Keratoconus, stable, unspecified eye

This code signifies a non-inflammatory, progressive thinning and bulging of the cornea into a cone-like shape, specifically when the condition has been determined to be stable. "Stable" indicates that there has been no documented progression of the keratoconus over a defined period, typically at least 12-24 months. This diagnosis applies when the affected eye is not specified.

Use this code when documentation confirms a diagnosis of keratoconus that has been assessed and determined to be stable, meaning no significant changes in corneal topography or visual acuity have occurred. This is often used for ongoing management and monitoring of previously diagnosed keratoconus. Documentation should clearly state "stable keratoconus" or provide evidence of stability over time.

• Ensure documentation explicitly states "stable" keratoconus; otherwise, a code for unspecified or unstable keratoconus may be more appropriate.
• If the affected eye is known, use a more specific code (e.g., H18.611 for right eye, H18.612 for left eye, H18.613 for bilateral).
• Do not confuse with codes for other corneal ectasias or corneal degenerations.