G47.21
BillableCircadian rhythm sleep disorder, delayed sleep phase type
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A sleep disorder where a person's sleep naturally occurs much later than the conventional bedtime, making it difficult to fall asleep at normal hours.
Coding Tips
- •Document the typical sleep onset time and wake time to support the diagnosis
- •Confirm this is a persistent pattern, not occasional late nights
Code Hierarchy
└G47Sleep disorders└G47.2Circadian rhythm sleep disorders└G47.21Circadian rhythm sleep disorder, delayed sleep phase type
└G47.21Circadian rhythm sleep disorder, delayed sleep phase type