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ICD-10-CM 2027

ICD-10 code for neoplasm mast cell

Choose a code from the options below based on the documentation.

From the official ICD-10-CM alphabetic index entry “Mast cell › neoplasm”. Page updated September 29, 2026.

About coding neoplasm mast cell

The official ICD-10-CM index doesn't give a single default code for neoplasm mast cell; the code depends on the details below.

More specific neoplasm mast cell codes (official index)

  • malignant C96.20 — Malignant mast cell neoplasm, unspecified
  • specified type NEC C96.29 — Other malignant mast cell neoplasm
  • of uncertain behavior NEC D47.09 — Other mast cell neoplasms of uncertain behavior

Common questions about neoplasm mast cell ICD-10 codes

What is the ICD-10 code for malignant neoplasm mast cell?

C96.20 — Malignant mast cell neoplasm, unspecified.