ICD-10-CM Code H18

Other disorders of cornea

Version 2021 Non-Billable Code

Not Valid for Submission

H18 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of other disorders of cornea. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:H18
Short Description:Other disorders of cornea
Long Description:Other disorders of cornea

Consider the following ICD-10 codes with a higher level of specificity:

  • H18.0 - Corneal pigmentations and deposits
  • H18.00 - Unspecified corneal deposit
  • H18.001 - Unspecified corneal deposit, right eye
  • H18.002 - Unspecified corneal deposit, left eye
  • H18.003 - Unspecified corneal deposit, bilateral
  • H18.009 - Unspecified corneal deposit, unspecified eye
  • H18.01 - Anterior corneal pigmentations
  • H18.011 - Anterior corneal pigmentations, right eye
  • H18.012 - Anterior corneal pigmentations, left eye
  • H18.013 - Anterior corneal pigmentations, bilateral
  • H18.019 - Anterior corneal pigmentations, unspecified eye
  • H18.02 - Argentous corneal deposits
  • H18.021 - Argentous corneal deposits, right eye
  • H18.022 - Argentous corneal deposits, left eye
  • H18.023 - Argentous corneal deposits, bilateral
  • H18.029 - Argentous corneal deposits, unspecified eye
  • H18.03 - Corneal deposits in metabolic disorders
  • H18.031 - Corneal deposits in metabolic disorders, right eye
  • H18.032 - Corneal deposits in metabolic disorders, left eye
  • H18.033 - Corneal deposits in metabolic disorders, bilateral
  • H18.039 - Corneal deposits in metabolic disorders, unspecified eye
  • H18.04 - Kayser-Fleischer ring
  • H18.041 - Kayser-Fleischer ring, right eye
  • H18.042 - Kayser-Fleischer ring, left eye
  • H18.043 - Kayser-Fleischer ring, bilateral
  • H18.049 - Kayser-Fleischer ring, unspecified eye
  • H18.05 - Posterior corneal pigmentations
  • H18.051 - Posterior corneal pigmentations, right eye
  • H18.052 - Posterior corneal pigmentations, left eye
  • H18.053 - Posterior corneal pigmentations, bilateral
  • H18.059 - Posterior corneal pigmentations, unspecified eye
  • H18.06 - Stromal corneal pigmentations
  • H18.061 - Stromal corneal pigmentations, right eye
  • H18.062 - Stromal corneal pigmentations, left eye
  • H18.063 - Stromal corneal pigmentations, bilateral
  • H18.069 - Stromal corneal pigmentations, unspecified eye
  • H18.1 - Bullous keratopathy
  • H18.10 - Bullous keratopathy, unspecified eye
  • H18.11 - Bullous keratopathy, right eye
  • H18.12 - Bullous keratopathy, left eye
  • H18.13 - Bullous keratopathy, bilateral
  • H18.2 - Other and unspecified corneal edema
  • H18.20 - Unspecified corneal edema
  • H18.21 - Corneal edema secondary to contact lens
  • H18.211 - Corneal edema secondary to contact lens, right eye
  • H18.212 - Corneal edema secondary to contact lens, left eye
  • H18.213 - Corneal edema secondary to contact lens, bilateral
  • H18.219 - Corneal edema secondary to contact lens, unspecified eye
  • H18.22 - Idiopathic corneal edema
  • H18.221 - Idiopathic corneal edema, right eye
  • H18.222 - Idiopathic corneal edema, left eye
  • H18.223 - Idiopathic corneal edema, bilateral
  • H18.229 - Idiopathic corneal edema, unspecified eye
  • H18.23 - Secondary corneal edema
  • H18.231 - Secondary corneal edema, right eye
  • H18.232 - Secondary corneal edema, left eye
  • H18.233 - Secondary corneal edema, bilateral
  • H18.239 - Secondary corneal edema, unspecified eye
  • H18.3 - Changes of corneal membranes
  • H18.30 - Unspecified corneal membrane change
  • H18.31 - Folds and rupture in Bowman's membrane
  • H18.311 - Folds and rupture in Bowman's membrane, right eye
  • H18.312 - Folds and rupture in Bowman's membrane, left eye
  • H18.313 - Folds and rupture in Bowman's membrane, bilateral
  • H18.319 - Folds and rupture in Bowman's membrane, unspecified eye
  • H18.32 - Folds in Descemet's membrane
  • H18.321 - Folds in Descemet's membrane, right eye
  • H18.322 - Folds in Descemet's membrane, left eye
  • H18.323 - Folds in Descemet's membrane, bilateral
  • H18.329 - Folds in Descemet's membrane, unspecified eye
  • H18.33 - Rupture in Descemet's membrane
  • H18.331 - Rupture in Descemet's membrane, right eye
  • H18.332 - Rupture in Descemet's membrane, left eye
  • H18.333 - Rupture in Descemet's membrane, bilateral
  • H18.339 - Rupture in Descemet's membrane, unspecified eye
  • H18.4 - Corneal degeneration
  • H18.40 - Unspecified corneal degeneration
  • H18.41 - Arcus senilis
  • H18.411 - Arcus senilis, right eye
  • H18.412 - Arcus senilis, left eye
  • H18.413 - Arcus senilis, bilateral
  • H18.419 - Arcus senilis, unspecified eye
  • H18.42 - Band keratopathy
  • H18.421 - Band keratopathy, right eye
  • H18.422 - Band keratopathy, left eye
  • H18.423 - Band keratopathy, bilateral
  • H18.429 - Band keratopathy, unspecified eye
  • H18.43 - Other calcerous corneal degeneration
  • H18.44 - Keratomalacia
  • H18.441 - Keratomalacia, right eye
  • H18.442 - Keratomalacia, left eye
  • H18.443 - Keratomalacia, bilateral
  • H18.449 - Keratomalacia, unspecified eye
  • H18.45 - Nodular corneal degeneration
  • H18.451 - Nodular corneal degeneration, right eye
  • H18.452 - Nodular corneal degeneration, left eye
  • H18.453 - Nodular corneal degeneration, bilateral
  • H18.459 - Nodular corneal degeneration, unspecified eye
  • H18.46 - Peripheral corneal degeneration
  • H18.461 - Peripheral corneal degeneration, right eye
  • H18.462 - Peripheral corneal degeneration, left eye
  • H18.463 - Peripheral corneal degeneration, bilateral
  • H18.469 - Peripheral corneal degeneration, unspecified eye
  • H18.49 - Other corneal degeneration
  • H18.5 - Hereditary corneal dystrophies
  • H18.50 - Unspecified hereditary corneal dystrophies
  • H18.501 - Unspecified hereditary corneal dystrophies, right eye
  • H18.502 - Unspecified hereditary corneal dystrophies, left eye
  • H18.503 - Unspecified hereditary corneal dystrophies, bilateral
  • H18.509 - Unspecified hereditary corneal dystrophies, unspecified eye
  • H18.51 - Endothelial corneal dystrophy
  • H18.511 - Endothelial corneal dystrophy, right eye
  • H18.512 - Endothelial corneal dystrophy, left eye
  • H18.513 - Endothelial corneal dystrophy, bilateral
  • H18.519 - Endothelial corneal dystrophy, unspecified eye
  • H18.52 - Epithelial (juvenile) corneal dystrophy
  • H18.521 - Epithelial (juvenile) corneal dystrophy, right eye
  • H18.522 - Epithelial (juvenile) corneal dystrophy, left eye
  • H18.523 - Epithelial (juvenile) corneal dystrophy, bilateral
  • H18.529 - Epithelial (juvenile) corneal dystrophy, unspecified eye
  • H18.53 - Granular corneal dystrophy
  • H18.531 - Granular corneal dystrophy, right eye
  • H18.532 - Granular corneal dystrophy, left eye
  • H18.533 - Granular corneal dystrophy, bilateral
  • H18.539 - Granular corneal dystrophy, unspecified eye
  • H18.54 - Lattice corneal dystrophy
  • H18.541 - Lattice corneal dystrophy, right eye
  • H18.542 - Lattice corneal dystrophy, left eye
  • H18.543 - Lattice corneal dystrophy, bilateral
  • H18.549 - Lattice corneal dystrophy, unspecified eye
  • H18.55 - Macular corneal dystrophy
  • H18.551 - Macular corneal dystrophy, right eye
  • H18.552 - Macular corneal dystrophy, left eye
  • H18.553 - Macular corneal dystrophy, bilateral
  • H18.559 - Macular corneal dystrophy, unspecified eye
  • H18.59 - Other hereditary corneal dystrophies
  • H18.591 - Other hereditary corneal dystrophies, right eye
  • H18.592 - Other hereditary corneal dystrophies, left eye
  • H18.593 - Other hereditary corneal dystrophies, bilateral
  • H18.599 - Other hereditary corneal dystrophies, unspecified eye
  • H18.6 - Keratoconus
  • H18.60 - Keratoconus, unspecified
  • H18.601 - Keratoconus, unspecified, right eye
  • H18.602 - Keratoconus, unspecified, left eye
  • H18.603 - Keratoconus, unspecified, bilateral
  • H18.609 - Keratoconus, unspecified, unspecified eye
  • H18.61 - Keratoconus, stable
  • H18.611 - Keratoconus, stable, right eye
  • H18.612 - Keratoconus, stable, left eye
  • H18.613 - Keratoconus, stable, bilateral
  • H18.619 - Keratoconus, stable, unspecified eye
  • H18.62 - Keratoconus, unstable
  • H18.621 - Keratoconus, unstable, right eye
  • H18.622 - Keratoconus, unstable, left eye
  • H18.623 - Keratoconus, unstable, bilateral
  • H18.629 - Keratoconus, unstable, unspecified eye
  • H18.7 - Other and unspecified corneal deformities
  • H18.70 - Unspecified corneal deformity
  • H18.71 - Corneal ectasia
  • H18.711 - Corneal ectasia, right eye
  • H18.712 - Corneal ectasia, left eye
  • H18.713 - Corneal ectasia, bilateral
  • H18.719 - Corneal ectasia, unspecified eye
  • H18.72 - Corneal staphyloma
  • H18.721 - Corneal staphyloma, right eye
  • H18.722 - Corneal staphyloma, left eye
  • H18.723 - Corneal staphyloma, bilateral
  • H18.729 - Corneal staphyloma, unspecified eye
  • H18.73 - Descemetocele
  • H18.731 - Descemetocele, right eye
  • H18.732 - Descemetocele, left eye
  • H18.733 - Descemetocele, bilateral
  • H18.739 - Descemetocele, unspecified eye
  • H18.79 - Other corneal deformities
  • H18.791 - Other corneal deformities, right eye
  • H18.792 - Other corneal deformities, left eye
  • H18.793 - Other corneal deformities, bilateral
  • H18.799 - Other corneal deformities, unspecified eye
  • H18.8 - Other specified disorders of cornea
  • H18.81 - Anesthesia and hypoesthesia of cornea
  • H18.811 - Anesthesia and hypoesthesia of cornea, right eye
  • H18.812 - Anesthesia and hypoesthesia of cornea, left eye
  • H18.813 - Anesthesia and hypoesthesia of cornea, bilateral
  • H18.819 - Anesthesia and hypoesthesia of cornea, unspecified eye
  • H18.82 - Corneal disorder due to contact lens
  • H18.821 - Corneal disorder due to contact lens, right eye
  • H18.822 - Corneal disorder due to contact lens, left eye
  • H18.823 - Corneal disorder due to contact lens, bilateral
  • H18.829 - Corneal disorder due to contact lens, unspecified eye
  • H18.83 - Recurrent erosion of cornea
  • H18.831 - Recurrent erosion of cornea, right eye
  • H18.832 - Recurrent erosion of cornea, left eye
  • H18.833 - Recurrent erosion of cornea, bilateral
  • H18.839 - Recurrent erosion of cornea, unspecified eye
  • H18.89 - Other specified disorders of cornea
  • H18.891 - Other specified disorders of cornea, right eye
  • H18.892 - Other specified disorders of cornea, left eye
  • H18.893 - Other specified disorders of cornea, bilateral
  • H18.899 - Other specified disorders of cornea, unspecified eye
  • H18.9 - Unspecified disorder of cornea

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
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

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

  • Cloudy cornea (Medical Encyclopedia)
  • Corneal injury (Medical Encyclopedia)
  • Corneal transplant (Medical Encyclopedia)
  • Corneal ulcers and infections (Medical Encyclopedia)
  • Fuchs dystrophy (Medical Encyclopedia)
  • Keratoconus (Medical Encyclopedia)

[Learn More]