D89

D89: Other disorders involving the immune mechanism, not elsewhere classified

Non-billable headerICD-10-CM

D89 is a non-billable header ICD-10-CM code for other disorders involving the immune mechanism, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

hyperglobulinemia NOS (R77.1)
monoclonal gammopathy (of undetermined significance) (D47.2)

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

transplant failure and rejection (T86.-)

Other codes that can never be billed with D89

Their own Excludes1 notes name this code, so the conflict is not listed above.

D69Purpura and other hemorrhagic conditions
D72Other disorders of white blood cells
E88.0Disorders of plasma-protein metabolism, not elsewhere classified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead D89

7 child codes. Green means billable.