MCMCB Pro
A50.0

A50.0Early congenital syphilis, symptomatic

Non-billable headerICD-10-CM

A50.0 is a non-billable header ICD-10-CM code for early congenital syphilis, symptomatic. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Any congenital syphilitic condition specified as early or manifest less than two years after birth.

Other codes that can never be billed with A50.0

These codes carry an Excludes1 note pointing at A50.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A50.0 alone.

  • P28.89Other specified respiratory conditions of newborn

Risk adjustment

A50.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead A50.0

9 child codes. Green means billable.

Related codes at this level

Codes that share A50. If A50.0 is not quite right, the correct code is usually one of these.

Questions about A50.0

Is A50.0 a billable ICD-10-CM code?
No. A50.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does A50.0 sit in the tabular list?
Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.