2026 ICD-10-CM Diagnosis Code P55Hemolytic disease of newborn

ICD-10-CM Codes›P00–P96›P50-P61›P55

ICD-10-CM P55
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P55 is a non-billable ICD-10-CM category code for hemolytic disease of newborn, so it cannot be submitted on claims. Use a more specific code from this category instead, such as P55.0, P55.1, P55.8, and P55.9.

Code Identity

ICD-10-CM Code
P55
Billable Status
No — Non-Billable Category
Code Describes
Hemolytic disease of newborn
Chapter
P50-P61
Hemorrhagic and hematological disorders of newborn

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP50-P61Hemorrhagic and hematological disorders of newborn
CategoryP55Hemolytic disease of newborn
This CodeP55Hemolytic disease of newborn

Specific Coding for Hemolytic disease of newbornOverview

Non-specific codes like P55 require more characters. Use one of these billable codes instead:

  • Use P55.0 for Rh isoimmunization of newborn

  • Use P55.1 for ABO isoimmunization of newborn

  • Use P55.8 for Other hemolytic diseases of newborn

  • Use P55.9 for Hemolytic disease of newborn, unspecified

Patient EducationClinical

Blood Disorders

Your blood is living tissue made up of liquid and solids. The liquid part, called plasma, is made of water, salts and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells and platelets.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P55Overview

Is P55 (Hemolytic disease of newborn) a billable code?

No. This is a category header that groups the codes for hemolytic disease of newborn, and headers cannot be submitted on claims. Claims for hemolytic disease of newborn need a more specific code from this category, such as P55.0, P55.1, and P55.8.