Hemolytic disease of newborn (P55) ICD-10-CM
The P55 code range covers hemolytic disease of newborn with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the P55 Range 5 codes · 4 billable
About the P55 Code Range
ICD-10 code P55 covers hemolytic disease of the newborn, a condition where a newborn’s red blood cells are destroyed due to immune reactions. This section includes specific codes for different immune causes leading to this disease.
Codes under this section specify the particular form of hemolytic disease. For example, P55.0 identifies Rh isoimmunization of the newborn, commonly known as rhesus isoimmunization, caused by antibodies like anti-D or anti-c attacking fetal red cells. The ICD-10 code for ABO isoimmunization (P55.1) is used when neonatal jaundice or anemia results from ABO blood group incompatibility between mother and baby. P55.8 refers to other types of hemolytic disease due to less common immune reactions, such as Kell or Duffy isoimmunization, including autoimmune hemolytic anemia forms. Lastly, P55.9 covers unspecified hemolytic disease cases, often used when the exact immune cause is unknown. These codes help medical coders accurately classify and document newborn hemolytic conditions based on their specific immune causes for treatment and billing purposes.
Questions About This Page
How many billable codes are in the P55 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the P55 range classify?
The range classifies hemolytic disease of newborn. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
