ICD-10-CM Code H18.49

Other corneal degeneration

Version 2020 Billable Code

Valid for Submission

H18.49 is a billable code used to specify a medical diagnosis of other corneal degeneration. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code H18.49 might also be used to specify conditions or terms like amyloid corneal degeneration, amyloid of cornea, anterior crocodile shagreen of cornea, corneal dellen, corneal stromal degeneration, corneal stromal degeneration, etc

Short Description:Other corneal degeneration
Long Description:Other corneal degeneration

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code H18.49 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Amyloid corneal degeneration
  • Amyloid of cornea
  • Anterior crocodile shagreen of cornea
  • Corneal dellen
  • Corneal stromal degeneration
  • Corneal stromal degeneration
  • Crocodile shagreen of cornea
  • Discrete colliquative keratopathy
  • Fatty degeneration of cornea
  • Hassall-Henle bodies
  • Labrador keratopathy
  • Marginal corneal gutter
  • Microcystoid epithelial degeneration of cornea
  • Ocular amyloid deposit
  • Polymorphic amyloid degeneration of cornea

Diagnostic Related Groups

The ICD-10 code H18.49 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert H18.49 to ICD-9

  • 371.49 - Cornea degeneration NEC (Approximate Flag)

Code Classification

  • Diseases of the eye and adnexa (H00–H59)
    • Disorders of sclera, cornea, iris and ciliary body (H15-H22)
      • Other disorders of cornea (H18)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Corneal Disorders

Your cornea is the outermost layer of your eye. It is clear and shaped like a dome. The cornea helps to shield the rest of the eye from germs, dust, and other harmful matter. It also helps your eye to focus. If you wear contact lenses, they float on top of your corneas.

Problems with the cornea include

  • Refractive errors
  • Allergies
  • Infections
  • Injuries
  • Dystrophies - conditions in which parts of the cornea lose clarity due to a buildup of cloudy material

Treatments of corneal disorders include medicines, corneal transplantation, and corneal laser surgery.

NIH: National Eye Institute

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