Specific code 2014 ICD-9-CM Diagnosis Code 371.9
Unspecified corneal disorder
  • Billable Code
  • Short description: Corneal disorder NOS.
  • ICD-9-CM 371.9 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 371.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Corneal disorder
  • Disorder of cornea
  • Keratopathy
Clinical Information
  • Diseases of the cornea.
  • Pathological process affecting the transparent anterior portion of the fibrous coat of the eye.
  • The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous epithelium, bowman's membrane, stroma, descemet's membrane, and mesenchymal endothelium. It serves as the first refracting medium of the eye. It is structurally continuous with the sclera, is avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the trigeminal nerve via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses.
  • The transparent part of the eye that covers the iris and the pupil and allows light to enter the inside.
  • 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
Convert to ICD-10-CM: 371.9 converts directly to:
  • 2014 ICD-10-CM H18.9 Unspecified disorder of cornea
ICD-9-CM Volume 2 Index entries containing back-references to 371.9:
  • Disease, diseased - see also Syndrome
    • cornea (see also Keratopathy) 371.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 371.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.