Is C84.A a billable code?
No. C84.A is a header code that groups 11 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
C84.A: Cutaneous T-cell lymphoma, unspecified
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
C84.A groups related diagnoses under cutaneous t-cell lymphoma, unspecified. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under C84.A
- C84.A0Cutaneous T-cell lymphoma, unspecified, unspecified site
- C84.A1Cutaneous T-cell lymphoma, unspecified lymph nodes of head, face, and neck
- C84.A2Cutaneous T-cell lymphoma, unspecified, intrathoracic lymph nodes
- C84.A3Cutaneous T-cell lymphoma, unspecified, intra-abdominal lymph nodes
- C84.A4Cutaneous T-cell lymphoma, unspecified, lymph nodes of axilla and upper limb
- C84.A5Cutaneous T-cell lymphoma, unspecified, lymph nodes of inguinal region and lower limb
- C84.A6Cutaneous T-cell lymphoma, unspecified, intrapelvic lymph nodes
- C84.A7Cutaneous T-cell lymphoma, unspecified, spleen
- C84.A8Cutaneous T-cell lymphoma, unspecified, lymph nodes of multiple sites
- C84.A9Cutaneous T-cell lymphoma, unspecified, extranodal and solid organ sites
- C84.AACutaneous T-cell lymphoma, unspecified, in remission
Other codes in C84 Mature T/NK-cell lymphomas
- C84.0Mycosis fungoidesheader
- C84.1Sezary diseaseheader
- C84.4Peripheral T-cell lymphoma, not elsewhere classifiedheader
- C84.6Anaplastic large cell lymphoma, ALK-positiveheader
- C84.7Anaplastic large cell lymphoma, ALK-negativeheader
- C84.9Mature T/NK-cell lymphomas, unspecifiedheader
- C84.ZOther mature T/NK-cell lymphomasheader
C84.A questions
What does C84.A mean?
C84.A is the ICD-10-CM code for Cutaneous T-cell lymphoma, unspecified. It is in chapter 2, Neoplasms (C00-D49).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.