C91.9 Lymphoid leukemia, unspecified

Non-billable header with 3 child codes.

Applies from C91 Lymphoid leukemia

Excludes1 (never code together)

• personal history of leukemia (Z85.6)

Codes under C91.9

• C91.90 Lymphoid leukemia, unspecified not having achieved remission
• C91.91 Lymphoid leukemia, unspecified, in remission
• C91.92 Lymphoid leukemia, unspecified, in relapse

Code annotations containing back-references to C91.9

Back-references to C91

• 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)")

Diagnosis Index entries for C91.9

• Infiltrate, infiltration › lymphatic
• Leukemia, leukemic › lymphoid
• Leukemia, leukemic › subacute lymphocytic

Nearby codes

• C91.A2 Mature B-cell leukemia Burkitt-type, in relapse
• C91.Z Other lymphoid leukemia
• C91.Z0 Other lymphoid leukemia not having achieved remission
• C91.Z1 Other lymphoid leukemia, in remission
• C91.Z2 Other lymphoid leukemia, in relapse
• C91.9 Lymphoid leukemia, unspecified (this code)
• C91.90 Lymphoid leukemia, unspecified not having achieved remission
• C91.91 Lymphoid leukemia, unspecified, in remission
• C91.92 Lymphoid leukemia, unspecified, in relapse