A50.1 Early congenital syphilis, latent

Billable ICD-10-CM code, FY2026.

Applicable to

• Congenital syphilis without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after birth.

MS-DRG index

Defines the logic of DRG(s) 867-869 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 090.1 Early congenital syphilis, latent

Code annotations containing back-references to A50.1

Back-references to A50

• Code First: J99 Respiratory disorders in diseases classified elsewhere ("congenital syphilis (A50.-)")
• Type 2 Excludes: N34 Urethritis and urethral syndrome ("urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)")
• Type 2 Excludes: P37 Other congenital infectious and parasitic diseases ("congenital syphilis (A50.-)")

Diagnosis Index entries for A50.1

• Syphilis, syphilitic (acquired) › congenital › early, or less than 2 years after birth NEC › latent (without manifestations)
• Syphilis, syphilitic (acquired) › congenital › early, or less than 2 years after birth NEC › latent (without manifestations) › negative spinal fluid test
• Syphilis, syphilitic (acquired) › congenital › early, or less than 2 years after birth NEC › latent (without manifestations) › serology positive

Nearby codes

• A50.05 Early congenital syphilitic rhinitis
• A50.06 Early cutaneous congenital syphilis
• A50.07 Early mucocutaneous congenital syphilis
• A50.08 Early visceral congenital syphilis
• A50.09 Other early congenital syphilis, symptomatic
• A50.1 Early congenital syphilis, latent (this code)
• A50.2 Early congenital syphilis, unspecified
• A50.3 Late congenital syphilitic oculopathy
• A50.30 Late congenital syphilitic oculopathy, unspecified
• A50.31 Late congenital syphilitic interstitial keratitis
• A50.32 Late congenital syphilitic chorioretinitis