Follicular lymphoma grade II, lymph nodes of multiple sites

This code signifies a diagnosis of follicular lymphoma, a slow-growing type of non-Hodgkin lymphoma, specifically identified as Grade II. The disease is disseminated, affecting multiple groups of lymph nodes throughout the body.

Apply this code when documentation confirms follicular lymphoma, histologically graded as Grade II, with evidence of involvement in two or more non-contiguous lymph node regions or structures. This typically requires pathology reports detailing the grade and imaging or clinical notes indicating widespread lymph node involvement.

• Ensure the pathology report explicitly states "Grade II" for follicular lymphoma; do not assume the grade.
• Verify that documentation clearly indicates involvement of multiple, non-contiguous lymph node sites, not just a single region.
• Consider sequencing this code with codes for any associated symptoms or complications, if applicable, following official ICD-10-CM guidelines.