Postal address:
WHO Collaborating Centre for Drug Statistics Methodology
Norwegian Institute of Public Health
Postboks 222 Sk°yen
0213 Oslo

Visiting/delivery address:
Myrens verksted 6H
0473 Oslo

Tel:  +47 21 07 81 60

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This group comprises preparations used in the treatment of neoplastic diseases, and immunomodulating agents.
Corticosteroids for systemic use, see H02.


Immunosuppressants are defined as agents that completely or partly suppress one or more factors in the immunosystem.


This group comprises immunosuppressants excl. corticosteroids.

The DDDs are based on prophylaxis of allograft transplant rejection if this is an approved indication.

L04AA Selective immunosuppressants

Antilymphocyte immunoglobulin from horse serum is classified in L04AA03.
Antithymocyte immunoglobulin from rabbit serum is classified in L04AA04.
Oral formulations of cladribine used in multiple sclerosis are classified in this group, while parenteral formulations for cancer are classified in L01BB.
Oral formulations of sirolimus used in organ transplantation are classified in this group, while parenteral formulations used for neoplastic diseases are classified in L01EG.
Low strength products of ofatumumab used in the treatment of relapsing multiple sclerosis (RMS) are classified in this group, while high strength products for treatment of chronic lymphocytic leukaemia (CLL) are classified in L01FA.

The DDD for muromonam-CD3 is based on combination therapy in acute allograft rejection.
The DDDs for leflunomide, abatacept and tofacitinib are based on the treatment of rheumatoid arthritis.
The DDDs for natalizumab, fingolimod, teriflunomide and alemtuzumab are based on the treatment of multiple sclerosis.
The DDD for efalizumab is based on the treatment of psoriasis.
The DDD for eculizumab is based on the dose given in the maintenance phase.
The DDDs for alemtuzumab and cladribine are based on the average calculated daily dose in the first two years (year 1 and 2) when all patients receive medication.

    ATC code  Name  DDD  U Adm.R Note
    L04AA47 inebilizumab    

List of abbreviations

Last updated: 2023-01-23