2006 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 > Disorders Of Refraction And Accommodation 367.* > 2006 ICD-9-CM Diagnosis 367.20 Astigmatism unspecified View the most recent version of ICD-9-CM 367.20 Unequal curvature of the refractive surfaces of the eye. Thus a point source of light cannot be brought to a point focus on the retina but is spread over a more or less diffuse area. This results from the radius of curvature in one plane being longer or shorter than the radius at right angles to it. 367.20 is a specific code that can be used to specify a diagnosis 367.20 contains 2 index entries View the ICD-9-CM Volume 1 367.* hierarchy  Index entries containing 367.20: Astigmatism (compound) (congenital) 367.20 irregular 367.22 regular 367.21 Error refractive 367.9 astigmatism (see also Astigmatism) 367.20