Circadian rhythm sleep disorder, unspecified type

This code represents a sleep-wake cycle disruption that is not otherwise specified. Patients experience insomnia, excessive sleepiness, or both, due to a mismatch between their endogenous circadian rhythm and external demands or environmental factors. This diagnosis indicates that the specific type of circadian rhythm sleep disorder (e.g., delayed sleep phase, jet lag, shift work) has not been determined or documented.

Use this code when documentation indicates a circadian rhythm sleep disorder but lacks specificity regarding the particular type. This is appropriate when the provider has diagnosed a general circadian rhythm sleep disorder without further identifying its specific presentation or cause. Supporting documentation should describe symptoms like chronic difficulty initiating or maintaining sleep, or excessive daytime sleepiness, linked to a disrupted sleep-wake schedule.

• Only use this code when the specific type of circadian rhythm sleep disorder is truly unspecified in the medical record.
• Query the provider for more specific documentation if possible (e.g., G47.21 for delayed sleep phase type, G47.22 for advanced sleep phase type).
• Do not use this code for transient sleep disturbances not related to a persistent circadian rhythm disruption.