ICD-10 Code D49.5 – Neoplasm of unspecified behavior of other genitourinary organs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D49.5 – Neoplasm of unspecified behavior of other genitourinary organs
What it is
D49.5 identifies a neoplasm in another genitourinary organ when the behavior is not specified as benign, malignant, or uncertain. Use it when the record names a mass or tumor but does not define its exact biologic behavior.
Clinical signs
Clinical features vary; refer to documentation. Patients may have a documented genitourinary mass, lesion, or tumor found on exam, imaging, or pathology, but the chart does not clarify whether it is benign or malignant.
When to use this code
Use this code when the provider documents a neoplasm in an “other” genitourinary organ and does not specify behavior. It is appropriate for incomplete diagnostic workups or when pathology is pending and the note supports an unspecified behavior classification.
Do not use for
Do not use D49.5 if the record clearly states benign, malignant, or uncertain behavior. If the site is a specific genitourinary organ with a more precise code, or if documentation is unclear, check documentation.
Coding tip
Confirm both the organ site and the stated behavior before assigning D49.5.