C95.90 is the authoritative medical code for Leukemia, unspecified not having achieved remission. This classification is used in medical billing and clinical recording to specify the clinical criteria for leukemia, unspecified not having achieved remission (ICD-10-CM C95.90), 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
Leukemia, unspecified not having achieved remission is a billable ICD-10-CM diagnosis code C95.90. Inclusion terms: Leukemia, unspecified with failed remission; Leukemia NOS. Excludes1 (not coded here): personal history of leukemia Z85.6. 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 C95.90 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Leukemia, unspecified with failed remission
- Leukemia NOS
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- personal history of leukemia Z85.6
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 C95.90?
Per Excludes1 instructions, C95.90 must not be reported with: personal history of leukemia (Z85.6).
Can C95.90 be reported alongside related conditions?
Per Excludes2 instructions, C95.90 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 C95.90?
Leukemia, unspecified not having achieved remission includes: Leukemia, unspecified with failed remission; Leukemia NOS.
Codes in This Family (12)
Official ICD-10-CM classifications in the same code family as C95.90, with their registry titles.
- C95 — Leukemia of unspecified cell type
- C95.0 — Acute leukemia of unspecified cell type
- C95.00 — Acute leukemia of unspecified cell type not having achieved remission
- C95.01 — Acute leukemia of unspecified cell type, in remission
- C95.02 — Acute leukemia of unspecified cell type, in relapse
- C95.1 — Chronic leukemia of unspecified cell type
- C95.10 — Chronic leukemia of unspecified cell type not having achieved remission
- C95.11 — Chronic leukemia of unspecified cell type, in remission
- C95.12 — Chronic leukemia of unspecified cell type, in relapse
- C95.9 — Leukemia, unspecified
- C95.91 — Leukemia, unspecified, in remission
- C95.92 — Leukemia, unspecified, in relapse
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:
ICD Code C91.90
Lymphoid leukemia, unspecified not having achieved remission
ICD Code C92.90
Myeloid leukemia, unspecified, not having achieved remission
ICD Code C93.90
Monocytic leukemia, unspecified, not having achieved remission