D47.02

D47.02: Systemic mastocytosis

Billable / specific codeICD-10-CM

D47.02 is a billable, specific ICD-10-CM code for systemic mastocytosis. It is valid for submission on a claim.

Check D47.02 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

aggressive systemic mastocytosis (C96.21)
mast cell leukemia (C94.3-)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

, 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)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Indolent systemic mastocytosis
Isolated bone marrow mastocytosis
Smoldering systemic mastocytosis
Systemic mastocytosis, with an associated hematological non-mast cell lineage disease (SM-AHNMD)

Excludes1 inherited from the categories above D47.02

A category’s note binds every code beneath it.

Written on D47.0: Mast cell neoplasms of uncertain behavior

congenital cutaneous mastocytosis (Q82.2)
histiocytic neoplasms of uncertain behavior (D47.Z9)
malignant mast cell neoplasm (C96.2-)

Other codes that can never be billed with D47.02

Their own Excludes1 notes name this code, so the conflict is not listed above.

C96.2Malignant mast cell neoplasm
D89.4Mast cell activation syndrome and related disorders
Q82.2Congenital cutaneous mastocytosis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

D47.02 is named in 29 Medicare coverage policies: 29 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A52370Billing and Coding: Bevacizumab and biosimilars
A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
A55717Billing and Coding: Lab: Flow Cytometry
A56199Billing and Coding: Molecular Pathology Procedures

Alphabetic index entries that lead here

Disease, diseased›systemic tissue mast cell
Mast cell›disease, systemic tissue
Mastocytosis›indolent systemic
Mastocytosis›isolated bone marrow
Mastocytosis›systemic›with an associated hematological non-mast cell lineage disease(SM-AHNMD)

Code history

Unchanged in every release from FY2024 to FY2027.