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  1. ICD.Codes
  2. ICD-10-CM (2016)
  3. Chapter 7
  4. Section H15-H22
  5. Code H18.4

ICD-10-CM Code H18.4
Corneal degeneration

NON-BILLABLE
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-10 from 2011 - 2016

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.

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.

Source: Wikipedia

Coding Notes for H18.4 Info for medical coders on how to properly use this ICD-10 code

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.

Hassal-Henle bodies or warts(cornea)
Necrosis, necrotic(ischemic) (see: Gangrene) +
Wart(due to HPV) (filiform) (infectious) (viral) +
Degeneration, degenerative +

Parent Code: H18 - Other disorders of cornea

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/H184