C82.33 Follicular lymphoma grade IIIa, intra-abdominal lymph nodes

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from C82 Follicular lymphoma

Includes

• follicular lymphoma with or without diffuse areas

Excludes1 (never code together)

• mature T/NK-cell lymphomas (C84.-)
• personal history of non-Hodgkin lymphoma (Z85.72)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 21 — Lymphoma and Other Cancers
• CMS-HCC V22: HCC 10 — Lymphoma and Other Cancers
• RxHCC V08: HCC 21 — Lymphomas and Other Hematologic Cancers
• ESRD V24: HCC 10

MS-DRG index

Defines the logic of DRG(s) 820-822 in MDC 17.

Approximate ICD-9-CM (GEMs)

• 202.03 Nodular lymphoma, intra-abdominal lymph nodes (approximate)

Code annotations containing back-references to C82.33

Back-references to C82

• Type 1 Excludes: C26.1 Malignant neoplasm of spleen ("non-Hodgkin lymphoma (C82-C85)")
• Type 1 Excludes: C76 Malignant neoplasm of other and ill-defined sites ("malignant neoplasm of lymphoid, hematopoietic and related tissue (C81-C96)")
• Type 1 Excludes: C77 Secondary and unspecified malignant neoplasm of lymph nodes ("malignant neoplasm of lymph nodes, specified as primary (C81-C86, C88, C96.-)")
• Code Also: D47.02 Systemic mastocytosis ("non-Hodgkin lymphoma (C82-C85)")
• Code First: Z15.0 Genetic susceptibility to malignant neoplasm (", if applicable, any current malignant neoplasm (C00-C75, C81-C96)")

Nearby codes

• C82.2A Follicular lymphoma grade III, unspecified, in remission
• C82.3 Follicular lymphoma grade IIIa
• C82.30 Follicular lymphoma grade IIIa, unspecified site
• C82.31 Follicular lymphoma grade IIIa, lymph nodes of head, face, and neck
• C82.32 Follicular lymphoma grade IIIa, intrathoracic lymph nodes
• C82.33 Follicular lymphoma grade IIIa, intra-abdominal lymph nodes (this code)
• C82.34 Follicular lymphoma grade IIIa, lymph nodes of axilla and upper limb
• C82.35 Follicular lymphoma grade IIIa, lymph nodes of inguinal region and lower limb
• C82.36 Follicular lymphoma grade IIIa, intrapelvic lymph nodes
• C82.37 Follicular lymphoma grade IIIa, spleen
• C82.38 Follicular lymphoma grade IIIa, lymph nodes of multiple sites