P57.9 — Kernicterus, unspecified
P57.9 is a billable, specific ICD-10-CM code for kernicterus, unspecified. It is valid for submission on a claim.
Other codes that can never be billed with P57.9
These codes carry an Excludes1 note pointing at P57.9. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P57.9 alone.
- P59Neonatal jaundice from other and unspecified causes
Risk adjustment
P57.9 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 192 Cerebral Palsy, Except Quadriplegic0.314 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
How P57.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to P57.9.
- Encephalopathia hyperbilirubinemica, newborn
- Kernicterus of newborn(not due to isoimmunization)
- Encephalopathy›hyperbilirubinemic, newborn
- Jaundice›nuclear, newborn
Code history
P57.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share P57. If P57.9 is not quite right, the correct code is usually one of these.
Questions about P57.9
- Is P57.9 a billable ICD-10-CM code?
- Yes. P57.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does P57.9 sit in the tabular list?
- Certain conditions originating in the perinatal period (P00-P96), in the block Hemorrhagic and hematological disorders of newborn (P50-P61).