C96.4 — Sarcoma of dendritic cells (accessory cells)

BillableCC

Is C96.4 billable?

Yes — C96.4 is billable for FY2027. C96.4 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. C96.4 may be submitted for encounters from October 1, 2026 through September 30, 2027.

C96.4 at a glance

Code	C96.4
Description	Sarcoma of dendritic cells (accessory cells)
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does C96.4 group to?

C96.4 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, C96.4 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is C96.4 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to C96.4. They show the wording a clinician may have documented, which often differs from the Tabular description.

Sarcoma › dendritic cells (of)
Sarcoma › follicular dendritic cell (of)
Sarcoma › interdigitating dendritic cell (of)
Sarcoma › Langerhans cell (of)

Inclusion terms

Alternative wording in documentation that is classified to C96.4.

Follicular dendritic cell sarcoma
Interdigitating dendritic cell sarcoma
Langerhans cell sarcoma

Excludes1 — never code together — inherited from C96

The conditions below can never be reported together with C96.4 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 other malignant neoplasms of lymphoid, hematopoietic and related tissues (Z85.79)

Excludes2 — not included here — inherited from C81-C96

The conditions below are not part of C96.4, but a patient may have both at the same time. When documentation supports it, C96.4 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 C96.4 existed?

C96.4 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.