C84.05 – Mycosis fungoides, lymph nodes of inguinal region and lower limb
ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue
ICD-10-CM code
C84.05
- Code
C84.05(claims format:C8405)- Description
- Mycosis fungoides, lymph nodes of inguinal region and lower limb
- Short description
- Mycosis fungoides, nodes of inguinal region and lower limb
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 2. Neoplasms (C00-D49)
- Block
- C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
- Parent codes
- C84 › C84.0
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
C84 – Mature T/NK-cell lymphomas
Excludes1 (not coded here):
- personal history of non-Hodgkin lymphoma (Z85.72)
C84.0 – Mycosis fungoides
Excludes1 (not coded here):
- peripheral T-cell lymphoma, not elsewhere classified (C84.4-)
Block C81-C96
Related codes in C84.0
- C84.00 – Mycosis fungoides, unspecified siteBillable
- C84.01 – Mycosis fungoides, lymph nodes of head, face, and neckBillable
- C84.02 – Mycosis fungoides, intrathoracic lymph nodesBillable
- C84.03 – Mycosis fungoides, intra-abdominal lymph nodesBillable
- C84.04 – Mycosis fungoides, lymph nodes of axilla and upper limbBillable
- C84.06 – Mycosis fungoides, intrapelvic lymph nodesBillable
- C84.07 – Mycosis fungoides, spleenBillable
- C84.08 – Mycosis fungoides, lymph nodes of multiple sitesBillable
- C84.09 – Mycosis fungoides, extranodal and solid organ sitesBillable
- C84.0A – Mycosis fungoides, in remissionBillable
Frequently asked questions
What is ICD-10 code C84.05?
C84.05 is the ICD-10-CM code for mycosis fungoides, lymph nodes of inguinal region and lower limb, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).
Is C84.05 a billable code?
Yes. C84.05 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does C84.05 belong to?
It belongs to category C84 – Mature T/NK-cell lymphomas.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.