Myopathy of extraocular muscles, unspecified orbit

This code describes a general disease or disorder affecting the muscles responsible for eye movement, where the specific type of myopathy is not identified. It indicates a primary muscle dysfunction within the extraocular muscles of an unspecified eye.

Use this code when documentation clearly states "myopathy of extraocular muscles" but lacks further specificity regarding the type of myopathy (e.g., inflammatory, toxic, congenital) or the affected orbit. This code is appropriate when the physician has diagnosed a myopathy but has not yet determined its precise etiology or laterality.

• Avoid using this code if a more specific diagnosis of extraocular muscle myopathy (e.g., inflammatory, toxic, congenital) is documented.
• Do not use for strabismus or other ocular motility disorders unless a primary myopathy is explicitly stated as the underlying cause.
• Query the provider for laterality (right, left, bilateral) if not documented, as more specific codes exist for specified orbits.