Irregular astigmatism, right eye

This code signifies an abnormal curvature of the cornea or lens in the right eye, where the refractive power varies irregularly across different meridians. Unlike regular astigmatism, this irregularity cannot be fully corrected with standard spherical and cylindrical lenses. This condition often results in distorted or blurred vision.

Apply this code when documentation specifies irregular astigmatism affecting the patient's right eye. This diagnosis is typically made following a comprehensive ophthalmic examination, including corneal topography or wavefront analysis, which reveals non-uniform corneal or lenticular surface irregularities.

• Ensure laterality is clearly documented as "right eye" to support this specific code.
• Distinguish from H52.212 (irregular astigmatism, left eye) and H52.213 (irregular astigmatism, bilateral).
• Look for diagnostic terms like "keratoconus," "corneal scarring," or "post-surgical astigmatism" when irregular astigmatism is present in the right eye.