Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

All Codes Billable Only

Internal Codes

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C7B.1|
Secondary Merkel cell carcinoma
C7B.8|
Other secondary neuroendocrine tumors
C80|
Malignant neoplasm without specification of site
C80.0|
Disseminated malignant neoplasm, unspecified
C80.1|
Malignant (primary) neoplasm, unspecified
C80.2|
Malignant neoplasm associated with transplanted organ
C81|
Hodgkin lymphoma
C81.0|
Nodular lymphocyte predominant Hodgkin lymphoma
C81.00|
Nodular lymphocyte predominant Hodgkin lymphoma, unspecified site
C81.01|
Nodular lymphocyte predominant Hodgkin lymphoma, lymph nodes of head, face, and neck
C81.02|
Nodular lymphocyte predominant Hodgkin lymphoma, intrathoracic lymph nodes
C81.03|
Nodular lymphocyte predominant Hodgkin lymphoma, intra-abdominal lymph nodes
C81.04|
Nodular lymphocyte predominant Hodgkin lymphoma, lymph nodes of axilla and upper limb
C81.05|
Nodular lymphocyte predominant Hodgkin lymphoma, lymph nodes of inguinal region and lower limb
C81.06|
Nodular lymphocyte predominant Hodgkin lymphoma, intrapelvic lymph nodes
C81.07|
Nodular lymphocyte predominant Hodgkin lymphoma, spleen
C81.08|
Nodular lymphocyte predominant Hodgkin lymphoma, lymph nodes of multiple sites
C81.09|
Nodular lymphocyte predominant Hodgkin lymphoma, extranodal and solid organ sites
C81.0A|
Nodular lymphocyte predominant Hodgkin lymphoma, in remission
C81.1|
Nodular sclerosis Hodgkin lymphoma
C81.10|
Nodular sclerosis Hodgkin lymphoma, unspecified site
C81.11|
Nodular sclerosis Hodgkin lymphoma, lymph nodes of head, face, and neck
C81.12|
Nodular sclerosis Hodgkin lymphoma, intrathoracic lymph nodes
C81.13|
Nodular sclerosis Hodgkin lymphoma, intra-abdominal lymph nodes
C81.14|
Nodular sclerosis Hodgkin lymphoma, lymph nodes of axilla and upper limb
C81.15|
Nodular sclerosis Hodgkin lymphoma, lymph nodes of inguinal region and lower limb
C81.16|
Nodular sclerosis Hodgkin lymphoma, intrapelvic lymph nodes
C81.17|
Nodular sclerosis Hodgkin lymphoma, spleen
C81.18|
Nodular sclerosis Hodgkin lymphoma, lymph nodes of multiple sites
C81.19|
Nodular sclerosis Hodgkin lymphoma, extranodal and solid organ sites
C81.1A|
Nodular sclerosis Hodgkin lymphoma, in remission
C81.2|
Mixed cellularity Hodgkin lymphoma
C81.20|
Mixed cellularity Hodgkin lymphoma, unspecified site
C81.21|
Mixed cellularity Hodgkin lymphoma, lymph nodes of head, face, and neck
C81.22|
Mixed cellularity Hodgkin lymphoma, intrathoracic lymph nodes
C81.23|
Mixed cellularity Hodgkin lymphoma, intra-abdominal lymph nodes
C81.24|
Mixed cellularity Hodgkin lymphoma, lymph nodes of axilla and upper limb
C81.25|
Mixed cellularity Hodgkin lymphoma, lymph nodes of inguinal region and lower limb
C81.26|
Mixed cellularity Hodgkin lymphoma, intrapelvic lymph nodes
C81.27|
Mixed cellularity Hodgkin lymphoma, spleen
C81.28|
Mixed cellularity Hodgkin lymphoma, lymph nodes of multiple sites
C81.29|
Mixed cellularity Hodgkin lymphoma, extranodal and solid organ sites
C81.2A|
Mixed cellularity Hodgkin lymphoma, in remission
C81.3|
Lymphocyte depleted Hodgkin lymphoma
C81.30|
Lymphocyte depleted Hodgkin lymphoma, unspecified site
C81.31|
Lymphocyte depleted Hodgkin lymphoma, lymph nodes of head, face, and neck
C81.32|
Lymphocyte depleted Hodgkin lymphoma, intrathoracic lymph nodes
C81.33|
Lymphocyte depleted Hodgkin lymphoma, intra-abdominal lymph nodes
C81.34|
Lymphocyte depleted Hodgkin lymphoma, lymph nodes of axilla and upper limb
C81.35|
Lymphocyte depleted Hodgkin lymphoma, lymph nodes of inguinal region and lower limb

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