Follicular lymphoma grade III, unspecified, unspecified site

This code identifies a specific type of non-Hodgkin lymphoma, follicular lymphoma, that has been histologically graded as Grade III. It indicates that the primary anatomical location of the lymphoma is not specified in the medical record. Follicular lymphoma is characterized by a nodular or follicular growth pattern of malignant lymphocytes.

This code is appropriate when documentation confirms a diagnosis of follicular lymphoma, specifically graded as Grade III, but the physician has not documented the primary site of involvement. This may occur in cases where the diagnosis is made from a biopsy without clear identification of the originating anatomical location, or when the disease is widespread without a single primary focus.

• Ensure the pathology report explicitly states "follicular lymphoma Grade III."
• Only use this code when the anatomical site is truly unspecified; if a site is documented, a more specific code should be used.
• Consider sequencing this code after any codes for symptoms or complications related to the lymphoma, if applicable.