C84.9 Mature T/NK-cell lymphomas, unspecified

Non-billable header with 11 child codes.

Applicable to

• NK/T cell lymphoma NOS

Excludes1 (never code together)

• mature T-cell lymphoma, not elsewhere classified (C84.4-)

Applies from C84 Mature T/NK-cell lymphomas

Excludes1 (never code together)

• personal history of non-Hodgkin lymphoma (Z85.72)

Codes under C84.9

• C84.90 Mature T/NK-cell lymphomas, unspecified, unspecified site
• C84.91 Mature T/NK-cell lymphomas, unspecified, lymph nodes of head, face, and neck
• C84.92 Mature T/NK-cell lymphomas, unspecified, intrathoracic lymph nodes
• C84.93 Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodes
• C84.94 Mature T/NK-cell lymphomas, unspecified, lymph nodes of axilla and upper limb
• C84.95 Mature T/NK-cell lymphomas, unspecified, lymph nodes of inguinal region and lower limb
• C84.96 Mature T/NK-cell lymphomas, unspecified, intrapelvic lymph nodes
• C84.97 Mature T/NK-cell lymphomas, unspecified, spleen
• C84.98 Mature T/NK-cell lymphomas, unspecified, lymph nodes of multiple sites
• C84.99 Mature T/NK-cell lymphomas, unspecified, extranodal and solid organ sites
• C84.9A Mature T/NK-cell lymphomas, unspecified, in remission

Code annotations containing back-references to C84.9

Back-references to C84

• 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.-)")
• Type 1 Excludes: C82 Follicular lymphoma ("mature T/NK-cell lymphomas (C84.-)")
• Type 1 Excludes: C83.0 Small cell B-cell lymphoma ("mature T/NK-cell lymphomas (C84.-)")
• Type 1 Excludes: C83.3 Diffuse large B-cell lymphoma ("mature T/NK-cell lymphomas (C84.-)")
• Type 1 Excludes: C86 Other specified types of T/NK-cell lymphoma ("mature T/NK-cell lymphomas (C84.-)")
• 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)")

Diagnosis Index entries for C84.9

• Lymphoma (of) (malignant) › mature T/NK-cell
• Lymphoma (of) (malignant) › NK/T cell

Nearby codes

• C84.Z6 Other mature T/NK-cell lymphomas, intrapelvic lymph nodes
• C84.Z7 Other mature T/NK-cell lymphomas, spleen
• C84.Z8 Other mature T/NK-cell lymphomas, lymph nodes of multiple sites
• C84.Z9 Other mature T/NK-cell lymphomas, extranodal and solid organ sites
• C84.ZA Other mature T/NK-cell lymphomas, in remission
• C84.9 Mature T/NK-cell lymphomas, unspecified (this code)
• C84.90 Mature T/NK-cell lymphomas, unspecified, unspecified site
• C84.91 Mature T/NK-cell lymphomas, unspecified, lymph nodes of head, face, and neck
• C84.92 Mature T/NK-cell lymphomas, unspecified, intrathoracic lymph nodes
• C84.93 Mature T/NK-cell lymphomas, unspecified, intra-abdominal lymph nodes
• C84.94 Mature T/NK-cell lymphomas, unspecified, lymph nodes of axilla and upper limb