ICD-10 Code D35.2 – Benign neoplasm of pituitary gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D35.2 – Benign neoplasm of pituitary gland
What it is
D35.2 identifies a noncancerous tumor of the pituitary gland. It means the growth is benign, but it may still affect pituitary function or nearby structures.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include endocrine symptoms or mass effects such as headache or visual disturbance, depending on tumor size and hormone activity.
When to use this code
Use D35.2 when the provider documents a benign pituitary neoplasm, including pituitary adenoma, and no malignant behavior is reported. Code it from confirmed imaging, pathology, or specialist assessment when the diagnosis is established. Check documentation if the record only says pituitary mass or lesion.
Do not use for
Do not use this code for malignant pituitary tumors or uncertain lesions without a confirmed benign diagnosis. It is also wrong for nonspecific endocrine disorders unless the pituitary neoplasm is clearly documented.
Coding tip
Verify whether the provider states adenoma, benign tumor, or mass effect, and code the documented diagnosis rather than the imaging impression alone.