ICD-10 Code H52.222 – Regular astigmatism, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.222 – Regular astigmatism, left eye
What it is
H52.222 identifies regular astigmatism limited to the left eye. It means the cornea or lens has a predictable curvature mismatch that blurs vision in one direction.
Clinical signs
Clinical features vary; refer to documentation. Common findings include blurred or distorted vision in the left eye and reduced clarity at distance or near, often corrected with refraction.
When to use this code
Use this code when the provider documents regular astigmatism specifically in the left eye. It is appropriate for ophthalmology or optometry notes that identify the eye and describe a refractive error. If the record only says astigmatism without laterality, check documentation.
Do not use for
Do not use it for unspecified astigmatism, astigmatism in the right eye, or mixed refractive errors unless the left eye diagnosis is clearly documented. Check documentation if the condition is irregular or post-surgical.
Coding tip
Code laterality exactly as documented, and verify that “regular” astigmatism is stated before assigning H52.222.