Unspecified B-cell lymphoma, intrapelvic lymph nodes

This code signifies a malignant neoplasm originating from B-lymphocytes, specifically when the exact subtype of B-cell lymphoma is not specified in the medical record. The tumor is located within the intrapelvic lymph nodes, which are lymph nodes situated inside the pelvic cavity.

Use this code when documentation confirms a diagnosis of B-cell lymphoma affecting the intrapelvic lymph nodes, but the pathologist has not yet determined the specific B-cell subtype (e.g., diffuse large B-cell lymphoma, follicular lymphoma). This code is appropriate when the physician explicitly states "unspecified B-cell lymphoma" or similar terminology for this anatomical site.

• Do not use this code if a more specific B-cell lymphoma subtype is documented; always code to the highest level of specificity.
• Ensure the documentation clearly identifies the intrapelvic lymph nodes as the primary site or a site of involvement.
• Consider sequencing this code after any codes for symptoms or complications related to the lymphoma, if applicable.