Follicular lymphoma grade III, unspecified, spleen

This code signifies a diagnosis of follicular lymphoma, a type of non-Hodgkin lymphoma, specifically identified as Grade III. The primary site of involvement for this malignancy is the spleen, with the grade being unspecified as to whether it's Grade IIIa or IIIb.

This code is appropriate when documentation clearly states a diagnosis of follicular lymphoma, Grade III, with splenic involvement. Pathological reports confirming the follicular lymphoma and its grade, along with imaging or clinical notes indicating splenic involvement, are necessary to support its use.

• Ensure the documentation specifies "Grade III" for follicular lymphoma; otherwise, a different code for unspecified grade may be more appropriate.
• Verify that the spleen is explicitly documented as the primary or involved site of the lymphoma.
• Distinguish this from other grades of follicular lymphoma (e.g., Grade I, Grade II) and other types of non-Hodgkin lymphoma.