H52.22 Regular astigmatismNon-billable header with 4 child codes.
H52.221 Regular astigmatism, right eyeH52.222 Regular astigmatism, left eyeH52.223 Regular astigmatism, bilateralH52.229 Regular astigmatism, unspecified eyeH52.21 Irregular astigmatismH52.211 Irregular astigmatism, right eyeH52.212 Irregular astigmatism, left eyeH52.213 Irregular astigmatism, bilateralH52.219 Irregular astigmatism, unspecified eyeH52.22 Regular astigmatism (this code)H52.221 Regular astigmatism, right eyeH52.222 Regular astigmatism, left eyeH52.223 Regular astigmatism, bilateralH52.229 Regular astigmatism, unspecified eyeH52.3 Anisometropia and aniseikonia