| D44 | Neoplasm of uncertain behavior of endocrine glands | NON-BILLABLE CODE |
| D44.0 | Neoplasm of uncertain behavior of thyroid gland | BILLABLE CODE |
| D44.1 | Neoplasm of uncertain behavior of adrenal gland | NON-BILLABLE CODE |
| D44.10 | Neoplasm of uncertain behavior of unspecified adrenal gland | BILLABLE CODE |
| D44.11 | Neoplasm of uncertain behavior of right adrenal gland | BILLABLE CODE |
| D44.12 | Neoplasm of uncertain behavior of left adrenal gland | BILLABLE CODE |
| D44.2 | Neoplasm of uncertain behavior of parathyroid gland | BILLABLE CODE |
| D44.4 | Neoplasm of uncertain behavior of craniopharyngeal duct | BILLABLE CODE |
| D44.5 | Neoplasm of uncertain behavior of pineal gland | BILLABLE CODE |
| D44.6 | Neoplasm of uncertain behavior of carotid body | BILLABLE CODE |
| D44.7 | Neoplasm of uncertain behavior of aortic body and other paraganglia | BILLABLE CODE |
| D44.9 | Neoplasm of uncertain behavior of unspecified endocrine gland | BILLABLE CODE |
