2020 ICD-10-CM Diagnosis Code G47.2

Circadian rhythm sleep disorders

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • G47.2 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM G47.2 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G47.2 - other international versions of ICD-10 G47.2 may differ.
Applicable To
  • Disorders of the sleep wake schedule
  • Inversion of nyctohemeral rhythm
  • Inversion of sleep rhythm
The following code(s) above G47.2 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G47.2:
  • G00-G99
    2020 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the nervous system
  • G47
    ICD-10-CM Diagnosis Code G47

    Sleep disorders

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Sleep disorders
Clinical Information
  • A sleep disorder characterized by persistent sleep disruption (excessive sleepiness and/or insomnia) that is due to a conflict between the individual's internal sleep-wake system and the demands of his or her environment regarding the timing and duration of sleep.
  • Dyssomnias associated with disruption of the normal 24 hour sleep wake cycle secondary to travel (e.g., jet lag syndrome), shift work, or other causes.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to G47.2:

ICD-10-CM Codes Adjacent To G47.2
G47.00 …… unspecified
G47.01 …… due to medical condition
G47.09 Other insomnia
G47.1 Hypersomnia
G47.10 …… unspecified
G47.11 Idiopathic hypersomnia with long sleep time
G47.12 Idiopathic hypersomnia without long sleep time
G47.13 Recurrent hypersomnia
G47.14 …… due to medical condition
G47.19 Other hypersomnia
G47.2 Circadian rhythm sleep disorders
G47.20 Circadian rhythm sleep disorder, unspecified type
G47.21 Circadian rhythm sleep disorder, delayed sleep phase type
G47.22 Circadian rhythm sleep disorder, advanced sleep phase type
G47.23 Circadian rhythm sleep disorder, irregular sleep wake type
G47.24 Circadian rhythm sleep disorder, free running type
G47.25 Circadian rhythm sleep disorder, jet lag type
G47.26 Circadian rhythm sleep disorder, shift work type
G47.27 Circadian rhythm sleep disorder in conditions classified elsewhere
G47.29 Other circadian rhythm sleep disorder
G47.3 Sleep apnea

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.