ICD-10 Code D44.10 – Neoplasm of uncertain behavior of unspecified adrenal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D44.10 – Neoplasm of uncertain behavior of unspecified adrenal gland
What it is
This code identifies a neoplasm in the adrenal gland whose behavior is uncertain, meaning the pathology cannot yet be classified as clearly benign or malignant. Use it when documentation specifies an adrenal mass or tumor of uncertain behavior without laterality.
Clinical signs
Clinical features vary; refer to documentation. Patients may have an incidental adrenal mass on imaging or symptoms related to hormone production, mass effect, or both, but the code itself is based on the documented diagnosis.
When to use this code
Use D44.10 when the provider documents a neoplasm of uncertain behavior involving the adrenal gland and does not specify right or left side. It also fits cases where the lesion is described as indeterminate or of uncertain behavior in the adrenal gland. Check documentation if the record instead supports a benign, malignant, or secondary neoplasm.
Do not use for
Do not use this code for clearly benign adrenal tumors, malignant adrenal neoplasms, or metastatic disease to the adrenal gland. If laterality is documented, choose the more specific adrenal code.
Coding tip
Verify whether the provider documented laterality and behavior before assigning D44.10, because unspecified use is appropriate only when those details are absent.