C94.6 — Myelodysplastic disease, not elsewhere classified
C94.6 is a billable, specific ICD-10-CM code for myelodysplastic disease, not elsewhere classified. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Myelodysplastic/myeloproliferative neoplasm, unclassifiable
- Myeloproliferative disease, not elsewhere classified
Excludes1 inherited from the categories above C94.6
These are not written on C94.6, but they bind it: a note on a category applies to every code beneath it. Billing C94.6 with anything listed here is a denial.
Other codes that can never be billed with C94.6
These codes carry an Excludes1 note pointing at C94.6. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading C94.6 alone.
- D72.825Bandemia
Risk adjustment
C94.6 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 19 Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers1.798 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
C94.6 is named in 79 Medicare coverage policies — 79 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52480Oral Antiemetic Drugs (Replacement for Intravenous Antiemetics) - Policy Article
- A54768Billing and Coding: Cardiac Blood Pool Imaging (Multiple Gated Acquisition Scanning- MUGA, Ventriculography) When Performed in Conjunction with Cardiotoxic Chemotherapy
- A55717Billing and Coding: Lab: Flow Cytometry
- A56199Billing and Coding: Molecular Pathology Procedures
How C94.6 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to C94.6.
- Disease, diseased›myelodysplastic
- Disease, diseased›myelodysplastic/myeloproliferative neoplasm, unclassifiable
- Neoplasm, neoplastic›myelodysplastic/myeloproliferative, unclassifiable
- Disease, diseased›myeloproliferative›not classified
- Disease, diseased›myeloproliferative›specified NEC
- Disease, diseased›myeloproliferative›unclassifiable
Code history
C94.6 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share C94. If C94.6 is not quite right, the correct code is usually one of these.
Questions about C94.6
- Is C94.6 a billable ICD-10-CM code?
- Yes. C94.6 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does C94.6 sit in the tabular list?
- Neoplasms (C00-D49), in the block Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96).
- What cannot be coded together with C94.6?
- C94.6 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above C94.6 (C94) and apply to it just the same.