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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Disorders Of The Eye And Adnexa 360-379 > Visual Disturbances 368.* > 2007 ICD-9-CM Diagnosis 368.40 Visual field defect unspecified  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 368.40 can be accessed here. A localized defect in the visual field bordered by an area of normal vision. This occurs with a variety of EYE DISEASES (e.g., RETINAL DISEASES and GLAUCOMA); OPTIC NERVE DISEASES, and other conditions. 368.40 is a specific code that can be used to specify a diagnosis 368.40 contains 3 index entries View the ICD-9-CM Volume 1 368.* hierarchy Index entries containing 368.40: Defect, defective 759.9 visual field 368.40 arcuate 368.43 heteronymous, bilateral 368.47 homonymous, bilateral 368.46 localized NEC 368.44 nasal step 368.44 peripheral 368.44 sector 368.43 Depression 311 visual field 368.40 Vision, visual field, limitation 368.40