ICD-10-CM Code C84.0
Mycosis fungoides
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.ICD Code C84.0 is a non-billable code. To code a diagnosis of this type, you must use one of the ten child codes of C84.0 that describes the diagnosis 'mycosis fungoides' in more detail.
- C84.0 Mycosis fungoides NON-BILLABLE
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- BILLABLE C84.00 Mycosis fungoides, unspecified site
- BILLABLE C84.01 Mycosis fungoides, lymph nodes of head, face, and neck
- BILLABLE C84.02 Mycosis fungoides, intrathoracic lymph nodes
- BILLABLE C84.03 Mycosis fungoides, intra-abdominal lymph nodes
- BILLABLE C84.04 Mycosis fungoides, lymph nodes of axilla and upper limb
- BILLABLE C84.05 Mycosis fungoides, lymph nodes of inguinal region and lower limb
- BILLABLE C84.06 Mycosis fungoides, intrapelvic lymph nodes
- BILLABLE C84.07 Mycosis fungoides, spleen
- BILLABLE C84.08 Mycosis fungoides, lymph nodes of multiple sites
- BILLABLE C84.09 Mycosis fungoides, extranodal and solid organ sites
The ICD code C840 is used to code Cutaneous T cell lymphoma
Cutaneous T cell lymphoma (CTCL) is a class of non-Hodgkin lymphoma, which is a type of cancer of the immune system. Unlike most non-Hodgkin lymphomas (which are generally B cell related), CTCL is caused by a mutation of T cells. The malignant T cells in the body initially migrate to the skin, causing various lesions to appear. These lesions change shape as the disease progresses, typically beginning as what appears to be a rash which can be very itchy and eventually forming plaques and tumors before metastasizing to other parts of the body.
| Specialty: | Hematology And Oncology |
| MeSH Codes: | D016410, D016410 |
| ICD 9 Codes: | 202.1, 202.2 |
Micrograph showing cutaneous T-cell lymphoma. H&E stain.
Coding Notes for C84.0 Info for medical coders on how to properly use this ICD-10 code
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Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here." - Peripheral T-cell lymphoma, not classified - instead, use code C84.4-
Related Concepts SNOMET-CT
- Mycosis fungoides of extranodal AND/OR solid organ site (disorder)
Coding Advice SNOMET-CT
- Possible requirement for morphology code
ICD-10-CM Alphabetical Index References for 'C84.0 - Mycosis fungoides'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code C84.0. Click on any term below to browse the alphabetical index.
Parent Code: C84 - Mature T/NK-cell lymphomas