C84.11 — Sezary disease, lymph nodes of head, face, and neck
Is C84.11 billable?
Yes — C84.11 is billable for FY2027. C84.11 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C84.11 may be submitted for encounters from October 1, 2026 through September 30, 2027.
C84.11 at a glance
| Code | C84.11 |
|---|---|
| Description | Sezary disease, lymph nodes of head, face, and neck |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C84.11 group to?
C84.11 sits in MDC Pre and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 011Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with MCCsurgical
- 012Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy with CCsurgical
- 013Tracheostomy for Face, Mouth and Neck Diagnoses or Laryngectomy without CC/MCCsurgical
As a secondary diagnosis, C84.11 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is C84.11 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under C84.1, the nearest indexed parent of C84.11. Use them to find the family, then select the specific code.
- Sézary disease
- Disease, diseased › Sézary
Excludes1 — never code together — inherited from C84
The conditions below can never be reported together with C84.11 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 C84.11, but a patient may have both at the same time. When documentation supports it, C84.11 and the excluded code may both be reported.
How long has C84.11 existed?
C84.11 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 C84.1 family? (10)
- C84.10Sezary disease, unspecified site
- 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