ICD-10-CM > E00-E89 > E20-E35 > E23 E23 Hypofunction and other disorders of the pituitary gland Non-Billable/Non-Specific Includes the listed conditions whether the disorder is in the pituitary or the hypothalamus Type 1 Excludes postprocedural hypopituitarism (E89.3)short stature due to endocrine disorder (E34.3-) Codes E23.0HypopituitarismE23.1Drug-induced hypopituitarismE23.2Diabetes insipidusE23.3Hypothalamic dysfunction, not elsewhere classifiedE23.6Other disorders of pituitary glandE23.7Disorder of pituitary gland, unspecified