Oth types of follicular lymphoma, intra-abd lymph nodes

This code signifies a diagnosis of follicular lymphoma that is not otherwise specified as grade 1, 2, or 3, and is specifically located within the lymph nodes of the abdominal cavity. Follicular lymphoma is a slow-growing type of non-Hodgkin lymphoma originating from B-lymphocytes. The "other types" designation indicates that the specific histological subtype beyond "follicular" is not further categorized or documented.

Use this code when documentation clearly states a diagnosis of follicular lymphoma, not specified as grade 1, 2, or 3, and explicitly identifies its primary or metastatic location as intra-abdominal lymph nodes. This code is appropriate when the pathologist's report confirms follicular lymphoma but does not provide a specific grade. Supporting documentation includes pathology reports, operative reports detailing lymph node excision, and physician notes.

• Ensure the documentation specifies "intra-abdominal lymph nodes" and not just "abdominal" to avoid ambiguity.
• Do not use this code if a specific grade (e.g., grade 1, 2, 3) of follicular lymphoma is documented; instead, use the more specific C82.0-C82.2 codes.
• Always sequence this code as the primary diagnosis if it is the reason for the encounter, or as a secondary diagnosis if it is a co-morbidity.