Vision providers are required to use ICD diagnosis code Z01.00 (Encounter for examination of eyes and vision without abnormal findings) or Z01.01 (Encounter for examination of eyes and vision with abnormal findings) when an examination is done for a routine purpose, such as to check an eyeglass prescription.
Vision providers are required to use ICD diagnosis code Z46.0 (Encounter for fitting and adjustment of spectacles and contact lenses) when dispensing eyeglasses. Opticians are required to use Z46.0 even when the eyeglasses are prescribed by another provider. However, Z46.0 may not be used as either the primary or sole diagnosis on a PA/RF.