G47.21
BillableCircadian rhythm sleep disorder, delayed sleep phase type
Circadian rhythm sleep disorder, delayed sleep phase type
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Delayed sleep phase syndrome
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •nightmaresF51.5
- •nonorganic sleep disordersF51
- •sleep terrorsF51.4
- •sleepwalkingF51.3
Related Codes(8)
G47.20Circadian rhythm sleep disorder, unspecified 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 classd elswhr
G47.29Other circadian rhythm sleep disorder
Related Conditions
Also Known As / Clinical Terms(26)
SNOMED CT
UMLS
- Circadian rhythm sleep disorder, delayed sleep phaseC0393770
- Circadian rhythm sleep disorder, delayed sleep phase typeC0393770
- Delayed Sleep Phase SyndromeC0393770
- Delayed Sleep Phase Type Circadian Rhythm Sleep DisorderC0393770
- Delayed Sleep-Phase SyndromeC0393770
- Delayed Sleep-Phase SyndromesC0393770
- Delayed sleep phase syndromeC0393770
- Delayed sleep-wake phase disorderC0393770
- Sleep-wake schedule disorder, delayed phase typeC0393770
- Sleep-wake schedule disorder, delayed phase type (disorder)C0393770
- delayed phase sleep syndromeC0393770
- delayed sleep phase syndromeC0393770
Clinical Terms
- Sleep-wake schedule disorder, delayed phase type (disorder)
- Delayed Sleep Phase Syndrome
- Delayed Sleep-Phase Syndromes
- Delayed Sleep Phase Type Circadian Rhythm Sleep Disorder
- Sleep-wake schedule disorder, delayed phase type
- delayed phase sleep syndrome
- Circadian rhythm sleep disorder, delayed sleep phase
- Delayed Sleep-Phase Syndrome
- Delayed sleep-wake phase disorder
Frequently Asked Questions
What is the ICD-10 code for circadian rhythm sleep disorder, delayed sleep phase type?
The ICD-10-CM code for circadian rhythm sleep disorder, delayed sleep phase type is G47.21. The full clinical description is "Circadian rhythm sleep disorder, delayed sleep phase type". G47.21 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code G47.21 mean?
ICD-10-CM code G47.21 represents “Circadian rhythm sleep disorder, delayed sleep phase type”. It is classified under Chapter 6: Diseases of the Nervous System and is a billable/specific code that can be used on a claim.
Is G47.21 a billable code?
Yes, G47.21 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G47.21 in?
G47.21 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What SNOMED CT codes does G47.21 map to?
G47.21 maps to 1 SNOMED CT concept: 80623000. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G47.21?
G47.21 is linked to 1 UMLS Concept Unique Identifier: C0393770. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does G47.21 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like circadian rhythm sleep disorder, delayed sleep phase type affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of G47.21?
There is no direct ICD-11 mapping available for G47.21 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.