ICD-10 C93
Non-Billable HeaderMonocytic leukemia
About ICD-10-CM C93
ICD-10-CM code C93 represents Monocytic leukemia. This is a non-billable header code in the chapter (block C93). The 2026 edition of ICD-10-CM C93 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with C93. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- personal history of leukemia (Z85.6)
Includes
- monocytoid leukemia
Medicare LCD Coverage for C93
Local Coverage Determinations (LCDs) from CMS MACs that list C93 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing C93.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but C93 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with C93
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To C93
Other codes in section C81-C96 (Malignant neoplasms of lymphoid, hematopoietic and related tissue).
ICD-10 C93, Billing FAQ
Is ICD-10 code C93 billable? +
No, C93 is a non-billable header code. Use a more specific child code from block C93 when submitting claims.
What codes are Type 1 Excludes for C93? +
Type 1 Excludes (never code together with C93): personal history of leukemia (Z85.6)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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