Folds in Descemet's membrane, unspecified eye

This code describes the presence of abnormal folds or wrinkles in Descemet's membrane, the innermost layer of the cornea, in an unspecified eye. These folds can be a sign of corneal edema, inflammation, or trauma, affecting corneal clarity and potentially vision.

Use this code when documentation indicates the presence of Descemet's membrane folds without specifying laterality (right or left eye). This is often observed during slit lamp examination in conditions like corneal hydrops, post-surgical corneal edema, or endothelial dysfunction.

• Avoid using this code if the laterality of the affected eye is documented; instead, choose the specific right (H18.321) or left (H18.322) eye code.
• Always code the underlying cause of the Descemet's folds, such as corneal edema (H18.2x) or other corneal disorders, as a primary diagnosis if known.
• Ensure the physician's documentation clearly states "folds in Descemet's membrane" or similar terminology to support this diagnosis.