ICD-10 Code H44.639 – Retained (old) magnetic foreign body in lens, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H44.639 – Retained (old) magnetic foreign body in lens, unspecified eye
What it is
This code identifies an old, retained magnetic foreign body located in the lens of an unspecified eye. Use it when documentation shows the object remains in the lens and the affected eye is not specified.
Clinical signs
Clinical features vary; refer to documentation. Records may note a history of ocular foreign body with persistent lens involvement, reduced vision, or lens opacity related to the retained object.
When to use this code
Use this code when the provider documents a retained, old magnetic foreign body in the lens and does not specify right or left eye. It applies to chronic or previously known lens foreign bodies, not a new injury. If the record identifies the eye, choose the laterality-specific code instead.
Do not use for
Do not use this code for a foreign body in the cornea, conjunctiva, or other eye structures. Do not use it when the object is acute, removed, or documented in a specific eye without using the unspecified-eye code.
Coding tip
Check the note for laterality and whether the foreign body is current or old before assigning H44.639.