H18.719
Corneal ectasia, unspecified eye
Clinical Classification Guidelines
Medical Intelligence & Overview
Corneal ectasia is a condition characterized by the thinning and bulging of the cornea, the clear front surface of the eye. When the cornea becomes weakened and misshapen, it can distort vision and cause discomfort. The ICD-10 code H18.719 specifically refers to an unspecified eye affected by corneal ectasia, indicating that detailed distinctions between the right or left eye are not specified. This condition may develop gradually or as a result of trauma or previous eye surgery and can significantly impact visual acuity if left untreated.
Causes & Symptoms
Clinical Causes: Keratoconus, a progressive thinning of the cornea often beginning in adolescence or early adulthood. Previous eye surgeries, such as laser vision correction procedures, which may weaken the cornea. Eye injuries that cause structural damage or stress to the cornea. Genetic predisposition, with some cases running in families. Inflammatory eye conditions leading to weakening of the corneal tissue.
Key Symptoms: Blurred or distorted vision that worsens over time. Increased sensitivity to light and glare. Frequent changes in eyeglass or contact lens prescriptions. Eye pain or discomfort in some cases. The appearance of a bulging or cone-shaped cornea on examination. Difficulty seeing at night or in low-light conditions.
Diagnostic & Treatment
Diagnosis Path: Corneal topography, which maps the surface curvature of the cornea to identify irregularities. Slit-lamp examination to assess corneal thickness and structural integrity. Retinal and anterior segment imaging if needed for detailed visualization. Refraction tests to determine the impact on vision and appropriate corrective measures.
Treatment Protocols: Specialty contact lenses, such as scleral lenses, which vault the irregular cornea to provide better vision. Corneal cross-linking, a minimally invasive procedure that uses riboflavin and ultraviolet light to strengthen corneal tissue and halt progression. Intracorneal ring segments, small implants inserted into the cornea to change its shape and improve visual acuity. Amniotic membrane transplantation, used in some cases to promote healing and stabilize the cornea. Corneal transplantation, required if the ectasia causes severe damage or vision loss uncorrectable by other means.
Clinical Advice & FAQs
Billing Guidance
Is H18.719 a billable ICD-10 code?
Yes, H18.719 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H18.719?
Clinical documentation must specify the nature of Corneal ectasia, unspecified eye and any associated comorbidities for accurate reporting.
Cite this Clinical Reference