C84.1 — Sezary disease
Is C84.1 billable?
No — C84.1 is a non-billable header code. C84.1 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 11 billable codes beneath C84.1.
Billable codes under this header
- C84.10Sezary disease, unspecified site
- C84.11Sezary disease, lymph nodes of head, face, and neck
- C84.12Sezary disease, intrathoracic lymph nodes
- C84.13Sezary disease, intra-abdominal lymph nodes
- C84.14Sezary disease, lymph nodes of axilla and upper limb
- C84.15Sezary disease, lymph nodes of inguinal region and lower limb
- C84.16Sezary disease, intrapelvic lymph nodes
- C84.17Sezary disease, spleen
- C84.18Sezary disease, lymph nodes of multiple sites
- C84.19Sezary disease, extranodal and solid organ sites
- C84.1ASezary disease, in remission
C84.1 at a glance
| Code | C84.1 |
|---|---|
| Description | Sezary disease |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is C84.1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to C84.1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Sézary disease
- Disease, diseased › Sézary
Excludes1 — never code together — inherited from C84
The conditions below can never be reported together with C84.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- personal history of non-Hodgkin lymphoma (Z85.72)
Excludes2 — not included here — inherited from C81-C96
The conditions below are not part of C84.1, but a patient may have both at the same time. When documentation supports it, C84.1 and the excluded code may both be reported.
What codes fall under C84.1? (11)
- C84.10Sezary disease, unspecified site
- C84.11Sezary disease, lymph nodes of head, face, and neck
- C84.12Sezary disease, intrathoracic lymph nodes
- C84.13Sezary disease, intra-abdominal lymph nodes
- C84.14Sezary disease, lymph nodes of axilla and upper limb
- C84.15Sezary disease, lymph nodes of inguinal region and lower limb
- C84.16Sezary disease, intrapelvic lymph nodes
- C84.17Sezary disease, spleen
- C84.18Sezary disease, lymph nodes of multiple sites
- C84.19Sezary disease, extranodal and solid organ sites
- C84.1ASezary disease, in remission
How long has C84.1 existed?
C84.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the C84 family? (7)
- C84.0Mycosis fungoidesnot billable
- C84.4Peripheral T-cell lymphoma, not elsewhere classifiednot billable
- C84.6Anaplastic large cell lymphoma, ALK-positivenot billable
- C84.7Anaplastic large cell lymphoma, ALK-negativenot billable
- C84.ACutaneous T-cell lymphoma, unspecifiednot billable
- C84.ZOther mature T/NK-cell lymphomasnot billable
- C84.9Mature T/NK-cell lymphomas, unspecifiednot billable