2026 ICD-10-CM Diagnosis Code P24.31Neonatal aspiration of milk and regurgitated food with respiratory symptoms

ICD-10-CM Codes›P00–P96›P19-P29›P24

ICD-10-CM P24.31
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P24.31 is a billable ICD-10-CM diagnosis code for neonatal aspiration of milk and regurgitated food with respiratory symptoms. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory perinatal condition.

Code Identity

ICD-10-CM Code
P24.31
Billable Status
Yes — Valid for Submission
Code Describes
Neonatal aspiration of milk and regurgitated food with respiratory symptoms
Short Description
Neonatal aspirat of milk and regurgitated food w resp symp
Parent Code
P24.3
Neonatal aspiration of milk and regurgitated food

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP19-P29Respiratory and cardiovascular disorders specific to the perinatal period
CategoryP24Neonatal aspiration
This CodeP24.31Neonatal aspiration of milk and regurgitated food with respiratory symptoms

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Aspirated gastric contents in lower respiratory tract
  • Aspiration into trachea
  • Aspiration of gastric contents into bronchus
  • Aspiration of gastric contents into larynx
  • Aspiration of gastric contents into nasopharynx
  • Aspiration of gastric contents into pharynx
  • Aspiration of gastric contents into respiratory tract
  • Aspiration of gastric contents into trachea
  • Aspiration pneumonitis caused by regurgitated food

Tabular List NotesGuidance

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

Inclusion Terms

  • Neonatal aspiration of milk and regurgitated food with pneumonia
  • Neonatal aspiration of milk and regurgitated food with pneumonitis

Use Additional Code

  • code to identify any secondary pulmonary hypertension, if applicable I27.2

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Aspiration
      • milk (newborn) (without respiratory symptoms)
        • with
          • pneumonia (pneumonitis)
    • Aspiration
      • milk (newborn) (without respiratory symptoms)
        • with
          • respiratory symptoms
    • Aspiration
      • vomitus
        • newborn (without respiratory symptoms)
          • with
            • pneumonia (pneumonitis)
    • Aspiration
      • vomitus
        • newborn (without respiratory symptoms)
          • with
            • respiratory symptoms
    • Pneumonia(acute) (double) (migratory) (purulent) (septic) (unresolved)
      • aspiration
        • newborn
          • milk
    • Pneumonia(acute) (double) (migratory) (purulent) (septic) (unresolved)
      • aspiration
        • newborn
          • food (regurgitated)
    • Pneumonia(acute) (double) (migratory) (purulent) (septic) (unresolved)
      • aspiration
        • newborn
          • stomach contents

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PNL006
Respiratory perinatal condition
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Lung Diseases

When you breathe, your lungs take in oxygen from the air and deliver it to the bloodstream. The cells in your body need oxygen to work and grow. During a normal day, you breathe nearly 25,000 times. People with lung disease have difficulty breathing. Millions of people in the U.S. have lung disease.

Read the full article at MedlinePlus

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

Convert P24.31 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
770.86 Stomach cont asp w resp
Exact Match The mapping is direct, with no qualifiers.

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 P24.31Overview

Is P24.31 (Neonatal aspiration of milk and regurgitated food) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neonatal aspiration of milk and regurgitated food with respiratory symptoms on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of P24.31?

Under the General Equivalence Mappings, neonatal aspiration of milk and regurgitated food with respiratory symptoms converts to ICD-9-CM 770.86 (stomach cont asp w resp). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.