A51.43 — Secondary syphilitic oculopathy
A51.43 is a billable, specific ICD-10-CM code for secondary syphilitic oculopathy. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Secondary syphilitic chorioretinitis
- Secondary syphilitic iridocyclitis, iritis
- Secondary syphilitic uveitis
Other codes that can never be billed with A51.43
These codes carry an Excludes1 note pointing at A51.43. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A51.43 alone.
- H20.0Acute and subacute iridocyclitis
Risk adjustment
A51.43 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
A51.43 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53060Billing and Coding: Ophthalmology: Extended Ophthalmoscopy and Fundus Photography
How A51.43 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A51.43.
- Chorioretinitis›syphilitic(secondary)
- Iridocyclitis›syphilitic(secondary)
- Iritis›syphilitic(secondary)
- Retinitis›syphilitic(early) (secondary)
- Syphilis, syphilitic›chorioretinitis
- Syphilis, syphilitic›ciliary body(secondary)
- Syphilis, syphilitic›iris, iritis(secondary)
- Syphilis, syphilitic›uveal tract(secondary)
- Syphilis, syphilitic›uveitis(secondary)
- Uveitis›syphilitic(secondary)
- Chorioretinitis›in›syphilis(secondary)
- Iridocyclitis›in›syphilis
Related codes at this level
Codes that share A51.4. If A51.43 is not quite right, the correct code is usually one of these.
Questions about A51.43
- Is A51.43 a billable ICD-10-CM code?
- Yes. A51.43 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A51.43 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Infections with a predominantly sexual mode of transmission (A50-A64).