ICD-10 Code H52.229 – Regular astigmatism, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.229 – Regular astigmatism, unspecified eye
What it is
H52.229 identifies regular astigmatism when the affected eye is not specified. It means the cornea or lens has a consistent curvature mismatch that causes blurred or distorted vision.
Clinical signs
Patients may report blurry vision, eye strain, or trouble seeing clearly at distance or near. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents regular astigmatism but does not identify the right or left eye. It is appropriate for routine eye exams, refraction findings, or problem lists when laterality is missing. Check documentation if the note specifies a more precise eye.
Do not use for
Do not use it for irregular astigmatism or other refractive errors such as myopia or hyperopia. Do not assign it when the provider documents a specific eye and a laterality code is available.
Coding tip
Confirm whether the provider documented right, left, or unspecified eye before selecting H52.229.