Crystalline deposits in vitreous body, left eye

This code signifies the presence of crystalline deposits within the vitreous humor of the left eye. These deposits, often appearing as sparkling or shimmering opacities, can be a benign finding (e.g., asteroid hyalosis) or indicative of underlying metabolic or inflammatory conditions.

Apply this code when documentation explicitly states crystalline deposits are observed in the vitreous of the left eye. This is commonly identified during a dilated fundus examination or B-scan ultrasonography. Ensure the laterality is clearly specified as "left eye."

• Always confirm laterality; separate codes exist for the right eye (H43.21) and bilateral involvement (H43.23).
• Do not confuse with other vitreous opacities like vitreous hemorrhage (H43.1-) or other degenerative changes (H43.8-).
• If an underlying systemic condition is identified as the cause (e.g., diabetes, hyperlipidemia), code that condition as a primary diagnosis if it is the reason for the encounter, with H43.22 as a secondary diagnosis.