Atrophy of left orbit

This code signifies a reduction in the size or wasting away of the bony socket that houses the left eyeball. This atrophy can result from various underlying conditions affecting the orbital structures or surrounding tissues.

Use this code when documentation clearly indicates a diagnosis of atrophy specifically affecting the left orbit. This typically occurs in cases of trauma, chronic inflammation, tumors, or congenital anomalies impacting the orbital bone or its contents. Supporting documentation should include imaging reports (e.g., CT, MRI) confirming orbital volume loss.

• Ensure laterality is explicitly documented as "left" to support this specific code.
• Investigate and code any underlying cause of the orbital atrophy, if known and documented.
• Differentiate from enophthalmos (H05.4-), which describes a sunken eyeball within a normal-sized orbit, rather than atrophy of the orbit itself.