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    v1.0.28
    OpenPayerBilling CodesDisorders of sclera, cornea, iris and ciliary bodyICD-10-CM h18-other-disorders-of-cornea
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    ICD-10-CM Code For Other Disorders Of Cornea: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H18 includes nontraumatic corneal conditions such as corneal opacities, endothelial disorders, interstitial and stromal keratitis, and various corneal dystrophies that affect corneal clarity and function. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving corneal pathology severity, laterality, and complications such as scarring, edema, or recurrent erosions. Accurate coding within the ICD-10-CM H18 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM H18: Other Disorders Of Cornea Overview

    The ICD-10-CM H18 group captures a range of nontraumatic corneal disorders affecting the cornea and adjacent ocular structures, including corneal opacities, endothelial disorders, and corneal dystrophies. These conditions target the anterior segment of the eye and can impact vision, ocular surface integrity, and refractive function. Accurate coding matters for correct classification of ocular morbidity and supports appropriate reimbursement and clinical recordkeeping.

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    When to Use

    Use codes from this group when documenting clinical encounters for patients with corneal disease such as scarring, edema, dystrophic changes, or recurrent corneal erosions. Select the most specific code available to reflect the exact diagnosis, laterality, and any associated complications.

    ICD-10-CM Codes

    155 rows

    ICD-10-CM CodeDescription
    H18.001Unspecified corneal deposit, right eye
    H18.002Unspecified corneal deposit, left eye
    H18.003Unspecified corneal deposit, bilateral
    H18.009Unspecified corneal deposit, unspecified eye
    H18.011Anterior corneal pigmentations, right eye
    H18.012Anterior corneal pigmentations, left eye
    H18.013Anterior corneal pigmentations, bilateral
    H18.019Anterior corneal pigmentations, unspecified eye
    H18.021Argentous corneal deposits, right eye
    H18.022Argentous corneal deposits, left eye
    H18.023Argentous corneal deposits, bilateral
    H18.029Argentous corneal deposits, unspecified eye
    H18.031Corneal deposits in metabolic disorders, right eye
    H18.032Corneal deposits in metabolic disorders, left eye
    H18.033Corneal deposits in metabolic disorders, bilateral
    H18.039Corneal deposits in metabolic disorders, unspecified eye
    H18.041Kayser-Fleischer ring, right eye
    H18.042Kayser-Fleischer ring, left eye
    H18.043Kayser-Fleischer ring, bilateral
    H18.049Kayser-Fleischer ring, unspecified eye

    Showing 1–20 of 155

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    DRG Codes

    2 rows

    DRG CodeDescription
    124Other Disorders of the Eye with MCC or Thrombolytic Agent
    125Other Disorders of the Eye without MCC

    Typical Clinical Scenarios

    • A middle-aged patient presents to the emergency department with sudden onset severe eye pain, photophobia, tearing, and decreased vision after rubbing the eye following a foreign body sensation. Slit-lamp exam shows an epithelial defect with underlying stromal haze consistent with an acute corneal ulcer/keratitis; a corneal culture is obtained and topical antibiotics are started. A diagnosis from this group is assigned for acute infectious or ulcerative corneal disorders such as microbial keratitis. Typical codes: H18.0, H18.10, H18.11.
    • An older adult with a history of chronic dry eye and prior ocular surface disease is followed in clinic for persistent corneal epithelial breakdown and central corneal opacity causing gradual vision decline. The clinician documents recurrent epithelial defects and corneal scarring consistent with chronic corneal dystrophy/degeneration requiring lubrication and possible surgical consultation. A chronic disorder of the cornea code is used to capture long-standing noninfectious corneal pathology. Typical codes: H18.40, H18.43, H18.49.
    • A postoperative patient returns after penetrating keratoplasty with complaints of decreased vision and foreign body sensation; exam reveals graft epithelial defects, neovascularization, and developing band keratopathy as a complication of prior surgery. The corneal complication related to previous surgical intervention or corneal graft is coded to document postoperative corneal changes and guide follow-up care. Typical codes: H18.50, H18.51, H18.52.

    Related Codes

    H15-DISORDERS-OF-SCLERA

    ICD-10-CM Code For Disorders Of Sclera: Group Overview

    H16-KERATITIS-CORNEAL-DISORDERS

    ICD-10-CM Code For Keratitis: Group Overview

    H17-CORNEAL-SCARS-AND-OPACITIES

    ICD-10-CM Code For Corneal Scars And Opacities: Group Overview

    H20-IRIDOCYCLITIS

    ICD-10-CM Code For Iridocyclitis: Group Overview

    H21-OTHER-DISORDERS-OF-IRIS

    ICD-10-CM Code For Other Disorders Of Iris And Ciliary Body: Group Overview

    H22-DISORDERS-OF-IRIS-AND-CILIARY-BODY

    ICD-10-CM Code For Disorders Of Iris And Ciliary Body In Diseases Classified Elsewhere: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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