ICD-10-CM 2027
ICD-10 code for monocytic subacute leukemia
From the official ICD-10-CM alphabetic index entry “Leukemia, leukemic › monocytic (subacute)”. Page updated September 29, 2026.
About coding monocytic subacute leukemia
The ICD-10-CM code for monocytic subacute leukemia is C93.9 (Monocytic leukemia, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on C93.9.
Within C93, choose C93.9 (unspecified) only when documentation doesn't support a more specific option: acute monoblastic/monocytic leukemia (C93.0), chronic myelomonocytic leukemia (C93.1), juvenile myelomonocytic leukemia (C93.3) and other monocytic leukemia (C93.Z).
To report this condition, pick the subcode that matches the documentation: C93.90 (not having achieved remission), C93.91 (in remission) and C93.92 (in relapse).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific monocytic subacute leukemia codes (official index)
- specified NEC C93.Z — Other monocytic leukemia
Common questions about monocytic subacute leukemia ICD-10 codes
What is the ICD-10 code for monocytic subacute leukemia?
- C93.9 — Monocytic leukemia, unspecified (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: C93.Z.
Is C93.9 billable?
- No. C93.9 is a header code. Report one of its more specific subcodes instead.