A53.0
A53.0 — Latent syphilis, unspecified as early or late
Billable / specific codeICD-10-CM
A53.0 is a billable, specific ICD-10-CM code for latent syphilis, unspecified as early or late. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Latent syphilis NOS
- Positive serological reaction for syphilis
Risk adjustment
A53.0 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.
How A53.0 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 A53.0.
- Positive›serology for syphilis
- Positive›VDRL
- Positive›Wassermann reaction
- Serology for syphilis›positive
- Serology for syphilis›reactivated
- Syphilis, syphilitic›latent
- Syphilis, syphilitic›latent›date of infection unspecified
- Syphilis, syphilitic›latent›follow-up of latent syphilis
- Syphilis, syphilitic›latent›positive serology(only finding)
- Syphilis, syphilitic›latent›follow-up of latent syphilis›date of infection unspecified
- Syphilis, syphilitic›latent›positive serology›date of infection unspecified
Related codes at this level
Codes that share A53. If A53.0 is not quite right, the correct code is usually one of these.
Questions about A53.0
- Is A53.0 a billable ICD-10-CM code?
- Yes. A53.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A53.0 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).