2026 ICD-10-CM Diagnosis Code P56Hydrops fetalis due to hemolytic disease

ICD-10-CM Codes›P00–P96›P50-P61›P56

ICD-10-CM P56
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P56 is a non-billable ICD-10-CM category code for hydrops fetalis due to hemolytic disease, so it cannot be submitted on claims. Use a more specific code from this category instead, such as P56.0, P56.90, and P56.99.

Code Identity

ICD-10-CM Code
P56
Billable Status
No — Non-Billable Category
Code Describes
Hydrops fetalis due to hemolytic disease
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
CategoryP56Hydrops fetalis due to hemolytic disease
This CodeP56Hydrops fetalis due to hemolytic disease

Specific Coding for Hydrops fetalis due to hemolytic diseaseOverview

Non-specific codes like P56 require more characters. Use one of these billable codes instead:

  • Use P56.0 for Hydrops fetalis due to isoimmunization

  • P56.9 for Hydrops fetalis due to other and unspecified hemolytic disease

  • Use P56.90 for Hydrops fetalis due to unspecified hemolytic disease

  • Use P56.99 for Hydrops fetalis due to other hemolytic disease

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • hydrops fetalis NOS P83.2

Patient EducationClinical

Edema

Edema means swelling caused by fluid in your body's tissues. It usually occurs in the feet, ankles and legs, but it can involve your entire body.

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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 P56Overview

Is P56 (Hydrops fetalis due to hemolytic disease) a billable code?

No. This is a category header that groups the codes for hydrops fetalis due to hemolytic disease, and headers cannot be submitted on claims. Claims for hydrops fetalis due to hemolytic disease need a more specific code from this category, such as P56.0, P56.90, and P56.99.