ICD-10 Chapter XV: Pregnancy, childbirth and the puerperium
The International Statistical Classification of Diseases and Related Health Problems (ICD -10 in his last internationally valid version of 2006) classified in Chapter XV of diseases and conditions in pregnancy, childbirth and the puerperium down standing key.
O00- O08 Pregnancy with abortive outcome
O09 Duration of pregnancy
The group O09 pregnancy duration is not included in the ICD -10 WHO, but in the ICD -10-GM, which was created for the encoding in the German DRG system.