C94.6 is the authoritative medical code for Myelodysplastic disease, not elsewhere classified. This classification is used in medical billing and clinical recording to specify the clinical criteria for myelodysplastic disease, not elsewhere classified (ICD-10-CM C94.6), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Myelodysplastic disease, not elsewhere classified is a billable ICD-10-CM diagnosis code C94.6. Inclusion terms: Myelodysplastic/myeloproliferative neoplasm, unclassifiable; Myeloproliferative disease, not elsewhere classified. Excludes1 (not coded here): leukemic reticuloendotheliosis C91.4-; myelodysplastic syndromes D46.-; personal history of leukemia Z85.6; plasma cell leukemia C90.1-. Excludes2 (not included here): Kaposi's sarcoma of lymph nodes C46.3; secondary and unspecified neoplasm of lymph nodes C77.-; secondary neoplasm of bone marrow C79.52; secondary neoplasm of spleen C78.89.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C94.6 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Myelodysplastic/myeloproliferative neoplasm, unclassifiable
- Myeloproliferative disease, not elsewhere classified
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- leukemic reticuloendotheliosis C91.4-
- myelodysplastic syndromes D46.-
- personal history of leukemia Z85.6
- plasma cell leukemia C90.1-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- Kaposi's sarcoma of lymph nodes C46.3
- secondary and unspecified neoplasm of lymph nodes C77.-
- secondary neoplasm of bone marrow C79.52
- secondary neoplasm of spleen C78.89
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with C94.6?
Per Excludes1 instructions, C94.6 must not be reported with: leukemic reticuloendotheliosis (C91.4-); myelodysplastic syndromes (D46.-); personal history of leukemia (Z85.6); plasma cell leukemia (C90.1-).
Can C94.6 be reported alongside related conditions?
Per Excludes2 instructions, C94.6 and the following may both be reported when both are present: Kaposi's sarcoma of lymph nodes (C46.3); secondary and unspecified neoplasm of lymph nodes (C77.-); secondary neoplasm of bone marrow (C79.52); secondary neoplasm of spleen (C78.89).
What conditions are included under C94.6?
Myelodysplastic disease, not elsewhere classified includes: Myelodysplastic/myeloproliferative neoplasm, unclassifiable; Myeloproliferative disease, not elsewhere classified.
Codes in This Family (21)
Official ICD-10-CM classifications in the same code family as C94.6, with their registry titles.
- C94 — Other leukemias of specified cell type
- C94.0 — Acute erythroid leukemia
- C94.00 — Acute erythroid leukemia, not having achieved remission
- C94.01 — Acute erythroid leukemia, in remission
- C94.02 — Acute erythroid leukemia, in relapse
- C94.2 — Acute megakaryoblastic leukemia
- C94.20 — Acute megakaryoblastic leukemia not having achieved remission
- C94.21 — Acute megakaryoblastic leukemia, in remission
- C94.22 — Acute megakaryoblastic leukemia, in relapse
- C94.3 — Mast cell leukemia
- C94.30 — Mast cell leukemia not having achieved remission
- C94.31 — Mast cell leukemia, in remission
- C94.32 — Mast cell leukemia, in relapse
- C94.4 — Acute panmyelosis with myelofibrosis
- C94.40 — Acute panmyelosis with myelofibrosis not having achieved remission
- C94.41 — Acute panmyelosis with myelofibrosis, in remission
- C94.42 — Acute panmyelosis with myelofibrosis, in relapse
- C94.8 — Other specified leukemias
- C94.80 — Other specified leukemias not having achieved remission
- C94.81 — Other specified leukemias, in remission
- C94.82 — Other specified leukemias, in relapse
Indexed Clinical Terms (6)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Disease, diseased, myelodysplastic
- Disease, diseased, myelodysplastic/myeloproliferative neoplasm, unclassifiable
- Disease, diseased, myeloproliferative, not classified
- Disease, diseased, myeloproliferative, specified NEC
- Disease, diseased, myeloproliferative, unclassifiable
- Neoplasm, neoplastic, myelodysplastic/myeloproliferative, unclassifiable
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: