ICD-10-CM
ICD-10 code for Syphilis: A53.9
The ICD-10-CM index points "Syphilis" to A53 (Other and unspecified syphilis), a header that is not billable. When nothing more specific is documented, the billable code is A53.9, Syphilis, unspecified.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
- A52.79abdomen (late), Other symptomatic late syphilisBillable
- A52.15acoustic nerve, Late syphilitic neuropathyBillable
- A51.49adenopathy (secondary), Other secondary syphilitic conditionsBillable
- A52.79adrenal (gland) (with cortical hypofunction), Other symptomatic late syphilisBillable
- A51.32alopecia (secondary), Syphilitic alopeciaBillable
- A52.79anemia (late), Other symptomatic late syphilis, and D63.8 for the manifestationBillable
- A52.01aneurysm (aorta) (ruptured), Syphilitic aneurysm of aortaBillable
- A52.74anus (late), Syphilis of liver and other visceraBillable
- A52.02aorta (arch) (abdominal) (thoracic), Syphilitic aortitisBillable
- A52.03aortic (insufficiency) (regurgitation) (stenosis), Syphilitic endocarditisBillable
- A52.13arachnoid (adhesive) (cerebral) (spinal), Late syphilitic meningitisBillable
- A52.11ataxia (locomotor), Tabes dorsalisBillable
- A51.39atrophoderma maculatum, Other secondary syphilis of skinBillable
- A52.06auricular fibrillation, Other syphilitic heart involvementBillable
- A52.76bladder (late), Other genitourinary symptomatic late syphilisBillable
- A52.77bone, Syphilis of bone and jointBillable
- A52.17brain, General paresisBillable
- A52.79breast (late), Other symptomatic late syphilisBillable
- A52.72bronchus (late), Syphilis of lung and bronchusBillable
- A51.0bubo (primary), Primary genital syphilisBillable
- A52.19bulbar palsy, Other symptomatic neurosyphilisBillable
- A52.78bursa (late), Syphilis of other musculoskeletal tissueBillable
- A52.06cardiac decompensation, Other syphilitic heart involvementBillable
- A52.00cardiovascular, Cardiovascular syphilis, unspecifiedBillable
- A52.3central nervous system (late) (recurrent) (relapse) (tertiary), Neurosyphilis, unspecifiedBillable
- A52.17cerebral, General paresisBillable
- A52.12cerebrospinal (tabetic type), Other cerebrospinal syphilisBillable
- A52.05cerebrovascular, Other cerebrovascular syphilisBillable
- A52.76cervix (late), Other genitourinary symptomatic late syphilisBillable
- A51.0chancre (multiple), Primary genital syphilisBillable
- A52.16Charcot's joint, Charcot's arthropathy (tabetic)Billable
- A51.43chorioretinitis, Secondary syphilitic oculopathyBillable
- A51.43ciliary body (secondary), Secondary syphilitic oculopathyBillable
- A52.74colon (late), Syphilis of liver and other visceraBillable
- A52.11combined spinal sclerosis, Tabes dorsalisBillable
- A51.31condyloma (latum), Condyloma latumBillable
- A50.9congenital, Congenital syphilis, unspecifiedBillable
- A53.9conjugal, Syphilis, unspecifiedBillable
- A52.71conjunctiva (late), Late syphilitic oculopathyBillable
- Z20.2contact, Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmissionBillable
More specific codes in A53
A header groups codes and is not billed. A billable code is one you can report.
Excludes1
Excludes1 means these codes are not reported together.
Related conditions
Related pages
- A53.9 code detailsNotes, nearby codes, CMS-HCC group
- Category A53Every code under it
- Chapter 1Certain infectious and parasitic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Syphilis?
The ICD-10-CM index points "Syphilis" to A53 (Other and unspecified syphilis), a header that is not billable. When nothing more specific is documented, the billable code is A53.9, Syphilis, unspecified.
Is A53.9 billable?
Yes. A53.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to A53.9?
The CDC tabular list gives 1 Excludes1 note (not coded together) for A53.9 and the categories above it. They are listed on this page.
What chapter is A53.9 in?
Chapter 1. Certain infectious and parasitic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.