A50.42

A50.42: Late congenital syphilitic encephalitis

Billable / specific codeICD-10-CM

A50.42 is a billable, specific ICD-10-CM code for late congenital syphilitic encephalitis. It is valid for submission on a claim.

Check A50.42 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above A50.42

A category’s note binds every code beneath it.

Written on A50.4: Late congenital neurosyphilis [juvenile neurosyphilis]

Hutchinson's triad (A50.53)

Risk adjustment

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

Medicare coverage

A50.42 is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52996Billing and Coding: Routine Foot Care
A56771Billing and Coding: Special Electroencephalography
A56937Billing and Coding: Psychiatry and Psychology Services
A57065Billing and Coding: Outpatient Psychiatry and Psychology Services

Alphabetic index entries that lead here

Encephalitis›in›syphilis›congenital

Code history

Unchanged in every release from FY2024 to FY2027.