ICD-10-CM Code G47.21
Circadian rhythm sleep disorder, delayed sleep phase type
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.G47.21 is a billable ICD code used to specify a diagnosis of circadian rhythm sleep disorder, delayed sleep phase type. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code G4721 is used to code Delayed sleep phase disorder
Delayed sleep-phase disorder (DSPD), also known as delayed sleep-phase syndrome (DSPS) or delayed sleep-phase type (DSPT), and in the 2014 revision of the International Classification of Sleep Disorders (ISCD-3), delayed sleep-wake phase disorder, is a dysregulation of a person's circadian rhythm (biological clock), compared to the general population and relative to societal norms. The disorder affects the timing of sleep, peak period of alertness, the core body temperature rhythm, hormonal and other daily cycles. People with DSPD generally fall asleep some hours after midnight and have difficulty waking up in the morning. They probably have a circadian period significantly longer than 24 hours.
| Specialty: | Sleep Medicine |
| MeSH Code: | D021081 |
| ICD 9 Code: | 327.31 |
Coding Notes for G47.21 Info for medical coders on how to properly use this ICD-10 code
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Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive. - Delayed sleep phase syndrome
MS-DRG Mapping
- DRG Group #011-013 - Tracheostomy for face, mouth and neck diagnoses with MCC.
- DRG Group #011-013 - Tracheostomy for face, mouth and neck diagnoses with CC.
- DRG Group #011-013 - Tracheostomy for face, mouth and neck diagnoses without CC or MCC.
- DRG Group #091-093 - Other disorders of nervous system with MCC.
- DRG Group #091-093 - Other disorders of nervous system with CC.
- DRG Group #091-093 - Other disorders of nervous system without CC or MCC.
ICD-10-CM Alphabetical Index References for 'G47.21 - Circadian rhythm sleep disorder, delayed sleep phase type'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code G47.21. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 327.31 was previously used, G47.21 is the appropriate modern ICD10 code.
Parent Code: G47.2 - Circadian rhythm sleep disorders