P57 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
P57.0
Kernicterus due to isoimmunization
Billable
10
P57.8
Other specified kernicterus
Billable
10
P57.9
Kernicterus, unspecified
Billable