O99 - Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
O99.3 - Mental disorders and diseases of the nervous system complicating pregnancy, childbirth and the puerperium
O99.31 - Alcohol use complicating pregnancy, childbirth, and the puerperium
O99.310 - Alcohol use complicating pregnancy, unspecified trimester
O99.311 - Alcohol use complicating pregnancy, first trimester
O99.312 - Alcohol use complicating pregnancy, second trimester
O99.313 - Alcohol use complicating pregnancy, third trimester
O99.314 - Alcohol use complicating childbirth
O99.315 - Alcohol use complicating the puerperium
O99.32 - Drug use complicating pregnancy, childbirth, and the puerperium
O99.320 - Drug use complicating pregnancy, unspecified trimester
O99.321 - Drug use complicating pregnancy, first trimester
O99.322 - Drug use complicating pregnancy, second trimester
O99.323 - Drug use complicating pregnancy, third trimester
O99.324 - Drug use complicating childbirth
O99.325 - Drug use complicating the puerperium
O99.33 - Smoking (tobacco) complicating pregnancy, childbirth, and the puerperium
O99.330 - Smoking (tobacco) complicating pregnancy, unspecified trimester
O99.331 - Smoking (tobacco) complicating pregnancy, first trimester
O99.332 - Smoking (tobacco) complicating pregnancy, second trimester
O99.333 - Smoking (tobacco) complicating pregnancy, third trimester
O99.334 - Smoking (tobacco) complicating childbirth
O99.335 - Smoking (tobacco) complicating the puerperium
O99.34 - Other mental disorders complicating pregnancy, childbirth, and the puerperium
O99.340 - Other mental disorders complicating pregnancy, unspecified trimester
O99.341 - Other mental disorders complicating pregnancy, first trimester
O99.342 - Other mental disorders complicating pregnancy, second trimester
O99.343 - Other mental disorders complicating pregnancy, third trimester
O99.344 - Other mental disorders complicating childbirth
O99.345 - Other mental disorders complicating the puerperium
O99.35 - Diseases of the nervous system complicating pregnancy, childbirth, and the puerperium
O99.350 - Diseases of the nervous system complicating pregnancy, unspecified trimester
O99.351 - Diseases of the nervous system complicating pregnancy, first trimester
O99.352 - Diseases of the nervous system complicating pregnancy, second trimester
O99.353 - Diseases of the nervous system complicating pregnancy, third trimester
O99.354 - Diseases of the nervous system complicating childbirth
O99.355 - Diseases of the nervous system complicating the puerperium