ICD-10 Code H52.213 – Irregular astigmatism, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.213 – Irregular astigmatism, bilateral
What it is
H52.213 identifies irregular astigmatism affecting both eyes. It means the cornea or lens has an uneven shape that distorts vision in a way that standard glasses may not fully correct.
Clinical signs
Patients may report blurred or distorted vision, ghosting, glare, or poor quality of vision. Clinical features vary; refer to documentation.
When to use this code
Use H52.213 when the provider documents bilateral irregular astigmatism as the diagnosis. It is appropriate when the chart clearly states the condition in both eyes, including postoperative, traumatic, or corneal-surface causes if documented as irregular astigmatism.
Do not assign it for routine refractive error without irregularity. If laterality is unclear or the note only says astigmatism, check documentation before coding.
Do not use for
Do not use this code for regular astigmatism, unspecified astigmatism, or a unilateral finding. If the record does not confirm both eyes, choose the documented laterality or check documentation.
Coding tip
Code only when the provider explicitly documents bilateral irregular astigmatism; laterality matters here.