Temporary Immunosuppression

Coding system
CTV3 (Read V3)
Coding system release
Codelist ID
Version Tag
Version ID

  • 2020-04-24


Codes indicating a diagnosis of a temporary immunosuppression.


This codelist was derived by the following method:

These original codes were aimed at creating an "immunosuppression NOS" codelist. The 3 lists were mapped into CTV3 by TPP to create one list. This list was examined by clinicians, and it was determined that it should instead become "temporary immunosuppression", so that it could be applied to only codes that were recorded recently. More details on the process are found in the issue below.


Signed off by

  • Liam Smeeth, (April 24, 2020)
  • Helen McDonald, (April 23, 2020)

Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.

We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.

CTV3ID CTV3PreferredTermDesc
42H4. Agranulocytosis
D2015 Pancytopenia - acquired
D400. (Agranulocytosis) or (Kostmann's syndrome) or (neutropenia)
D4000 Idiopathic: [agranulocytosis] or [neutropenia]
D4002 Drug induced: [agranulocytosis] or [neutropenia]
D4003 Radiation: [agranulocytosis] or [neutropenia]
D4004 Infection: [agranulocytosis] or [neutropenia]
D4006 Drug-associated neutropenia
D4008 Acquired: [neutropenia NEC] or [agranulocytosis NEC]
D400y Other specified agranulocytosis
D400z Agranulocytosis NOS
F1001 Schultz disease
Ua14c Patient immunocompromised
Ua19z Patient immunosuppressed
X20CN Pancytopenia
X20Dp Corticosteroid-induced neutrophilia
X20HQ Phagocytic cell defect
X20HR Disorder of phagocytic cell number
X20Hs Complement deficiency
X20Il Secondary immunodeficiency
X20Ip Drug-induced immunodeficiency
Xa09u Chloramphenicol-induced neutropenia
Xa97S Immunosuppressive therapy
Xa9E8 Neutropenic disorder
XaXUJ Immunosuppressant drug therapy
XE13v Pancytopenia NOS
XE14A Agranulocytopenic disorder
XE14C Drug-associated neutropenia
XE14D Neutropenia due to irradiation
XE14E Infective neutropenia
XE14G Acquired neutropenia NEC
XM0BV Predominantly B-cell defect
XM0BW Predominantly T-cell defect
XM1WJ Preventing infection of immunocompromised patient
XM1WL Reverse barrier nursing
X20HB Primary immunoglobulin catabolism abnormality
X20HC Immunoglobulin hypercatabolism
X20HD Familial immunoglobulin hypercatabolism
X20HP Benign combined immunodeficiency
BBmC. [M] T-gamma lymphoproliferative disease

Codes not in the full codelist are in faint grey.