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ICD-10-CM Current in FY 2027

D47.09

Other mast cell neoplasms of uncertain behavior

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where D47.09 sits in the official hierarchy. Each level is the code it is classified under.

  1. D47 Other neoplasms of uncertain behavior of lymphoid, hematopoietic and related tissue
  2. D47.0 Parent Mast cell neoplasms of uncertain behavior
  3. D47.09 This code Other mast cell neoplasms of uncertain behavior

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Inclusion Terms

Extracutaneous mastocytoma

Inclusion Terms

Mast cell tumor NOS

Inclusion Terms

Mastocytoma NOS

Inclusion Terms

Mastocytosis NOS

Excludes1

congenital cutaneous mastocytosis ( Q82.2 )

Inherited from D47.0 — Mast cell neoplasms of uncertain behavior

Excludes1

histiocytic neoplasms of uncertain behavior ( D47.Z9 )

Inherited from D47.0 — Mast cell neoplasms of uncertain behavior

Excludes1

malignant mast cell neoplasm ( C96.2- )

Inherited from D47.0 — Mast cell neoplasms of uncertain behavior

Version History

How D47.09 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Other mast cell neoplasms of uncertain behavior

  2. FY 2026 Effective

    Unchanged

    Other mast cell neoplasms of uncertain behavior

Related Codes

Other codes under D47.0

Codes whose official notes reference D47.09

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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