2017/18 ICD-10-CM Diagnosis Code G47.27

Circadian rhythm sleep disorder in conditions classified elsewhere

ICD-10-CM Coding Rules
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying condition
The following code(s) above G47.27 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 G47.27:
  • G00-G99
    2018 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 Non-Billable/Non-Specific Code
    Type 2 Excludes
    Sleep disorders
  • G47.2
    ICD-10-CM Diagnosis Code G47.2

    Circadian rhythm sleep disorders

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Disorders of the sleep wake schedule
    • Inversion of nyctohemeral rhythm
    • Inversion of sleep rhythm
    Circadian rhythm sleep disorders
ICD-10-CM G47.27 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert G47.27 to ICD-9-CM

Code History

Diagnosis Index entries containing back-references to G47.27:

ICD-10-CM Codes Adjacent To G47.27
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
G47.30 …… unspecified
G47.31 Primary central sleep apnea
G47.32 High altitude periodic breathing
G47.33 Obstructive sleep apnea (adult) (pediatric)
G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation
G47.35 Congenital central alveolar hypoventilation syndrome
G47.36 Sleep related hypoventilation in conditions classified elsewhere
G47.37 Central sleep apnea in conditions classified elsewhere

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