ICD-10-CM diagnosis code
G47.24 Circadian rhythm sleep disorder, free running type
- Billable
- Yes, a complete code (FY2026)
- Category
- G47 Sleep disorders
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Other codes in G47
43 complete codes in this category.
- G47.14Hypersomnia due to medical condition
- G47.19Other hypersomnia
- G47.20Circadian rhythm sleep disorder, unspecified type
- G47.21Circadian rhythm sleep disorder, delayed sleep phase type
- G47.22Circadian rhythm sleep disorder, advanced sleep phase type
- G47.23Circadian rhythm sleep disorder, irregular sleep wake type
- G47.24Circadian rhythm sleep disorder, free running type
- G47.25Circadian rhythm sleep disorder, jet lag type
- G47.26Circadian rhythm sleep disorder, shift work type
- G47.27Circadian rhythm sleep disorder in conditions classified elsewhere
- G47.29Other circadian rhythm sleep disorder
- G47.30Sleep apnea, unspecified
Documentation tips
- Make sure the note supports every element of the title, “Circadian rhythm sleep disorder, free running type”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to G47.
The international WHO ICD-10 also has G47, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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