C93 — Monocytic leukemia

Not billable

Is C93 billable?

No — C93 is a non-billable header code. C93 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 15 billable codes beneath C93.

Billable codes under this header

C93 at a glance

Code	C93
Description	Monocytic leukemia
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with C93 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 leukemia (Z85.6)

Includes

Conditions classified to C93.

monocytoid leukemia

Excludes2 — not included here — inherited from C81-C96

The conditions below are not part of C93, but a patient may have both at the same time. When documentation supports it, C93 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)

What codes fall under C93? (5)

How long has C93 existed?

C93 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.

Which codes are confused with C93?

ICD-10-CM declares these codes mutually exclusive with C93 — exactly one of each pair can be correct for a given encounter.