ICD-10-CM 2027
ICD-10 code for neonatal excessive hemolysis
From the official ICD-10-CM alphabetic index entry “Hemolysis › neonatal (excessive)”. Page updated September 29, 2026.
About coding neonatal excessive hemolysis
The ICD-10-CM code for neonatal excessive hemolysis is P58.9 (Neonatal jaundice due to excessive hemolysis, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on P58.9.
Within P58, choose P58.9 (excessive hemolysis, unspecified) only when documentation doesn't support a more specific option: bruising (P58.0), bleeding (P58.1), infection (P58.2), polycythemia (P58.3), drugs or toxins transmitted from mother or given to newborn (P58.4), swallowed maternal blood (P58.5) and other specified excessive hemolysis (P58.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 794 (Neonate with Other Significant Problems, relative weight 1.4935), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific neonatal excessive hemolysis codes (official index)
- specified NEC P58.8 — Neonatal jaundice due to other specified excessive hemolysis
Common questions about neonatal excessive hemolysis ICD-10 codes
What is the ICD-10 code for neonatal excessive hemolysis?
- P58.9 — Neonatal jaundice due to excessive hemolysis, unspecified. More specific codes apply when the documentation supports them: P58.8.
Is P58.9 billable?
- Yes. P58.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can P58.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict P58.9 as a principal diagnosis.
Is P58.9 a CC or MCC?
- No. P58.9 is neither a CC nor an MCC under MS-DRG v44.0.