H44.321 (Siderosis of eye, right eye) compared with H44.322 (Siderosis of eye, left eye), from the official CMS tabular data. H44.321 and H44.322 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. H44.321 and H44.322 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| H44.321Siderosis of eye, right eye | H44.322Siderosis of eye, left eye | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Siderosis of eye, right eye is a billable ICD-10-CM diagnosis code (H44.321). | Siderosis of eye, left eye is a billable ICD-10-CM diagnosis code (H44.322). |
| Includes | disorders affecting multiple structures of eye | disorders affecting multiple structures of eye |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources