H18 Other disorders of cornea
ICD-10-CM category H18 sits in Chapter 7 (Diseases of the eye and adnexa, H00-H59). It contains 155 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
H18.0 Corneal pigmentations and depositsH18.00 Unspecified corneal depositH18.01 Anterior corneal pigmentationsH18.02 Argentous corneal depositsH18.03 Corneal deposits in metabolic disordersH18.04 Kayser-Fleischer ringH18.05 Posterior corneal pigmentationsH18.06 Stromal corneal pigmentationsH18.1 Bullous keratopathyH18.2 Other and unspecified corneal edemaH18.21 Corneal edema secondary to contact lensH18.22 Idiopathic corneal edemaH18.23 Secondary corneal edemaH18.3 Changes of corneal membranesH18.31 Folds and rupture in Bowman's membraneH18.32 Folds in Descemet's membraneH18.33 Rupture in Descemet's membraneH18.4 Corneal degenerationH18.41 Arcus senilisH18.42 Band keratopathyH18.44 KeratomalaciaH18.45 Nodular corneal degenerationH18.46 Peripheral corneal degenerationH18.5 Hereditary corneal dystrophiesH18.50 Unspecified hereditary corneal dystrophiesH18.51 Endothelial corneal dystrophyH18.52 Epithelial (juvenile) corneal dystrophyH18.53 Granular corneal dystrophyH18.54 Lattice corneal dystrophyH18.55 Macular corneal dystrophyH18.59 Other hereditary corneal dystrophiesH18.6 KeratoconusH18.60 Keratoconus, unspecifiedH18.61 Keratoconus, stableH18.62 Keratoconus, unstableH18.7 Other and unspecified corneal deformitiesH18.71 Corneal ectasiaH18.72 Corneal staphylomaH18.73 DescemetoceleH18.79 Other corneal deformities
Billable codes in H18
| Code | Description |
|---|---|
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 |
H18.011 | 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 |
H18.021 | 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 |
H18.031 | 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 |
H18.041 | 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 |
H18.051 | 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 |
H18.061 | 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 |
H18.10 | Bullous keratopathy, unspecified eye |
H18.11 | Bullous keratopathy, right eye |
H18.12 | Bullous keratopathy, left eye |
H18.13 | Bullous keratopathy, bilateral |
H18.20 | Unspecified corneal edema |
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 |
H18.221 | 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 |
H18.231 | 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 |
H18.30 | Unspecified corneal membrane change |
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 |
H18.321 | 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 |
H18.331 | 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 |
H18.40 | Unspecified corneal degeneration |
H18.411 | Arcus senilis, right eye |
H18.412 | Arcus senilis, left eye |
H18.413 | Arcus senilis, bilateral |
H18.419 | Arcus senilis, unspecified eye |
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 |
H18.441 | Keratomalacia, right eye |
H18.442 | Keratomalacia, left eye |
H18.443 | Keratomalacia, bilateral |
H18.449 | Keratomalacia, unspecified eye |
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 |
H18.461 | 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 |
H18.501 | 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 |
H18.511 | 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 |
H18.521 | 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 |
H18.531 | 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 |
H18.541 | 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 |
H18.551 | 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 |
H18.591 | 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 |
H18.601 | Keratoconus, unspecified, right eye |
H18.602 | Keratoconus, unspecified, left eye |
H18.603 | Keratoconus, unspecified, bilateral |
H18.609 | Keratoconus, unspecified, unspecified eye |
H18.611 | Keratoconus, stable, right eye |
H18.612 | Keratoconus, stable, left eye |
H18.613 | Keratoconus, stable, bilateral |
H18.619 | Keratoconus, stable, unspecified eye |
H18.621 | Keratoconus, unstable, right eye |
H18.622 | Keratoconus, unstable, left eye |
H18.623 | Keratoconus, unstable, bilateral |
H18.629 | Keratoconus, unstable, unspecified eye |
H18.70 | Unspecified corneal deformity |
H18.711 | Corneal ectasia, right eye |
H18.712 | Corneal ectasia, left eye |
H18.713 | Corneal ectasia, bilateral |
H18.719 | Corneal ectasia, unspecified eye |
H18.721 | Corneal staphyloma, right eye |
H18.722 | Corneal staphyloma, left eye |
H18.723 | Corneal staphyloma, bilateral |
H18.729 | Corneal staphyloma, unspecified eye |
H18.731 | Descemetocele, right eye |
H18.732 | Descemetocele, left eye |
H18.733 | Descemetocele, bilateral |
H18.739 | Descemetocele, unspecified eye |
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 |
H18.811 | 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 |
H18.821 | 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 |
H18.831 | 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 |
H18.891 | 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 |
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