ICD-10-CM > H00-H59 > H40-H42 > H40 > H40.0 H40.0 Glaucoma suspect Non-Billable/Non-Specific Codes H40.00Preglaucoma, unspecifiedH40.001Preglaucoma, unspecified, right eyeH40.002Preglaucoma, unspecified, left eyeH40.003Preglaucoma, unspecified, bilateralH40.009Preglaucoma, unspecified, unspecified eyeH40.01Open angle with borderline findings, low riskH40.011Open angle with borderline findings, low risk, right eyeH40.012Open angle with borderline findings, low risk, left eyeH40.013Open angle with borderline findings, low risk, bilateralH40.019Open angle with borderline findings, low risk, unspecified eyeH40.02Open angle with borderline findings, high riskH40.021Open angle with borderline findings, high risk, right eyeH40.022Open angle with borderline findings, high risk, left eyeH40.023Open angle with borderline findings, high risk, bilateralH40.029Open angle with borderline findings, high risk, unspecified eyeH40.03Anatomical narrow angleH40.031Anatomical narrow angle, right eyeH40.032Anatomical narrow angle, left eyeH40.033Anatomical narrow angle, bilateralH40.039Anatomical narrow angle, unspecified eyeH40.04Steroid responderH40.041Steroid responder, right eyeH40.042Steroid responder, left eyeH40.043Steroid responder, bilateralH40.049Steroid responder, unspecified eyeH40.05Ocular hypertensionH40.051Ocular hypertension, right eyeH40.052Ocular hypertension, left eyeH40.053Ocular hypertension, bilateralH40.059Ocular hypertension, unspecified eyeH40.06Primary angle closure without glaucoma damageH40.061Primary angle closure without glaucoma damage, right eyeH40.062Primary angle closure without glaucoma damage, left eyeH40.063Primary angle closure without glaucoma damage, bilateralH40.069Primary angle closure without glaucoma damage, unspecified eye