ICD-10 Code A50.7 – Late congenital syphilis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A50.7 – Late congenital syphilis, unspecified
What it is
A50.7 identifies late congenital syphilis when the infection was acquired before birth and later manifestations are present, but the record does not specify the exact late form. Use it for documented congenital syphilis with unspecified late sequelae.
Clinical signs
Clinical features vary; refer to documentation. Late congenital syphilis may be associated with findings such as dental, skeletal, ocular, or neurologic abnormalities, but you should code only what is documented.
When to use this code
Use A50.7 when the provider documents late congenital syphilis and does not name a more specific late manifestation. It is appropriate for historical or current records showing congenital infection with late effects. If the note identifies a specific late complication, code that condition instead, when supported.
Do not use for
Do not use this code for early congenital syphilis, unspecified congenital syphilis without late disease, or acquired syphilis in an infant or adult. Check documentation if the timing or congenital status is unclear.
Coding tip
Code the documented late manifestation whenever the chart names one; use A50.7 only when the late congenital form remains unspecified.