ICD-10 Code H52.201 – Unspecified astigmatism, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.201 – Unspecified astigmatism, right eye
What it is
This code identifies astigmatism in the right eye when the type is not further specified. It means the cornea or lens has an irregular shape that blurs vision, but the record does not document the exact astigmatism category.
Clinical signs
Patients may report blurred or distorted vision, eyestrain, or headaches, especially with reading or distance viewing. Clinical features vary; refer to documentation and eye examination findings.
When to use this code
Use H52.201 when the provider documents astigmatism affecting only the right eye and does not specify whether it is regular, irregular, or another subtype. It is also appropriate when the note simply states “astigmatism, right eye” without further detail. If laterality or type is clarified, code the documented specificity.
Do not use for
Do not use this code for left eye, bilateral, or unspecified laterality astigmatism. Also avoid it when the chart identifies a more specific astigmatism type or another refractive error instead.
Coding tip
Check the eye laterality and the exact wording in the assessment before assigning H52.201.