Unspecified astigmatism, left eye

This code signifies an uncorrected refractive error of the left eye where light entering the eye does not focus uniformly on the retina, resulting in blurred or distorted vision at all distances. The specific type or cause of the astigmatism is not documented or determined.

Use this code when the patient presents with symptoms of astigmatism in the left eye, and the ophthalmologist or optometrist has diagnosed astigmatism but has not specified its type (e.g., myopic, hyperopic, mixed, regular, irregular). Documentation should clearly indicate astigmatism affecting only the left eye without further specificity.

• Do not use this code if the type of astigmatism (e.g., regular, irregular, myopic) is documented; instead, select a more specific code from the H52.2 category.
• Ensure the documentation explicitly states "left eye" and lacks further detail regarding the astigmatism type.
• If both eyes are affected with unspecified astigmatism, use H52.203 (Unspecified astigmatism, bilateral).