ICD-10 Code D44.3 – Neoplasm of uncertain behavior of pituitary gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D44.3 – Neoplasm of uncertain behavior of pituitary gland
What it is
This code identifies a pituitary gland tumor whose behavior is uncertain, meaning the record does not confirm whether it is benign or malignant. Use it when documentation specifically describes uncertain behavior of the pituitary gland.
Clinical signs
Clinical features vary; refer to documentation. Pituitary lesions may be found on imaging or evaluated because of endocrine symptoms, visual complaints, or incidental discovery during workup.
When to use this code
Use D44.3 when the provider documents a neoplasm of uncertain behavior in the pituitary gland or pituitary region and does not classify it as benign or malignant. It is appropriate for pathology, imaging, or specialist notes that support uncertain behavior. Check documentation if the site or behavior is unclear.
Do not use for
Do not use this code for pituitary adenomas documented as benign, malignant pituitary tumors, or lesions in another endocrine site. If the record does not clearly state uncertain behavior, check documentation.
Coding tip
Code the documented behavior and site exactly; if either is missing, query the provider before assigning D44.3.