ICDcodes.org
FY2027

C84.ZA — Other mature T/NK-cell lymphomas, in remission

BillableCC

Is C84.ZA billable?

Yes — C84.ZA is billable for FY2027. C84.ZA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C84.ZA may be submitted for encounters from October 1, 2026 through September 30, 2027.

C84.ZA at a glance

CodeC84.ZA
DescriptionOther mature T/NK-cell lymphomas, in remission
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does C84.ZA group to?

C84.ZA sits in MDC 17 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.

  • 820Lymphoma and Leukemia with Major O.R. Procedures with MCCsurgical
  • 821Lymphoma and Leukemia with Major O.R. Procedures with CCsurgical
  • 822Lymphoma and Leukemia with Major O.R. Procedures without CC/MCCsurgical

As a secondary diagnosis, C84.ZA is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is C84.ZA listed in the Alphabetic Index?

The Alphabetic Index lists these routes under C84.Z, the nearest indexed parent of C84.ZA. Use them to find the family, then select the specific code.

  • Lymphoma › mature T/NK-cell › specified NEC (of) (malignant)

Excludes1 — never code together — inherited from C84

The conditions below can never be reported together with C84.ZA 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)

Excludes1 — never code together — inherited from C84.Z

The conditions below can never be reported together with C84.ZA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • angioimmunoblastic T-cell lymphoma (C86.50)
  • blastic NK-cell lymphoma (C86.40)
  • enteropathy-type T-cell lymphoma (C86.20)
  • extranodal NK-cell lymphoma, nasal type (C86.00)
  • hepatosplenic T-cell lymphoma (C86.10)
  • primary cutaneous CD30-positive T-cell proliferations (C86.60)
  • subcutaneous panniculitis-like T-cell lymphoma (C86.30)
  • T-cell leukemia (C91.1-)

Excludes2 — not included here — inherited from C81-C96

The conditions below are not part of C84.ZA, but a patient may have both at the same time. When documentation supports it, C84.ZA and the excluded code may both be reported.

  • Kaposi's sarcoma of lymph nodes (C46.3)
  • secondary and unspecified neoplasm of lymph nodes (C77.-)
  • secondary neoplasm of bone marrow (C79.52)
  • secondary neoplasm of spleen (C78.89)

How long has C84.ZA existed?

C84.ZA first appears in FY2025.

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.Z family? (10)