D47.02 – Systemic mastocytosis

ICD-10-CM 2027 diagnosis code · Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes

Billable code

ICD-10-CM code D47.02
Code
D47.02 (claims format: D4702)
Description
Systemic mastocytosis
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
D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
Parent codes
D47 › D47.0

Notes for D47.02

Applicable to:
  • Indolent systemic mastocytosis
  • Isolated bone marrow mastocytosis
  • Smoldering systemic mastocytosis
  • Systemic mastocytosis, with an associated hematological non-mast cell lineage disease (SM-AHNMD)
Excludes1 (not coded here):
  • aggressive systemic mastocytosis (C96.21)
  • mast cell leukemia (C94.3-)
Code also:
  • , if applicable, any associated hematological non-mast cell lineage disease, such as:
  • acute myeloid leukemia (C92.6-, C92.A-)
  • chronic myelomonocytic leukemia (C93.1-)
  • essential thrombocytosis (D47.3)
  • hypereosinophilic syndrome (D72.1)
  • myelodysplastic syndrome (D46.9)
  • myeloproliferative syndrome (D47.1)
  • non-Hodgkin lymphoma (C82-C85)
  • plasma cell myeloma (C90.0-)
  • polycythemia vera (D45)

Notes inherited from parent codes

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

D47.0 – Mast cell neoplasms of uncertain behavior

Excludes1 (not coded here):
  • congenital cutaneous mastocytosis (Q82.2)
  • histiocytic neoplasms of uncertain behavior (D47.Z9)
  • malignant mast cell neoplasm (C96.2-)

Block D37-D48

Excludes1 (not coded here):
  • neoplasms of unspecified behavior (D49.-)
Notes:
  • Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.

Index terms for D47.02

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in D47.0

Frequently asked questions

What is ICD-10 code D47.02?

D47.02 is the ICD-10-CM code for systemic mastocytosis, in the block D37-D48 (Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes).

Is D47.02 a billable code?

Yes. D47.02 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does D47.02 belong to?

It belongs to category D47 – Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue.

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.