C93.Z2 Other monocytic leukemia, in relapse

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from C93 Monocytic leukemia

Includes

• monocytoid leukemia

Excludes1 (never code together)

• personal history of leukemia (Z85.6)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 20 — Lung and Other Severe Cancers
• CMS-HCC V22: HCC 9 — Lung and Other Severe Cancers
• RxHCC V08: HCC 19 — Leukemias and Other Hematologic Cancers
• ESRD V24: HCC 9

MS-DRG index

Defines the logic of DRG(s) 820-822 in MDC 17.

Approximate ICD-9-CM (GEMs)

• 206.82 Other monocytic leukemia, in relapse (approximate)

Code annotations containing back-references to C93.Z2

Back-references to C93

• Type 1 Excludes: C76 Malignant neoplasm of other and ill-defined sites ("malignant neoplasm of lymphoid, hematopoietic and related tissue (C81-C96)")
• Type 1 Excludes: D72.8 Other specified disorders of white blood cells ("leukemia (C91-C95)")
• Type 1 Excludes: D72.825 Bandemia ("leukemia (C91.-, C92.-, C93.-, C94.-, C95.-)")
• Code First: M36.1 Arthropathy in neoplastic disease ("leukemia (C91-C95)")
• Code First: N16 Renal tubulo-interstitial disorders in diseases classified elsewhere ("leukemia (C91-C95)")
• Code First: R50.81 Fever presenting with conditions classified elsewhere ("leukemia (C91-C95)")
• Type 1 Excludes: T66 Radiation sickness, unspecified ("leukemia (C91-C95)")
• Code First: Z15.0 Genetic susceptibility to malignant neoplasm (", if applicable, any current malignant neoplasm (C00-C75, C81-C96)")

Nearby codes

• C93.31 Juvenile myelomonocytic leukemia, in remission
• C93.32 Juvenile myelomonocytic leukemia, in relapse
• C93.Z Other monocytic leukemia
• C93.Z0 Other monocytic leukemia, not having achieved remission
• C93.Z1 Other monocytic leukemia, in remission
• C93.Z2 Other monocytic leukemia, in relapse (this code)
• C93.9 Monocytic leukemia, unspecified
• C93.90 Monocytic leukemia, unspecified, not having achieved remission
• C93.91 Monocytic leukemia, unspecified in remission
• C93.92 Monocytic leukemia, unspecified in relapse