P23 Congenital pneumonia

Not billable (header)Chapter 16

Report one of the more specific codes below.

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Codes under this one

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

Instructional notes

Chapter 16

Excludes2Not included here: the patient may have both; report both when both are present.

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)

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

Notes

Codes from this chapter are for use on newborn records only, never on maternal records

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.

neonatal pneumonia resulting from aspiration (P24.-)

Includes

infective pneumonia acquired in utero or during birth

Chapter 16: Certain conditions originating in the perinatal period · P19-P29 Respiratory and cardiovascular disorders specific to the perinatal period (P19-P29)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.