ICD-10 Code D47.Z – Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D47.Z – Other specified neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
What it is
This code identifies a lymphoid, hematopoietic, or related tissue neoplasm with uncertain behavior that does not fit a more specific ICD-10-CM category. Use it when the record names a qualifying lesion but does not document malignant or benign behavior clearly.
Clinical signs
Clinical features vary; refer to documentation. These lesions are often identified by pathology, imaging, or specialist assessment as an abnormal proliferative process, but the behavior remains uncertain.
When to use this code
Use D47.Z when the provider documents an “other specified” neoplasm of uncertain behavior involving lymphoid or hematopoietic tissue and no more specific code applies. It is appropriate when the diagnosis is confirmed but the record does not support a malignant or benign code. Check documentation if the pathology report is incomplete.
Do not use for
Do not use this code for clearly malignant neoplasms, benign neoplasms, or unspecified masses without a documented neoplasm. If the tissue type or behavior is not stated, check documentation.
Coding tip
Code only when the provider explicitly documents uncertain behavior and the site/tissue type supports this category.