C93.1 — Chronic myelomonocytic leukemia
Is C93.1 billable?
No — C93.1 is a non-billable header code. C93.1 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 3 billable codes beneath C93.1.
C93.1 at a glance
| Code | C93.1 |
|---|---|
| Description | Chronic myelomonocytic leukemia |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is C93.1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to C93.1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Leukemia, leukemic › chronic monocytic
- Leukemia, leukemic › chronic myelomonocytic
- Leukemia, leukemic › CMML
- Naegeli's › leukemia, monocytic
Code also
Two codes may be needed to describe the condition fully. Whether C93.1 is sequenced first depends on the reason for the encounter.
- , if applicable, eosinophilia (D72.18)
Inclusion terms
Alternative wording in documentation that is classified to C93.1.
- Chronic monocytic leukemia
- CMML-1
- CMML-2
- CMML with eosinophilia
Excludes1 — never code together — inherited from C93
The conditions below can never be reported together with C93.1 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)
Excludes2 — not included here — inherited from C81-C96
The conditions below are not part of C93.1, but a patient may have both at the same time. When documentation supports it, C93.1 and the excluded code may both be reported.
What codes fall under C93.1? (3)
How long has C93.1 existed?
C93.1 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.