2020 ICD-10-CM Diagnosis Code P55.9

Hemolytic disease of newborn, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code Code on Newborn Record
  • P55.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM P55.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of P55.9 - other international versions of ICD-10 P55.9 may differ.
ICD-10-CM Coding Rules
  • P55.9 should be used on the newborn record - not on the maternal record.
The following code(s) above P55.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to P55.9:
  • P00-P96
    2020 ICD-10-CM Range P00-P96

    Certain conditions originating in the perinatal period

    • conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
    • Codes from this chapter are for use on newborn records only, never on maternal records
    Type 2 Excludes
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • tetanus neonatorum (A33)
    Certain conditions originating in the perinatal period
  • P50-P61
    2020 ICD-10-CM Range P50-P61

    Hemorrhagic and hematological disorders of newborn

    Type 1 Excludes
    • congenital stenosis and stricture of bile ducts (Q44.3)
    • Crigler-Najjar syndrome (E80.5)
    • Dubin-Johnson syndrome (E80.6)
    • Gilbert syndrome (E80.4)
    • hereditary hemolytic anemias (D55-D58)
    Hemorrhagic and hematological disorders of newborn
Approximate Synonyms
  • Hemolytic disease of fetus or newborn due to isoimmunization
  • Isoimmune hemolytic disease, fetus or newborn
  • Neonatal anemia
  • Newborn affected by late anemia
Clinical Information
  • A condition characterized by the abnormal presence of erythroblasts in the circulation of the fetus or newborns. It is a disorder due to blood group incompatibility, such as the maternal alloimmunization by fetal antigen rh factors leading to hemolysis of erythrocytes, hemolytic anemia (anemia, hemolytic), general edema (hydrops fetalis), and severe jaundice in newborn.
  • Hemolytic anemia of the fetus or newborn caused by transplacental transmission of maternally formed antibody, usually secondary to an incompatibility between the blood groups of mother and offspring.
ICD-10-CM P55.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert P55.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to P55.9:
  • Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) D64.9
    ICD-10-CM Diagnosis Code D64.9

    Anemia, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • congenital P61.4
      ICD-10-CM Diagnosis Code P61.4

      Other congenital anemias, not elsewhere classified

        2016 2017 2018 2019 2020 Billable/Specific Code Code on Newborn Record
      Applicable To
      • Congenital anemia NOS
      • due to isoimmunization NOS P55.9
    • erythroblastic
  • Disease, diseased - see also Syndrome
  • Erythroblastosis (fetalis) (newborn) P55.9
  • Isoimmunization NEC - see also Incompatibility
  • Jaundice (yellow) R17
    ICD-10-CM Diagnosis Code R17

    Unspecified jaundice

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • newborn P59.9
      ICD-10-CM Diagnosis Code P59.9

      Neonatal jaundice, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code Code on Newborn Record
      Applicable To
      • Neonatal physiological jaundice (intense)(prolonged) NOS

ICD-10-CM Codes Adjacent To P55.9
P54.3 Other neonatal gastrointestinal hemorrhage
P54.4 Neonatal adrenal hemorrhage
P54.5 Neonatal cutaneous hemorrhage
P54.6 Neonatal vaginal hemorrhage
P54.8 Other specified neonatal hemorrhages
P54.9 Neonatal hemorrhage, unspecified
P55 Hemolytic disease of newborn
P55.0 Rh isoimmunization of newborn
P55.1 ABO isoimmunization of newborn
P55.8 Other hemolytic diseases of newborn
P55.9 Hemolytic disease of newborn, unspecified
P56 Hydrops fetalis due to hemolytic disease
P56.0 Hydrops fetalis due to isoimmunization
P56.9 Hydrops fetalis due to other and unspecified hemolytic disease
P56.90 Hydrops fetalis due to unspecified hemolytic disease
P56.99 Hydrops fetalis due to other hemolytic disease
P57 Kernicterus
P57.0 Kernicterus due to isoimmunization
P57.8 Other specified kernicterus
P57.9 Kernicterus, unspecified
P58 Neonatal jaundice due to other excessive hemolysis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.