| D31 | Benign neoplasm of eye and adnexa | NON-BILLABLE CODE |
| D31.0 | Benign neoplasm of conjunctiva | NON-BILLABLE CODE |
| D31.00 | Benign neoplasm of unspecified conjunctiva | BILLABLE CODE |
| D31.01 | Benign neoplasm of right conjunctiva | BILLABLE CODE |
| D31.02 | Benign neoplasm of left conjunctiva | BILLABLE CODE |
| D31.1 | Benign neoplasm of cornea | NON-BILLABLE CODE |
| D31.10 | Benign neoplasm of unspecified cornea | BILLABLE CODE |
| D31.11 | Benign neoplasm of right cornea | BILLABLE CODE |
| D31.12 | Benign neoplasm of left cornea | BILLABLE CODE |
| D31.2 | Benign neoplasm of retina | NON-BILLABLE CODE |
| D31.20 | Benign neoplasm of unspecified retina | BILLABLE CODE |
| D31.21 | Benign neoplasm of right retina | BILLABLE CODE |
| D31.22 | Benign neoplasm of left retina | BILLABLE CODE |
| D31.3 | Benign neoplasm of choroid | NON-BILLABLE CODE |
| D31.30 | Benign neoplasm of unspecified choroid | BILLABLE CODE |
| D31.31 | Benign neoplasm of right choroid | BILLABLE CODE |
| D31.32 | Benign neoplasm of left choroid | BILLABLE CODE |
| D31.4 | Benign neoplasm of ciliary body | NON-BILLABLE CODE |
| D31.40 | Benign neoplasm of unspecified ciliary body | BILLABLE CODE |
| D31.41 | Benign neoplasm of right ciliary body | BILLABLE CODE |
| D31.42 | Benign neoplasm of left ciliary body | BILLABLE CODE |
| D31.5 | Benign neoplasm of lacrimal gland and duct | NON-BILLABLE CODE |
| D31.51 | Benign neoplasm of right lacrimal gland and duct | BILLABLE CODE |
| D31.52 | Benign neoplasm of left lacrimal gland and duct | BILLABLE CODE |
| D31.6 | Benign neoplasm of unspecified site of orbit | NON-BILLABLE CODE |
| D31.60 | Benign neoplasm of unspecified site of unspecified orbit | BILLABLE CODE |
| D31.61 | Benign neoplasm of unspecified site of right orbit | BILLABLE CODE |
| D31.62 | Benign neoplasm of unspecified site of left orbit | BILLABLE CODE |
| D31.9 | Benign neoplasm of unspecified part of eye | NON-BILLABLE CODE |
| D31.90 | Benign neoplasm of unspecified part of unspecified eye | BILLABLE CODE |
| D31.91 | Benign neoplasm of unspecified part of right eye | BILLABLE CODE |
| D31.92 | Benign neoplasm of unspecified part of left eye | BILLABLE CODE |
