| H40.00 | Preglaucoma, unspecified | NON-BILLABLE CODE |
| H40.001 | Preglaucoma, unspecified, right eye | BILLABLE CODE |
| H40.002 | Preglaucoma, unspecified, left eye | BILLABLE CODE |
| H40.003 | Preglaucoma, unspecified, bilateral | BILLABLE CODE |
| H40.009 | Preglaucoma, unspecified, unspecified eye | BILLABLE CODE |
| H40.01 | Open angle with borderline findings, low risk | NON-BILLABLE CODE |
| H40.011 | Open angle with borderline findings, low risk, right eye | BILLABLE CODE |
| H40.012 | Open angle with borderline findings, low risk, left eye | BILLABLE CODE |
| H40.013 | Open angle with borderline findings, low risk, bilateral | BILLABLE CODE |
| H40.019 | Open angle with borderline findings, low risk, unspecified eye | BILLABLE CODE |
| H40.02 | Open angle with borderline findings, high risk | NON-BILLABLE CODE |
| H40.021 | Open angle with borderline findings, high risk, right eye | BILLABLE CODE |
| H40.022 | Open angle with borderline findings, high risk, left eye | BILLABLE CODE |
| H40.023 | Open angle with borderline findings, high risk, bilateral | BILLABLE CODE |
| H40.029 | Open angle with borderline findings, high risk, unspecified eye | BILLABLE CODE |
| H40.03 | Anatomical narrow angle | NON-BILLABLE CODE |
| H40.031 | Anatomical narrow angle, right eye | BILLABLE CODE |
| H40.032 | Anatomical narrow angle, left eye | BILLABLE CODE |
| H40.033 | Anatomical narrow angle, bilateral | BILLABLE CODE |
| H40.039 | Anatomical narrow angle, unspecified eye | BILLABLE CODE |
| H40.04 | Steroid responder | NON-BILLABLE CODE |
| H40.041 | Steroid responder, right eye | BILLABLE CODE |
| H40.042 | Steroid responder, left eye | BILLABLE CODE |
| H40.043 | Steroid responder, bilateral | BILLABLE CODE |
| H40.049 | Steroid responder, unspecified eye | BILLABLE CODE |
| H40.05 | Ocular hypertension | NON-BILLABLE CODE |
| H40.051 | Ocular hypertension, right eye | BILLABLE CODE |
| H40.052 | Ocular hypertension, left eye | BILLABLE CODE |
| H40.053 | Ocular hypertension, bilateral | BILLABLE CODE |
| H40.059 | Ocular hypertension, unspecified eye | BILLABLE CODE |
| H40.06 | Primary angle closure without glaucoma damage | NON-BILLABLE CODE |
| H40.061 | Primary angle closure without glaucoma damage, right eye | BILLABLE CODE |
| H40.062 | Primary angle closure without glaucoma damage, left eye | BILLABLE CODE |
| H40.063 | Primary angle closure without glaucoma damage, bilateral | BILLABLE CODE |
| H40.069 | Primary angle closure without glaucoma damage, unspecified eye | BILLABLE CODE |
