ICD-10 Code H18.03 – Corneal deposits in metabolic disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H18.03 – Corneal deposits in metabolic disorders
What it is
H18.03 identifies corneal deposits caused by an underlying metabolic disorder. Use it when documentation links the corneal finding to a metabolic condition rather than to trauma, infection, or a separate eye disease.
Clinical signs
Clinical features vary; refer to documentation. Typical records may describe visible corneal opacities or deposits on eye examination, sometimes noted during evaluation for a known systemic metabolic disorder.
When to use this code
Use this code when the provider documents corneal deposits attributable to a metabolic disorder, such as a systemic condition affecting the cornea. It may appear in ophthalmology notes, consults, or problem lists when the eye finding is clearly linked to the metabolic diagnosis. Check documentation if the cause is not stated.
Do not use for
Do not use H18.03 for nonspecific corneal opacities without a metabolic cause, or for deposits due to trauma, infection, or medication effects. If the record does not support the metabolic link, check documentation.
Coding tip
Assign H18.03 only when the chart explicitly connects the corneal deposits to a metabolic disorder.