the categories above G47.2

Not part of this code, but both may be coded when both are present.

Written on G47: Sleep disorders

  • nightmares (F51.5)
  • nonorganic sleep disorders (F51.-)
  • sleep terrors (F51.4)
  • sleepwalking (F51.3)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead G47.2

9 child codes. Green means billable.

Other codes under G47

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.