H49.0

Clinical Information

• Diseases of the oculomotor nerve or nucleus that result in weakness or paralysis of the superior rectus, inferior rectus, medial rectus, inferior oblique, or levator palpebrae muscles, or impaired parasympathetic innervation to the pupil. With a complete oculomotor palsy, the eyelid will be paralyzed, the eye will be in an abducted and inferior position, and the pupil will be markedly dilated. Commonly associated conditions include neoplasms, craniocerebral trauma, ischemia especially in association with diabetes mellitus), and aneurysmal compression. from Adams et al., Principles of Neurology, 6th ed, p270)

Details

• H49.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.

• The 2023 edition of ICD-10-CM H49.0 became effective on October 1, 2022.

• This is the American ICD-10-CM version of H49.0 – other international versions of ICD-10 H49.0 may differ.