Other immunodeficiencies

This code represents a range of primary or secondary immunodeficiency disorders that do not fit into more specific categories. These conditions involve impaired function of the immune system, leading to increased susceptibility to infections, autoimmune manifestations, or lymphoproliferative disorders. The specific immune defect may be known but lacks a more precise ICD-10-CM classification.

Use this code when documentation indicates an immunodeficiency that is not otherwise specified or classifiable to a more precise D80-D84 code. This includes conditions like complement deficiencies not elsewhere classified, or other specified primary immunodeficiencies without a dedicated code. Documentation should clearly state an immunodeficiency exists and provide details that rule out more specific codes.

• Always strive for a more specific immunodeficiency code if available (e.g., D80.-, D81.-, D82.-, D83.-).
• Ensure documentation specifies the type of immunodeficiency, even if it falls into this "other" category, to support medical necessity.
• Do not use this code for HIV disease (B20) or transient hypogammaglobulinemia of infancy (D89.3).