2023

  1. ICD-10-CM Codes
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  2. P00-P96
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  3. P19-P29
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  4. P23-
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  5. 2023 ICD-10-CM Diagnosis Code P23.1

2023 ICD-10-CM Diagnosis Code P23.1

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Congenital pneumonia due to Chlamydia

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record
  • P23.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM P23.1 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of P23.1 - other international versions of ICD-10 P23.1 may differ.
ICD-10-CM Coding Rules
  • P23.1 should be used on the newborn record - not on the maternal record.
The following code(s) above P23.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to P23.1:
  • P00-P96
    2023 ICD-10-CM Range P00-P96

    Certain conditions originating in the perinatal period

    Includes
    • conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later
    Note
    • Codes from this chapter are for use on newborn records only, never on maternal records
    Type 2 Excludes
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • tetanus neonatorum (A33)
    Certain conditions originating in the perinatal period
  • P23
    ICD-10-CM Diagnosis Code P23

    Congenital pneumonia

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • infective pneumonia acquired in utero or during birth
    Type 1 Excludes
    • neonatal pneumonia resulting from aspiration (P24.-)
    Congenital pneumonia
Approximate Synonyms
  • Congenital chlamydial pneumonia
ICD-10-CM P23.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert P23.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
Code annotations containing back-references to P23.1:
  • Type 1 Excludes: A56
    , A74
    ICD-10-CM Diagnosis Code A56

    Other sexually transmitted chlamydial diseases

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • sexually transmitted diseases due to Chlamydia
    • trachomatis
    Type 1 Excludes
    • neonatal chlamydial conjunctivitis (P39.1)
    • neonatal chlamydial pneumonia (P23.1)
    Type 2 Excludes
    • chlamydial lymphogranuloma (A55)
    • conditions classified to A74.-
    ICD-10-CM Diagnosis Code A74

    Other diseases caused by chlamydiae

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • neonatal chlamydial conjunctivitis (P39.1)
    • neonatal chlamydial pneumonia (P23.1)
    • Reiter's disease (M02.3-)
    • sexually transmitted chlamydial diseases (A55-A56)
    Type 2 Excludes
    • chlamydial pneumonia (J16.0)

Diagnosis Index entries containing back-references to P23.1:
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
    ICD-10-CM Diagnosis Code J18.9

    Pneumonia, unspecified organism

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    • chlamydial J16.0
      ICD-10-CM Diagnosis Code J16.0

      Chlamydial pneumonia

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      • congenital P23.1
    • in (due to)
      • Chlamydia J16.0
        ICD-10-CM Diagnosis Code J16.0

        Chlamydial pneumonia

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
        • neonatal P23.1
    • congenital (infective) P23.9
      ICD-10-CM Diagnosis Code P23.9

      Congenital pneumonia, unspecified

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record

ICD-10-CM Codes Adjacent To P23.1
P19.1 Metabolic acidemia in newborn first noted during labor
P19.2 Metabolic acidemia noted at birth
P19.9 Metabolic acidemia, unspecified
P22 Respiratory distress of newborn
P22.0 Respiratory distress syndrome of newborn
P22.1 Transient tachypnea of newborn
P22.8 Other respiratory distress of newborn
P22.9 Respiratory distress of newborn, unspecified
P23 Congenital pneumonia
P23.0 Congenital pneumonia due to viral agent
P23.1 Congenital pneumonia due to Chlamydia
P23.2 Congenital pneumonia due to staphylococcus
P23.3 Congenital pneumonia due to streptococcus, group B
P23.4 Congenital pneumonia due to Escherichia coli
P23.5 Congenital pneumonia due to Pseudomonas
P23.6 Congenital pneumonia due to other bacterial agents
P23.8 Congenital pneumonia due to other organisms
P23.9 Congenital pneumonia, unspecified
P24 Neonatal aspiration
P24.0 Meconium aspiration
P24.00 …… without respiratory symptoms

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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