A51
Header — not billableEarly syphilis
The ICD-10 code for early syphilis is A51.
A51 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 7 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- A50Congenital syphilisnon-billable header
- A52Late syphilisnon-billable header
- A53Other and unspecified syphilisnon-billable header
- A54Gonococcal infectionnon-billable header
- A55Chlamydial lymphogranuloma (venereum)
- A56Other sexually transmitted chlamydial diseasesnon-billable header
- A57Chancroid
- A58Granuloma inguinale
- A59Trichomoniasisnon-billable header
- A60Anogenital herpesviral [herpes simplex] infectionsnon-billable header
- A63Other predominantly sexually transmitted diseases, not elsewhere classifiednon-billable header
- A64Unspecified sexually transmitted disease
- A51Early syphilisnon-billable header