ICD-10 Code H44.322 – Siderosis of eye, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.322 – Siderosis of eye, left eye
What it is
Siderosis of the left eye means iron has deposited in ocular tissues, usually after a retained iron-containing foreign body. It can damage eye structures over time if the source is not identified and removed.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced vision, iris discoloration, cataract, or retinal changes after an intraocular metallic foreign body.
When to use this code
Use H44.322 when the provider documents siderosis limited to the left eye. This code fits cases where iron-related ocular damage is diagnosed, even if the original foreign body is no longer visible. Code the documented laterality exactly as recorded.
Do not use for
Do not use this code for a foreign body in the eye without siderosis, or for right eye or bilateral involvement. Check documentation if the note only describes corneal rust staining or another nonspecific eye finding.
Coding tip
Look for explicit mention of siderosis and laterality in the assessment; if the record is unclear, query the provider.