A50.03 Early congenital syphilitic pharyngitis

ICD-10-CM A50.03: Early Congenital Syphilitic Pharyngitis

ICD-10-CM code A50.03 identifies early congenital syphilitic pharyngitis, an active diagnosis concept classified under symptomatic early congenital syphilis. Congenital syphilis occurs when syphilis is passed from a pregnant woman to her baby. This reference synthesizes official terminology records and clinical registry data. 1 3

Plain-language overview

Congenital syphilis is a disease that occurs when a mother passes syphilis to her baby during pregnancy, and it can increase the likelihood of early delivery or stillbirth. 3

What this code represents

Code A50.03 represents early congenital syphilitic pharyngitis and is an active terminology record with a semantic type of Disease or Syndrome in the ICD-10-CM version 2026. 1

The A50.03 concept is a narrower descendant of the parent concept A50.0, which designates symptomatic early congenital syphilis within the ICD-10-CM hierarchy. 1

Coding details

The official preferred name for A50.03 is early congenital syphilitic pharyngitis, and the terminology record indicates this specific code has narrower concepts under it. 1

Documentation considerations

The terminology record for A50.03 provides the official preferred name of early congenital syphilitic pharyngitis and classifies it as an active Disease or Syndrome concept. 1

Coverage and utilization context

The A50.03 diagnosis code appears within an Extracorporeal Life Support registry document list of ICD-10 diagnosis codes, positioned alongside related early congenital syphilis diagnoses like pneumonia and rhinitis. 4

What the sources add

The terminology record defines A50.03 as an active disease concept, while the registry document lists the code alongside related early congenital syphilis diagnoses like pneumonia and rhinitis. 1 4

Clinical context

Public health information establishes that congenital syphilis disproportionately impacts people from racial and ethnic minority groups during the current epidemic. 3

Questions to verify

The supplied sources do not establish the specific clinical symptoms, diagnostic criteria, treatment protocols, or payer-specific coverage policies for the A50.03 diagnosis code. 1 3 4

Sources

1. ICD-10-CM A50.03 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Phecode 090 · ExPRSweb — csg.sph.umich.edu; accessed 2026-07-27.
3. About Syphilis — cdc.gov; accessed 2026-07-27.
4. ICD-10 Diagnosis Codes | Extracorporeal Life Support | ECMO — elso.org; accessed 2026-07-27.