ICD-10 Code for Leukemia

The default ICD-10-CM 2027 code for leukemia, leukemic is C95.9 – Leukemia, unspecified (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (32 codes, 1 billable).

Main code: C95.9 – Leukemia, unspecified
Billable: No – header code

Index entries for Leukemia

acute basophilic – C94.8- (header)
acute bilineal – C95.0- (header)
acute erythroid – C94.0- (header)
acute lymphoblastic – C91.0- (header)
acute megakaryoblastic – C94.2- (header)
acute megakaryocytic – C94.2- (header)
acute mixed lineage – C95.0- (header)
acute monoblastic (monoblastic/monocytic) – C93.0- (header)
acute monocytic (monoblastic/monocytic) – C93.0- (header)
acute myeloblastic (minimal differentiation) (with maturation) – C92.0- (header)
acute myeloid, NOS – C92.0- (header)
- with
  - 11q23-abnormality – C92.6- (header)
  - dysplasia of remaining hematopoesis and/or myelodysplastic disease in its history – C92.A- (header)
  - multilineage dysplasia – C92.A- (header)
  - variation of MLL-gene – C92.6- (header)
- M6 (a)(b) – C94.0- (header)
- M7 – C94.2- (header)
acute myelomonocytic – C92.5- (header)
acute promyelocytic – C92.4- (header)
adult T-cell (HTLV-1-associated) (acute variant) (chronic variant) (lymphomatoid variant) (smouldering variant) – C91.5- (header)
aggressive NK-cell – C94.8- (header)
AML (1/ETO) (M0) (M1) (M2) (without a FAB classification) – C92.0- (header)
AML M3 – C92.4- (header)
AML M4 (Eo with inv(16) or t(16;16)) – C92.5- (header)
AML M5 – C93.0- (header)
AML M5a – C93.0- (header)
AML M5b – C93.0- (header)
AML Me with t (15;17) – C92.4- (header)
atypical chronic myeloid, BCR/ABL-negative – C92.2- (header)
biphenotypic acute – C95.0- (header)
blast cell – C95.0- (header)
Burkitt-type, mature B-cell – C91.A- (header)
chronic eosinophilic – C94.8- (header) – see also Syndrome, hypereosinophilic, myeloid
chronic lymphocytic, of B-cell type – C91.1- (header)
chronic monocytic – C93.1- (header)
chronic myelogenous (Philadelphia chromosome (Ph1) positive) (t(9;22)) (q34;q11) (with crisis of blast cells) – C92.1- (header)
chronic myeloid, BCR/ABL-positive – C92.1- (header)
- atypical, BCR/ABL-negative – C92.2- (header)
chronic myelomonocytic – C93.1- (header)
chronic neutrophilic – D47.1
CMML (-1) (-2) (with eosinophilia) – C93.1- (header)
granulocytic – C92.9- (header) – see also Category C92
hairy cell – C91.4- (header)
juvenile myelomonocytic – C93.3- (header)
lymphoid – C91.9- (header)
- specified NEC – C91.Z- (header)
mast cell – C94.3- (header)
mature B-cell, Burkitt-type – C91.A- (header)
monocytic (subacute) – C93.9- (header)
- specified NEC – C93.Z- (header)
myelogenous – C92.9- (header) – see also Category C92
myeloid – C92.9- (header)
- acute – C92.0- (header)
- specified NEC – C92.Z- (header)
plasma cell – C90.1- (header)
plasmacytic – C90.1- (header)
prolymphocytic
- of B-cell type – C91.3- (header)
- of T-cell type – C91.6- (header)
specified NEC – C94.8- (header)
stem cell, of unclear lineage – C95.0- (header)
subacute lymphocytic – C91.9- (header)
T-cell large granular lymphocytic – C91.Z- (header)
unspecified cell type – C95.9- (header)
- acute – C95.0- (header)
- chronic – C95.1- (header)

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.