ICD-10-CM · Chapter 1 · A00-B99
A51 Early syphilis
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| A51..0 | Primary genital syphilis | Yes |
| A51..1 | Primary anal syphilis | Yes |
| A51..2 | Primary syphilis of other sites | Yes |
| A51..3 | Secondary syphilis of skin and mucous membranes | No |
| A51..31 | Condyloma latum | Yes |
| A51..32 | Syphilitic alopecia | Yes |
| A51..39 | Other secondary syphilis of skin | Yes |
| A51..4 | Other secondary syphilis | No |
| A51..41 | Secondary syphilitic meningitis | Yes |
| A51..42 | Secondary syphilitic female pelvic disease | Yes |
| A51..43 | Secondary syphilitic oculopathy | Yes |
| A51..44 | Secondary syphilitic nephritis | Yes |
| A51..45 | Secondary syphilitic hepatitis | Yes |
| A51..46 | Secondary syphilitic osteopathy | Yes |
| A51..49 | Other secondary syphilitic conditions | Yes |
| A51..5 | Early syphilis, latent | Yes |
| A51..9 | Early syphilis, unspecified | Yes |
Last reviewed: September 2026