C96.20Billable
Malignant mast cell neoplasm, unspecified
- Chapter
- 2. Neoplasms
- Category
- C96
- Effective date
- October 1, 2026
Related codes in category C96
C96Oth & unsp malig neoplm of lymphoid, hematpoetc and rel tissC96.0Multifocal and multisystemic Langerhans-cell histiocytosisYesC96.2Malignant mast cell neoplasmC96.21Aggressive systemic mastocytosisYesC96.22Mast cell sarcomaYesC96.29Other malignant mast cell neoplasmYesC96.4Sarcoma of dendritic cells (accessory cells)YesC96.5Multifocal and unisystemic Langerhans-cell histiocytosisYesC96.6Unifocal Langerhans-cell histiocytosisYesC96.9Malig neoplm of lymphoid, hematpoetc and rel tissue, unspYesC96.AHistiocytic sarcomaYesC96.ZOth malig neoplm of lymphoid, hematpoetc and related tissueYes
Frequently asked questions
What is ICD-10 code C96.20?
C96.20 is an ICD-10-CM diagnosis code for Malignant mast cell neoplasm, unspecified.
Is C96.20 a billable code?
Yes. C96.20 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is C96.20 in?
C96.20 falls under Chapter 2: Neoplasms.
When did C96.20 become effective?
C96.20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to C96.20?
C96.20 belongs to category C96, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.