ICD-10 Code H52.219 – Irregular astigmatism, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.219 – Irregular astigmatism, unspecified eye
What it is
H52.219 identifies irregular astigmatism when the affected eye is not specified. This means the cornea or lens has uneven curvature that causes distorted or blurred vision.
Clinical signs
Patients may report blurred vision, ghosting, or image distortion that is not fully corrected by standard glasses. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents irregular astigmatism and does not identify the eye. It is appropriate for ophthalmology or optometry notes describing irregular corneal shape, keratoconus-related astigmatism, or post-surgical distortion when the record supports that diagnosis. Check documentation if the laterality is stated elsewhere.
Do not use for
Do not use it for regular astigmatism or when a different refractive error is documented. If the provider specifies right or left eye, code the laterality-specific option instead.
Coding tip
Confirm whether the record names the affected eye; unspecified laterality is the key reason to select H52.219.