A53.9
A53.9: Syphilis, unspecified
Billable / specific codeICD-10-CM
A53.9 is a billable, specific ICD-10-CM code for syphilis, unspecified. It is valid for submission on a claim.
Check A53.9 with the rest of the claim: free scrubberExcludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- syphilis NOS under two years of age (A50.2)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Infection due to Treponema pallidum NOS
- Syphilis (acquired) NOS
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Syphilis, syphilitic(acquired)
- Syphilis, syphilitic›conjugal
- Syphilis, syphilitic›due to blood transfusion
- Syphilis, syphilitic›general
- Syphilis, syphilitic›organic
- Positive›VDRL›with signs or symptoms - code by site and stage under Syphilis
Code history
Unchanged in every release from FY2024 to FY2027.