ICD-10-CM Code H18.40
Unspecified corneal degeneration
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.H18.40 is a billable ICD code used to specify a diagnosis of unspecified corneal degeneration. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
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.
MS-DRG Mapping
- DRG Group #124-125 - Other disorders of the eye with MCC.
- DRG Group #124-125 - Other disorders of the eye without MCC.
ICD-10-CM Alphabetical Index References for 'H18.40 - Unspecified corneal degeneration'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code H18.40. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 371.40 was previously used, H18.40 is the appropriate modern ICD10 code.
Parent Code: H18.4 - Corneal degeneration