U.S. ICD-10-CM · FY 2027

C93.1 ICD-10-CM Code: Chronic myelomonocytic leukemia

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

C93.1

Chronic myelomonocytic leukemia

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where C93.1 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

  3. 3

    Category C93

    Monocytic leukemia

  4. 4

    Code C93.1

    Chronic myelomonocytic leukemia

More specific choices

Codes under C93.1

C93.1 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

  • Chronic monocytic leukemia
  • CMML-1
  • CMML-2
  • CMML with eosinophilia

Code first

No “code first” instruction is listed for C93.1.

Use additional code

No “use additional code” instruction is listed for C93.1.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for C93.1.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for C93.1.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code C93.1 mean?

C93.1 is the FY 2027 U.S. ICD-10-CM code for “Chronic myelomonocytic leukemia.”

Is C93.1 a billable or specific ICD-10-CM code?

No. C93.1 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is C93.1 located in ICD-10-CM?

C93.1 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96) (C81–C96), under category C93, Monocytic leukemia.

What coding notes are listed for C93.1?

Its listed inclusion terms are Chronic monocytic leukemia; CMML-1; CMML-2; CMML with eosinophilia. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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