ICD-10 Code for Chancre
Also indexed as (any genital site) (hard) (hunterian) (mixed) (primary) (seronegative) (seropositive) (syphilitic)
The ICD-10-CM code for chancre is A51.0 — Primary genital syphilis. This is the code the Alphabetic Index gives for chancre with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
Which chancre code should you use?
The Alphabetic Index lists 6 codes under Chancre. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| congenital | A50.07 | Early mucocutaneous congenital syphilis | |
| conjunctiva NEC | A51.2 | Primary syphilis of other sites | |
| ducreyi | A57 | Chancroid | |
| Ducrey's | A57 | Chancroid | |
| extragenital | A51.2 | Primary syphilis of other sites | |
| eyelid | A51.2 | Primary syphilis of other sites | |
| lip | A51.2 | Primary syphilis of other sites | |
| nipple | A51.2 | Primary syphilis of other sites | |
| Nisbet's | A57 | Chancroid | |
| palate, soft | A51.2 | Primary syphilis of other sites | |
| phagedenic | A57 | Chancroid | |
| simple | A57 | Chancroid | |
| soft | A57 | Chancroid | |
| urethra | A51.0 | Primary genital syphilis | |
| yaws | A66.0 | Initial lesions of yaws |
Chancre of
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources