C93.1 — Chronic myelomonocytic leukemia
C93.1 is a non-billable header ICD-10-CM code for chronic myelomonocytic leukemia. It cannot be billed on its own: choose one of the more specific child codes below.
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
- , if applicable, eosinophilia (D72.18)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Chronic monocytic leukemia
- CMML-1
- CMML-2
- CMML with eosinophilia
Other codes that can never be billed with C93.1
These codes carry an Excludes1 note pointing at C93.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C93.1 alone.
Risk adjustment
C93.1 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 C93.1
3 child codes. Green means billable.
Related codes at this level
Codes that share C93. If C93.1 is not quite right, the correct code is usually one of these.
Questions about C93.1
- Is C93.1 a billable ICD-10-CM code?
- No. C93.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does C93.1 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).