G47.21 – Circadian rhythm sleep disorder, delayed sleep phase type
Coding Notes
Active
Billable, valid for HIPAA-covered transactions
Applicable To
Delayed sleep phase syndrome
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Sibling Codes
Parent Sibling Codes
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Code | Title |
---|---|
G00-G99 | Diseases of the nervous system (G00-G99) |
G40-G47 | Episodic and paroxysmal disorders (G40-G47) |
G47 | Sleep disorders |
G47.2 | Circadian rhythm sleep disorders |
G47.21 |
Circadian rhythm sleep disorder, delayed sleep phase type
Applicable to
Delayed sleep phase syndrome
|