ICD-10-CM
ICD-10 code for Icterus gravis, newborn: P55.0
The ICD-10-CM index points "Icterus gravis, newborn" to P55.0, Rh isoimmunization of newborn. P55.0 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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