ICD-10-CM · FY 2026 APRIL UPDATE
A51
Early syphilis
Diagnosis reference
Nonbillable categoryThis entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.
Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification
Related entries
Up to 30 descendants in this category
| CODE | DESCRIPTION | TYPE |
|---|---|---|
| A51.0 | Primary genital syphilis | Billable |
| A51.1 | Primary anal syphilis | Billable |
| A51.2 | Primary syphilis of other sites | Billable |
| A51.3 | Secondary syphilis of skin and mucous membranes | Category |
| A51.31 | Condyloma latum | Billable |
| A51.32 | Syphilitic alopecia | Billable |
| A51.39 | Other secondary syphilis of skin | Billable |
| A51.4 | Other secondary syphilis | Category |
| A51.41 | Secondary syphilitic meningitis | Billable |
| A51.42 | Secondary syphilitic female pelvic disease | Billable |
| A51.43 | Secondary syphilitic oculopathy | Billable |
| A51.44 | Secondary syphilitic nephritis | Billable |
| A51.45 | Secondary syphilitic hepatitis | Billable |
| A51.46 | Secondary syphilitic osteopathy | Billable |
| A51.49 | Other secondary syphilitic conditions | Billable |
| A51.5 | Early syphilis, latent | Billable |
| A51.9 | Early syphilis, unspecified | Billable |
Use the complete reference
This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.
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