Other late congenital neurosyphilis

This code identifies a chronic, non-infectious manifestation of syphilis acquired congenitally, specifically affecting the nervous system, that presents after two years of age. It encompasses various neurological sequelae of congenital syphilis not otherwise specified, such as optic atrophy, eighth nerve deafness, or intellectual disability, when directly attributable to the congenital infection.

Assign this code for patients diagnosed with neurological complications of congenital syphilis that are not classified as juvenile paresis or tabes dorsalis, and where the onset of symptoms or diagnosis occurred after the early congenital syphilis stage. Documentation should clearly link the neurological condition to a history of congenital syphilis and specify the late-onset nature.

• Differentiate from early congenital neurosyphilis (A50.0x) based on the age of onset or diagnosis (after two years of age).
• Ensure documentation explicitly states "congenital" to distinguish from acquired neurosyphilis.
• Code any associated neurological manifestations (e.g., blindness, deafness) separately, if applicable, in addition to this code.