ICD-10-CM Codes
P00-P96 Certain conditions originating in the perinatal period
P19-P29 Respiratory and cardiovascular disorders specific to the perinatal period
P23- Congenital pneumonia
2023 ICD-10-CM Diagnosis Code P23.1

2023 ICD-10-CM Diagnosis Code P23.1

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
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
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
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
- 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
- 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
  - due to
    - Chlamydia 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

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.

2023 ICD-10-CM Diagnosis Code P23.1

Congenital pneumonia due to Chlamydia

Certain conditions originating in the perinatal period

Congenital pneumonia

Other sexually transmitted chlamydial diseases

Other diseases caused by chlamydiae

Pneumonia, unspecified organism

Chlamydial pneumonia

Congenital pneumonia, unspecified

Chlamydial pneumonia