ICD-10 Code D47.9 – Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D47.9 – Neoplasm of uncertain behavior of lymphoid, hematopoietic and related tissue, unspecified
What it is
D47.9 identifies a neoplasm of uncertain behavior involving lymphoid, hematopoietic, or related tissue when the exact site or type is not specified. Use it when documentation confirms an indeterminate blood or lymphatic tissue growth, but not a more precise diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Records may note abnormal lymphoid or hematopoietic tissue growth, but the behavior is not clearly benign or malignant, and the specific tissue involved is not identified.
When to use this code
Use D47.9 when the clinician documents an unspecified neoplasm of uncertain behavior in lymphoid, hematopoietic, or related tissue. This is appropriate when the chart lacks a more detailed anatomic site or histologic description. If later documentation provides a more specific diagnosis, code that instead.
Do not use for
Do not use D47.9 if the record identifies a definite benign or malignant neoplasm, or a more specific lymphoid or hematopoietic disorder. Check documentation when the pathology report or provider note gives a clearer code choice.
Coding tip
Query for site and pathology details before assigning D47.9, because unspecified wording often hides a more specific code.