Retained (old) magnetic fb in vitreous body, bilateral

This code describes the presence of a magnetic foreign body that has been lodged in the vitreous humor of both eyes for an extended period. This condition can lead to chronic inflammation, retinal damage, or vision impairment due to the foreign object's persistent presence.

Use this code when documentation clearly indicates a magnetic foreign body has been retained in the vitreous of both eyes, and it is considered "old" or chronic. This typically applies to cases where the foreign body was not immediately removed after the initial injury. Documentation should specify the magnetic nature of the foreign body and its bilateral location.

• Ensure the documentation specifies "magnetic" and "retained" (old) to differentiate from non-magnetic or acute foreign bodies.
• Verify laterality; this code is specifically for bilateral involvement. Do not use for unilateral cases.
• Consider sequencing this code after any acute injury codes if the foreign body resulted from a recent trauma, but is now considered retained.