ICD-10-CM 2027 diagnosis code
C94Other leukemias of specified cell type
C94 is a header code, so it can't be reported by itself. Choose one of the 6 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About C94
C94 is the ICD-10-CM diagnosis code for other leukemias of specified cell type. It belongs to block C81-C96 (malignant neoplasms of lymphoid, hematopoietic and related tissue) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: C94.0 (leukemia), C94.2 (leukemia), C94.3 (leukemia), C94.4 (myelofibrosis), C94.6 (classified) and C94.8 (leukemias).
Don't report C94 together with the conditions in its Excludes1 note: leukemic reticuloendotheliosis (C91.4-), myelodysplastic syndromes (D46.-), personal history of leukemia (Z85.6) and plasma cell leukemia (C90.1-).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under C94
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to C94.
Broader instructions also apply from C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue and Chapter 2: Neoplasms.
Codes whose notes reference C94
- D72.825Excludes1
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about C94
Is C94 billable?
- No. C94 is a header code. Report one of its more specific subcodes instead.