A53: Other and unspecified syphilis
Codes under A53 (Other and unspecified syphilis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| A53.0 | Latent syphilis, unspecified as early or late | ✓ |
| A53.0 | Latent syphilis, unspecified as early or late | ✓ |
| A53.9 | Syphilis, unspecified | ✓ |
| A53.9 | Syphilis, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code A53?
A53 is an ICD-10-CM category covering Other and unspecified syphilis. It contains 4 more specific diagnosis codes, 4 of which are billable.
Is A53 a billable code?
No — A53 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example A53.0 — Latent syphilis, unspecified as early or late). 4 of the 4 codes under A53 are billable.
What codes fall under A53?
A53 includes A53.0, A53.0, A53.9, A53.9. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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