ICD-10 Code D47 – Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D47 – Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
What it is
D47 is a category for lymphoid, hematopoietic, or related tissue neoplasms whose behavior is uncertain. Use it when the record identifies an abnormal growth but does not support a clearly benign or malignant diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Records may describe an incidental mass, abnormal tissue proliferation, or a lesion under evaluation without definitive malignant behavior.
When to use this code
Use D47 when the provider documents a neoplasm of uncertain behavior involving lymphoid or hematopoietic tissue and no more specific code is stated. It may fit pathology or specialist notes that confirm uncertain biologic behavior. Check documentation if the site or exact entity is unclear.
Do not use for
Do not use D47 for clearly benign or malignant neoplasms, or when a more specific diagnosis is documented. If the record only states a suspected condition, check documentation and code the confirmed finding instead.
Coding tip
Always code the most specific neoplasm term in the note; if behavior is not explicit, verify whether a site-specific code is available before defaulting to D47.