ICD-10-CM · Chapter 1 · A00–B99
A50.31
Late congenital syphilitic interstitial keratitis
Certain infectious and parasitic diseases
Quick facts
- Code
- A50.31
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 1 — Certain infectious and parasitic diseases
- Category
- A50 — Congenital syphilis
- Specificity
- 5 characters
How coders use this code
ICD-10-CM A50.31 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of late congenital syphilitic interstitial keratitis. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in A50
- A50Congenital syphilis
- A50.0Early congenital syphilis, symptomatic
- A50.01Early congenital syphilitic oculopathy
- A50.02Early congenital syphilitic osteochondropathy
- A50.03Early congenital syphilitic pharyngitis
- A50.04Early congenital syphilitic pneumonia
- A50.05Early congenital syphilitic rhinitis
- A50.06Early cutaneous congenital syphilis
- A50.07Early mucocutaneous congenital syphilis
- A50.08Early visceral congenital syphilis
- A50.09Other early congenital syphilis, symptomatic
- A50.1Early congenital syphilis, latent
- A50.2Early congenital syphilis, unspecified
- A50.3Late congenital syphilitic oculopathy
- A50.30Late congenital syphilitic oculopathy, unspecified
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