ICD-10 Code H35.389 – Toxic maculopathy, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.389 – Toxic maculopathy, unspecified eye
What it is
This code identifies toxic damage to the macula, the central part of the retina responsible for sharp vision, when the affected eye is not specified. Use it when documentation states toxic maculopathy without laterality.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include decreased central vision, blurred reading vision, or macular changes noted on ophthalmic exam or imaging, but the record should support retinal toxicity.
When to use this code
Use H35.389 when the provider documents toxic maculopathy and does not identify the right or left eye. It is appropriate for toxicity attributed to a medication, chemical exposure, or other toxic cause affecting the macula. If the note names the specific eye, use the laterality-specific code instead.
Do not use for
Do not use this code for macular disease without a toxic cause, such as age-related macular degeneration. Do not assign it when the documentation only says retinal disorder or visual disturbance; check documentation for a confirmed toxic maculopathy.
Coding tip
Verify both the toxic cause and whether the eye is specified before coding.