A53.0
Latent syphilis, unspecified as early or late
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 1 more
specific code sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 8 never code together
A50-A64block
A00-B99chapter
Excludes1
- certain localized infections - see body system-related chapters
Excludes2
- carrier or suspected carrier of infectious disease (Z22.-)Z22.-
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
- infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
- influenza and other acute respiratory infections (J00-J22)J00-J22
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 4
Index entries leading here 3
- Syphilis, syphilitic (acquired) A53.9
- Serology for syphilis
- Positive
Alongside this code 1 same parent — A53
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.