MCMedicalCodingSoftware
P23

P23: Congenital pneumonia

Non-billable headerICD-10-CM

P23 is a non-billable header ICD-10-CM code for congenital pneumonia. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • neonatal pneumonia resulting from aspiration (P24.-)

Includes

Conditions this code covers.

  • infective pneumonia acquired in utero or during birth

Other codes that can never be billed with P23

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • J13Pneumonia due to Streptococcus pneumoniae
  • J14Pneumonia due to Hemophilus influenzae
  • J15Bacterial pneumonia, not elsewhere classified
  • J16Pneumonia due to other infectious organisms, not elsewhere classified
  • J18Pneumonia, unspecified organism
  • A56Other sexually transmitted chlamydial diseases
  • A74Other diseases caused by chlamydiae

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead P23

9 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.