Is C93 a billable ICD-10-CM code?

No. C93 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does C93 sit in the tabular list?

Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).

What cannot be coded together with C93?

C93 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

C93

C93 — Monocytic leukemia

Non-billable headerICD-10-CM

C93 is a non-billable header ICD-10-CM code for monocytic leukemia. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

personal history of leukemia (Z85.6)

Includes

Conditions this code covers.

monocytoid leukemia

Other codes that can never be billed with C93

These codes carry an Excludes1 note pointing at C93. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C93 alone.

D72.825Bandemia
C92.1Chronic myeloid leukemia, BCR/ABL-positive
D46.ZOther myelodysplastic syndromes

Risk adjustment

C93 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead C93

5 child codes. Green means billable.

Questions about C93

Is C93 a billable ICD-10-CM code?: No. C93 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does C93 sit in the tabular list?: Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).
What cannot be coded together with C93?: C93 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.