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    v1.0.28
    OpenPayerBilling CodesRespiratory and cardiovascular disorders specific to the perinatal periodICD-10-CM p23-congenital-pneumonia
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    ICD-10-CM Code For Congenital Pneumonia: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group P23 includes neonatal pneumonias present at birth or acquired in the perinatal period, such as infections of the lungs caused by bacteria, viruses, or other pathogens and conditions associated with respiratory distress in the newborn. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving infection of the neonatal respiratory tract, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM P23 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM P23: Congenital Pneumonia Overview

    The diagnoses in this group represent pneumonia present at birth or acquired in the perinatal period, affecting the neonatal respiratory system. These conditions target the lungs and respiratory function of newborns and often require careful clinical documentation of infection source, severity, and complications. Accurate coding matters for appropriate claim adjudication and ensuring complete clinical records that reflect neonatal care needs.

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    When to Use

    Use a code from this group when a newborn is diagnosed with pneumonia at birth or during the perinatal period and documentation specifies neonatal pulmonary infection or respiratory compromise due to infectious causes. Select the most specific code based on documented organism, timing, and associated complications to reflect clinical severity and resource use.

    ICD-10-CM Codes

    9 rows

    ICD-10-CM CodeDescription
    P23.0Congenital pneumonia due to viral agent
    P23.1Congenital pneumonia due to Chlamydia
    P23.2Congenital pneumonia due to staphylococcus
    P23.3Congenital pneumonia due to streptococcus, group B
    P23.4Congenital pneumonia due to Escherichia coli
    P23.5Congenital pneumonia due to Pseudomonas
    P23.6Congenital pneumonia due to other bacterial agents
    P23.8Congenital pneumonia due to other organisms
    P23.9Congenital pneumonia, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • A term newborn develops respiratory distress within the first 48 hours of life with tachypnea, grunting, intercostal retractions, and focal crackles on chest auscultation; a sepsis workup is performed and chest radiograph shows a lobar airspace opacity consistent with infection. A bacterial or viral pathogen is suspected as the cause of pneumonia acquired perinatally, and a perinatal pneumonia diagnosis is assigned to explain the neonatal respiratory infection. Typical codes: P23.0, P23.1
    • A preterm infant in the NICU on day 10 of life develops increasing oxygen requirement and new diffuse bilateral infiltrates on chest x-ray after prolonged rupture of membranes and chorioamnionitis during delivery; the infant is febrile with leukocytosis and requires escalation of respiratory support. This represents pneumonia related to perinatal infection in a premature neonate with risk factors from the maternal-fetal period, so a perinatal pneumonia code is used to capture the respiratory disorder specific to the perinatal period. Typical codes: P23.2, P23.3
    • A newborn initially treated for meconium aspiration syndrome has a prolonged ventilator course and then demonstrates clinical deterioration with fever, purulent endotracheal secretions, and a new focal consolidation on imaging, indicating secondary infectious pneumonia complicating the initial perinatal respiratory condition. The pneumonia is coded as a complication of the perinatal respiratory disorder to reflect the subsequent infectious process occurring in the neonatal period. Typical codes: P23.8, P23.9

    Related Codes

    P19-METABOLIC-ACIDEMIA-IN-NEWBORN

    ICD-10-CM Code For Metabolic Acidemia In Newborn: Group Overview

    P22-RESPIRATORY-DISTRESS-OF-NEWBORN

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