2008 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.* > 2008 ICD-9-CM Diagnosis 367.20 Astigmatism 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 Therefore, this code may be out of date.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 367.20 can be accessed here. 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. (Dorland, 27th ed) 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 ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 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