Heteronymous hemianopia or quadrant anopia

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Heteronymous field defects present opposite patterns in the two eyes. They may be caused by chiasmal lesions.

sections/codes in this section (9D42.7-9D42.7)

• Bi-nasal defects heteronymous hemianopia or quadrant anopia  (9D42.70)
• Bi-temporal defects heteronymous hemianopia or quadrant anopia  (9D42.71)
• Other specified heteronymous hemianopia or quadrant anopia  (9D42.7Y)
• Heteronymous hemianopia or quadrant anopia, unspecified  (9D42.7Z)

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