Drug-induced hypopituitarism

This diagnosis code signifies a condition where the pituitary gland's function is impaired due to the adverse effects of a medication. This impairment can lead to a deficiency in one or more pituitary hormones, impacting various bodily functions.

Assign this code when documentation clearly links hypopituitarism to a specific drug. This typically occurs when a patient develops symptoms of pituitary insufficiency following the initiation or change of a medication, and other causes have been ruled out.

• Always identify the specific drug causing the hypopituitarism using an external cause code (T36-T50 with a 5th or 6th character of 5).
• Code any specific hormone deficiencies (e.g., secondary adrenal insufficiency, hypothyroidism) as secondary diagnoses.
• Ensure the provider's documentation explicitly states the drug as the etiology of the hypopituitarism.