Follicular lymphoma, unsp, nodes of axilla and upper limb

This code signifies a diagnosis of follicular lymphoma, a slow-growing type of non-Hodgkin lymphoma, specifically when the primary or only known site of involvement is the lymph nodes located in the axilla (armpit) and/or the upper limb. The "unspecified" nature indicates that the specific grade or stage of the follicular lymphoma is not documented.

Apply this code when documentation confirms follicular lymphoma affecting the axillary or upper limb lymph nodes, and no further specificity regarding the grade or stage of the lymphoma is provided. This is appropriate for initial diagnoses or follow-up encounters where the anatomical site is confirmed, but the precise histological grade or stage is either unknown or not yet determined.

• Ensure documentation explicitly states involvement of axillary and/or upper limb lymph nodes.
• Avoid using this code if a specific grade (e.g., Grade I, II, III) of follicular lymphoma is documented; instead, use the more specific C82.0-C82.2- codes.
• If the lymphoma is disseminated or involves multiple sites, consider codes that reflect multifocal involvement or the primary site if clearly identified.