Myogenic ptosis of bilateral eyelids

This code signifies a drooping of both upper eyelids caused by a primary muscle weakness or dysfunction, rather than a neurological issue or aponeurotic defect. This condition can impair vision and is often congenital or develops later in life due to various muscular disorders.

Apply this code when documentation explicitly states "myogenic ptosis" affecting both eyelids. Supporting documentation should include findings from an ophthalmological examination confirming muscle weakness as the etiology, often differentiating it from aponeurotic or neurogenic causes.

• Ensure the documentation specifies "bilateral" involvement; unilateral cases require different codes.
• Distinguish carefully between myogenic, neurogenic (e.g., oculomotor nerve palsy), and aponeurotic ptosis, as each has distinct ICD-10-CM codes.
• Look for underlying systemic muscular disorders that may be contributing to the ptosis and code them additionally if present and documented.