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    v1.0.28
    OpenPayerBilling CodesRespiratory and cardiovascular disorders specific to the perinatal periodICD-10-CM p19-metabolic-acidemia-in-newborn
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    ICD-10-CM Code For Metabolic Acidemia In Newborn: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group P19 includes metabolic acidemia and related acid–base disturbances identified in the newborn period, such as neonatal metabolic acidosis and other perinatal acidemia conditions that compromise acid-base balance. These ICD-10-CM diagnosis codes are used to document clinical scenarios where neonates present with abnormal arterial or venous blood pH, elevated acid load, or conditions leading to systemic acidemia, capturing severity and organ system involvement. Accurate coding within the ICD-10-CM P19 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM P19: Metabolic Acidemia In Newborn Overview

    The ICD-10-CM P19 group represents metabolic acidemia and related acid–base disturbances occurring in the newborn period, affecting neonatal metabolic and respiratory function. These codes target conditions where abnormal acid accumulation or impaired acid excretion leads to acidemia in the perinatal period. Accurate coding supports complete clinical documentation and helps ensure correct claim adjudication and appropriate reimbursement for neonatal care.

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    When to Use

    Codes from this group are used when a neonate is diagnosed with metabolic acidemia or a documented acid–base disturbance during the perinatal period based on laboratory values or clinical assessment. They are applied when the acidemia is the primary diagnosis or a significant comorbidity affecting neonatal management and resource use.

    ICD-10-CM Codes

    4 rows

    ICD-10-CM CodeDescription
    P19.0Metabolic acidemia in newborn first noted before onset of labor
    P19.1Metabolic acidemia in newborn first noted during labor
    P19.2Metabolic acidemia noted at birth
    P19.9Metabolic acidemia in newborn, unspecified

    DRG Codes

    1 rows

    DRG CodeDescription
    794Neonate with Other Significant Problems

    Typical Clinical Scenarios

    • A term newborn delivered after an uneventful pregnancy develops rapid shallow breathing, poor feeding, and lethargy within the first 24 hours of life. Initial blood gases show a high anion gap metabolic acidosis and serum lactate is markedly elevated, prompting neonatal intensive care admission for stabilization and evaluation for inborn errors of metabolism or perinatal hypoxia; a metabolic acidemia diagnosis is assigned to describe the acid-base disturbance requiring urgent management. Typical codes: P19.0.
    • A preterm infant in the NICU with prolonged respiratory support and episodes of apnea is noted on routine labs to have a chronic, low-grade metabolic acidosis with bicarbonate consistently below normal despite respiratory compensation; this is managed as an ongoing metabolic acidemia contributing to failure to thrive and electrolyte management. Typical codes: P19.1.
    • A newborn with severe perinatal asphyxia who required resuscitation at birth subsequently develops multisystem dysfunction, including persistent metabolic acidosis on serial arterial blood gases despite correction of ventilation, representing a metabolic acidemia as a complication of the primary hypoxic-ischemic event and influencing prognosis and supportive care. Typical codes: P19.2, P19.9.

    Related Codes

    P22-RESPIRATORY-DISTRESS-OF-NEWBORN

    ICD-10-CM Code For Respiratory Distress Of Newborn: Group Overview

    P23-CONGENITAL-PNEUMONIA

    ICD-10-CM Code For Congenital Pneumonia: Group Overview

    P24-NEONATAL-ASPIRATION

    ICD-10-CM Code For Neonatal Aspiration: Group Overview

    P25-INTERSTITIAL-EMPHYSEMA-AND-RELATED-CONDITIONS

    ICD-10-CM Code For Interstitial Emphysema And Related Conditions Originating In The Perinatal Period: Group Overview

    P26-PULMONARY-HEMORRHAGE-PERINATAL

    ICD-10-CM Code For Pulmonary Hemorrhage Originating In The Perinatal Period: Group Overview

    P27-CHRONIC-RESPIRATORY-DISEASE-PERINATAL

    ICD-10-CM Code For Chronic Respiratory Disease Originating In The Perinatal Period: Group Overview

    P28-OTHER-RESPIRATORY-PERINATAL-CONDITIONS

    ICD-10-CM Code For Other Respiratory Conditions Originating In The Perinatal Period: Group Overview

    P29-CARDIOVASCULAR-DISORDERS-PERINATAL

    ICD-10-CM Code For Cardiovascular Disorders Originating In The Perinatal Period: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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