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  6. 2024 ICD-10-CM Code H18
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code H18

Other disorders of cornea

ICD-10-CM Code:
H18
ICD-10 Code for:
Other disorders of cornea
Is Billable?
Not Valid for Submission
Code Navigator:

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)

H18 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other disorders of cornea. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Other disorders of cornea

Non-specific codes like H18 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for other disorders of cornea:

  • H18.0 for Corneal pigmentations and deposits - NON-BILLABLE CODE

  • H18.00 for Unspecified corneal deposit - NON-BILLABLE CODE

  • H18.01 for Anterior corneal pigmentations - NON-BILLABLE CODE

  • H18.02 for Argentous corneal deposits - NON-BILLABLE CODE

  • H18.03 for Corneal deposits in metabolic disorders - NON-BILLABLE CODE

  • H18.04 for Kayser-Fleischer ring - NON-BILLABLE CODE

  • H18.05 for Posterior corneal pigmentations - NON-BILLABLE CODE

  • H18.06 for Stromal corneal pigmentations - NON-BILLABLE CODE

  • H18.1 for Bullous keratopathy - NON-BILLABLE CODE

  • Use H18.10 for Bullous keratopathy, unspecified eye - BILLABLE CODE

  • Use H18.11 for Bullous keratopathy, right eye - BILLABLE CODE

  • Use H18.12 for Bullous keratopathy, left eye - BILLABLE CODE

  • Use H18.13 for Bullous keratopathy, bilateral - BILLABLE CODE

  • H18.2 for Other and unspecified corneal edema - NON-BILLABLE CODE

  • Use H18.20 for Unspecified corneal edema - BILLABLE CODE

  • H18.21 for Corneal edema secondary to contact lens - NON-BILLABLE CODE

  • H18.22 for Idiopathic corneal edema - NON-BILLABLE CODE

  • H18.23 for Secondary corneal edema - NON-BILLABLE CODE

  • H18.3 for Changes of corneal membranes - NON-BILLABLE CODE

  • Use H18.30 for Unspecified corneal membrane change - BILLABLE CODE

  • H18.31 for Folds and rupture in Bowman's membrane - NON-BILLABLE CODE

  • H18.32 for Folds in Descemet's membrane - NON-BILLABLE CODE

  • H18.33 for Rupture in Descemet's membrane - NON-BILLABLE CODE

  • H18.4 for Corneal degeneration - NON-BILLABLE CODE

  • Use H18.40 for Unspecified corneal degeneration - BILLABLE CODE

  • H18.41 for Arcus senilis - NON-BILLABLE CODE

  • H18.42 for Band keratopathy - NON-BILLABLE CODE

  • Use H18.43 for Other calcerous corneal degeneration - BILLABLE CODE

  • H18.44 for Keratomalacia - NON-BILLABLE CODE

  • H18.45 for Nodular corneal degeneration - NON-BILLABLE CODE

  • H18.46 for Peripheral corneal degeneration - NON-BILLABLE CODE

  • Use H18.49 for Other corneal degeneration - BILLABLE CODE

  • H18.5 for Hereditary corneal dystrophies - NON-BILLABLE CODE

  • H18.50 for Unspecified hereditary corneal dystrophies - NON-BILLABLE CODE

  • H18.51 for Endothelial corneal dystrophy - NON-BILLABLE CODE

  • H18.52 for Epithelial (juvenile) corneal dystrophy - NON-BILLABLE CODE

  • H18.53 for Granular corneal dystrophy - NON-BILLABLE CODE

  • H18.54 for Lattice corneal dystrophy - NON-BILLABLE CODE

  • H18.55 for Macular corneal dystrophy - NON-BILLABLE CODE

  • H18.59 for Other hereditary corneal dystrophies - NON-BILLABLE CODE

  • H18.6 for Keratoconus - NON-BILLABLE CODE

  • H18.60 for Keratoconus, unspecified - NON-BILLABLE CODE

  • H18.61 for Keratoconus, stable - NON-BILLABLE CODE

  • H18.62 for Keratoconus, unstable - NON-BILLABLE CODE

  • H18.7 for Other and unspecified corneal deformities - NON-BILLABLE CODE

  • Use H18.70 for Unspecified corneal deformity - BILLABLE CODE

  • H18.71 for Corneal ectasia - NON-BILLABLE CODE

  • H18.72 for Corneal staphyloma - NON-BILLABLE CODE

  • H18.73 for Descemetocele - NON-BILLABLE CODE

  • H18.79 for Other corneal deformities - NON-BILLABLE CODE

  • H18.8 for Other specified disorders of cornea - NON-BILLABLE CODE

  • H18.81 for Anesthesia and hypoesthesia of cornea - NON-BILLABLE CODE

  • H18.82 for Corneal disorder due to contact lens - NON-BILLABLE CODE

  • H18.83 for Recurrent erosion of cornea - NON-BILLABLE CODE

  • H18.89 for Other specified disorders of cornea - NON-BILLABLE CODE

  • Use H18.9 for Unspecified disorder of cornea - BILLABLE CODE

Patient Education


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


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.