Corneal staphyloma, bilateral

This code represents a bulging or protrusion of the cornea, affecting both eyes. This ectatic condition results from thinning and weakening of the corneal tissue, often due to inflammation or trauma, leading to a localized outward bulge. The staphyloma typically includes uveal tissue.

Use this code when documentation clearly indicates the presence of corneal staphyloma in both the right and left eyes. This diagnosis is typically made via slit-lamp examination and confirmed by an ophthalmologist. Supporting documentation should specify the bilateral involvement.

• Ensure documentation explicitly states "bilateral" involvement; otherwise, laterality-specific codes (H18.721, H18.722) or unspecified (H18.729) may be more appropriate.
• Distinguish corneal staphyloma from keratoconus (H18.6x), which is a different form of corneal ectasia with distinct clinical features.
• Code any underlying cause or associated conditions, such as corneal ulcer or trauma, in addition to the staphyloma, following sequencing guidelines.