Follicular lymphoma grade II, nodes of axilla and upper limb

This code signifies a specific type of non-Hodgkin lymphoma, follicular lymphoma, which is characterized by a grade II cellular differentiation. The disease is localized to the lymph nodes found in the axillary region and the upper extremities. This indicates a moderate-grade malignancy originating from B-lymphocytes within the lymphatic system.

Use this code when documentation confirms a pathological diagnosis of follicular lymphoma, specifically identified as grade II. The medical record must also clearly state the involvement of lymph nodes within the axilla or upper limb. This code is appropriate for initial diagnosis, staging, and subsequent encounters where this specific site and grade are confirmed.

• Ensure the pathology report explicitly states "follicular lymphoma grade II" and clearly identifies axillary or upper limb lymph node involvement.
• Do not use this code for other grades of follicular lymphoma or if the primary site is not specified as axillary/upper limb lymph nodes.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter, followed by any associated symptoms or complications.