A50.1 — Early congenital syphilis, latent
A50.1 is a billable, specific ICD-10-CM code for early congenital syphilis, latent. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Congenital syphilis without clinical manifestations, with positive serological reaction and negative spinal fluid test, less than two years after birth.
Risk adjustment
A50.1 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.
Medicare coverage
A50.1 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52996Billing and Coding: Routine Foot Care
How A50.1 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A50.1.
- Syphilis, syphilitic›congenital›early, or less than 2 years after birth NEC›latent(without manifestations)
- Syphilis, syphilitic›congenital›early, or less than 2 years after birth NEC›latent›negative spinal fluid test
- Syphilis, syphilitic›congenital›early, or less than 2 years after birth NEC›latent›serology positive
Related codes at this level
Codes that share A50. If A50.1 is not quite right, the correct code is usually one of these.
- A50.0Early congenital syphilis, symptomatic
- A50.2Early congenital syphilis, unspecified
- A50.3Late congenital syphilitic oculopathy
- A50.4Late congenital neurosyphilis [juvenile neurosyphilis]
- A50.5Other late congenital syphilis, symptomatic
- A50.6Late congenital syphilis, latent
- A50.7Late congenital syphilis, unspecified
- A50.9Congenital syphilis, unspecified
Questions about A50.1
- Is A50.1 a billable ICD-10-CM code?
- Yes. A50.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A50.1 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).