ICD-10 Code H52.202 – Unspecified astigmatism, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.202 – Unspecified astigmatism, left eye
What it is
H52.202 identifies astigmatism in the left eye when the type is not specified. It means the eye’s optical focus is uneven, causing blurred or distorted vision.
Clinical signs
Typical findings include blurred vision, eye strain, or difficulty seeing clearly at near or distance. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents astigmatism affecting only the left eye and does not state whether it is regular, irregular, or another subtype. It is appropriate when the provider confirms astigmatism but gives no further detail. Check documentation if laterality or type is unclear.
Do not use for
Do not use H52.202 for astigmatism documented in both eyes or in the right eye. Do not use it when the chart specifies a different refractive error or a more specific astigmatism code.
Coding tip
Verify laterality and subtype in the assessment before assigning H52.202.