C94.32 – Mast cell leukemia, in relapse

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of lymphoid, hematopoietic and related tissue

Billable code

ICD-10-CM code C94.32
Code
C94.32 (claims format: C9432)
Description
Mast cell leukemia, in relapse
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
2. Neoplasms (C00-D49)
Block
C81-C96 Malignant neoplasms of lymphoid, hematopoietic and related tissue
Parent codes
C94 › C94.3

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

C94 – Other leukemias of specified cell type

Excludes1 (not coded here):
  • leukemic reticuloendotheliosis (C91.4-)
  • myelodysplastic syndromes (D46.-)
  • personal history of leukemia (Z85.6)
  • plasma cell leukemia (C90.1-)

Block C81-C96

Excludes2 (not included here):
  • Kaposi's sarcoma of lymph nodes (C46.3)
  • secondary and unspecified neoplasm of lymph nodes (C77.-)
  • secondary neoplasm of bone marrow (C79.52)
  • secondary neoplasm of spleen (C78.89)

Related codes in C94.3

Frequently asked questions

What is ICD-10 code C94.32?

C94.32 is the ICD-10-CM code for mast cell leukemia, in relapse, in the block C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).

Is C94.32 a billable code?

Yes. C94.32 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C94.32 belong to?

It belongs to category C94 – Other leukemias of specified cell type.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.