ICD-10-CM Code H18.4
Corneal degeneration
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.ICD Code H18.4 is a non-billable code. To code a diagnosis of this type, you must use one of the eight child codes of H18.4 that describes the diagnosis 'corneal degeneration' in more detail.
- H18.4 Corneal degeneration NON-BILLABLE
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- BILLABLE H18.40 Unspecified corneal degeneration
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- H18.411 Arcus senilis, right eye BILLABLE
- H18.412 Arcus senilis, left eye BILLABLE
- H18.413 Arcus senilis, bilateral BILLABLE
- H18.419 Arcus senilis, unspecified eye BILLABLE
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- H18.421 Band keratopathy, right eye BILLABLE
- H18.422 Band keratopathy, left eye BILLABLE
- H18.423 Band keratopathy, bilateral BILLABLE
- H18.429 Band keratopathy, unspecified eye BILLABLE
- BILLABLE H18.43 Other calcerous corneal degeneration
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- H18.441 Keratomalacia, right eye BILLABLE
- H18.442 Keratomalacia, left eye BILLABLE
- H18.443 Keratomalacia, bilateral BILLABLE
- H18.449 Keratomalacia, unspecified eye BILLABLE
- BILLABLE H18.49 Other corneal degeneration
The ICD code H184 is used to code Arcus senilis
Arcus senilis (or arcus senilis corneae) is a white, grey, or blue opaque ring in the corneal margin (peripheral corneal opacity), or white ring in front of the periphery of the iris. It is present at birth, but then fades; however, it is quite commonly present in the elderly. It can also appear earlier in life as a result of hypercholesterolemia. Arcus senilis can be confused with the limbus sign, which reflects calcium rather than lipid deposits.
| Specialty: | Ophthalmology |
| MeSH Code: | D001112 |
| ICD 9 Code: | 371.41 |
Four representative slides of corneal arcus - arcus deposits tend to start at 6 and 12 o'clock and fill in until becoming completely circumferential. There is a thin, clear section separating the arcus from the limbus, known as the lucid interval of Vogt. Image from Zech and Hoeg, 2008.
Coding Notes for H18.4 Info for medical coders on how to properly use this ICD-10 code
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Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here." - Mooren's ulcer - instead, use code H16.0-
- Recurrent erosion of cornea - instead, use code H18.83-
ICD-10-CM Alphabetical Index References for 'H18.4 - Corneal degeneration'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code H18.4. Click on any term below to browse the alphabetical index.
Parent Code: H18 - Other disorders of cornea