ICD-10-CM diagnosis code
C82.33 Follicular lymphoma grade IIIa, intra-abdominal lymph nodes
- Billable
- Yes, a complete code (FY2026)
- Category
- C82 Follicular lymphoma
- Chapter
- 2. Neoplasms
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Other codes in C82
99 complete codes in this category.
- C82.28Follicular lymphoma grade III, unspecified, lymph nodes of multiple sites
- C82.29Follicular lymphoma grade III, unspecified, extranodal and solid organ sites
- C82.2AFollicular lymphoma grade III, unspecified, in remission
- C82.30Follicular lymphoma grade IIIa, unspecified site
- C82.31Follicular lymphoma grade IIIa, lymph nodes of head, face, and neck
- C82.32Follicular lymphoma grade IIIa, intrathoracic lymph nodes
- C82.33Follicular lymphoma grade IIIa, intra-abdominal lymph nodes
- C82.34Follicular lymphoma grade IIIa, lymph nodes of axilla and upper limb
- C82.35Follicular lymphoma grade IIIa, lymph nodes of inguinal region and lower limb
- C82.36Follicular lymphoma grade IIIa, intrapelvic lymph nodes
- C82.37Follicular lymphoma grade IIIa, spleen
- C82.38Follicular lymphoma grade IIIa, lymph nodes of multiple sites
Documentation tips
- Make sure the note supports every element of the title, “Follicular lymphoma grade IIIa, intra-abdominal lymph nodes”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to C82.
The international WHO ICD-10 also has C82, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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