ICD-10-CM
ICD-10 code for Iridocyclitis syphilitic (secondary): A51.43
The ICD-10-CM index points "Iridocyclitis syphilitic (secondary)" to A51.43, Secondary syphilitic oculopathy. A51.43 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in A51
A header groups codes and is not billed. A billable code is one you can report.
- A51Early syphilisHeader
- A51.0Primary genital syphilisBillable
- A51.1Primary anal syphilisBillable
- A51.2Primary syphilis of other sitesBillable
- A51.3Secondary syphilis of skin and mucous membranesHeader
- A51.31Condyloma latumBillable
- A51.32Syphilitic alopeciaBillable
- A51.39Other secondary syphilis of skinBillable
- A51.4Other secondary syphilisHeader
- A51.41Secondary syphilitic meningitisBillable
- A51.42Secondary syphilitic female pelvic diseaseBillable
- A51.43Secondary syphilitic oculopathyBillable
- A51.44Secondary syphilitic nephritisBillable
- A51.45Secondary syphilitic hepatitisBillable
- A51.46Secondary syphilitic osteopathyBillable
- A51.49Other secondary syphilitic conditionsBillable
- A51.5Early syphilis, latentBillable
- A51.9Early syphilis, unspecifiedBillable
Related conditions
Related pages
- A51.43 code detailsNotes, nearby codes, CMS-HCC group
- Category A51Every 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 Iridocyclitis syphilitic (secondary)?
The ICD-10-CM index points "Iridocyclitis syphilitic (secondary)" to A51.43, Secondary syphilitic oculopathy. A51.43 is a billable code.
Is A51.43 billable?
Yes. A51.43 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is A51.43 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.