2,667 codes
Unacceptable principal diagnosis codes
Codes that describe a circumstance influencing health status rather than a current illness, so they are unacceptable as the principal diagnosis for an inpatient stay. Source: Medicare Code Editor (MCE) v44, effective October 1, 2026.
Chapter 15: Pregnancy, childbirth and the puerperium
- O09.00Supervision of pregnancy with history of infertility, unspecified trimester
- O09.01Supervision of pregnancy with history of infertility, first trimester
- O09.02Supervision of pregnancy with history of infertility, second trimester
- O09.03Supervision of pregnancy with history of infertility, third trimester
- O09.10Supervision of pregnancy with history of ectopic pregnancy, unspecified trimester
- O09.11Supervision of pregnancy with history of ectopic pregnancy, first trimester
- O09.12Supervision of pregnancy with history of ectopic pregnancy, second trimester
- O09.13Supervision of pregnancy with history of ectopic pregnancy, third trimester
- O09.211Supervision of pregnancy with history of pre-term labor, first trimester
- O09.212Supervision of pregnancy with history of pre-term labor, second trimester
- O09.213Supervision of pregnancy with history of pre-term labor, third trimester
- O09.219Supervision of pregnancy with history of pre-term labor, unspecified trimester
- O09.291Supervision of pregnancy with other poor reproductive or obstetric history, first trimester
- O09.292Supervision of pregnancy with other poor reproductive or obstetric history, second trimester
- O09.293Supervision of pregnancy with other poor reproductive or obstetric history, third trimester
- O09.299Supervision of pregnancy with other poor reproductive or obstetric history, unspecified trimester
- O09.30Supervision of pregnancy with insufficient antenatal care, unspecified trimester
- O09.31Supervision of pregnancy with insufficient antenatal care, first trimester
- O09.32Supervision of pregnancy with insufficient antenatal care, second trimester
- O09.33Supervision of pregnancy with insufficient antenatal care, third trimester
- O09.40Supervision of pregnancy with grand multiparity, unspecified trimester
- O09.41Supervision of pregnancy with grand multiparity, first trimester
- O09.42Supervision of pregnancy with grand multiparity, second trimester
- O09.43Supervision of pregnancy with grand multiparity, third trimester
- O09.511Supervision of elderly primigravida, first trimester
- O09.512Supervision of elderly primigravida, second trimester
- O09.513Supervision of elderly primigravida, third trimester
- O09.519Supervision of elderly primigravida, unspecified trimester
- O09.521Supervision of elderly multigravida, first trimester
- O09.522Supervision of elderly multigravida, second trimester
- O09.523Supervision of elderly multigravida, third trimester
- O09.529Supervision of elderly multigravida, unspecified trimester
- O09.611Supervision of young primigravida, first trimester
- O09.612Supervision of young primigravida, second trimester
- O09.613Supervision of young primigravida, third trimester
- O09.619Supervision of young primigravida, unspecified trimester
- O09.621Supervision of young multigravida, first trimester
- O09.622Supervision of young multigravida, second trimester
- O09.623Supervision of young multigravida, third trimester
- O09.629Supervision of young multigravida, unspecified trimester
- O09.70Supervision of high risk pregnancy due to social problems, unspecified trimester
- O09.71Supervision of high risk pregnancy due to social problems, first trimester
- O09.72Supervision of high risk pregnancy due to social problems, second trimester
- O09.73Supervision of high risk pregnancy due to social problems, third trimester
- O09.811Supervision of pregnancy resulting from assisted reproductive technology, first trimester
- O09.812Supervision of pregnancy resulting from assisted reproductive technology, second trimester
- O09.813Supervision of pregnancy resulting from assisted reproductive technology, third trimester
- O09.819Supervision of pregnancy resulting from assisted reproductive technology, unspecified trimester
- O09.821Supervision of pregnancy with history of in utero procedure during previous pregnancy, first trimester
- O09.822Supervision of pregnancy with history of in utero procedure during previous pregnancy, second trimester
- O09.823Supervision of pregnancy with history of in utero procedure during previous pregnancy, third trimester
- O09.829Supervision of pregnancy with history of in utero procedure during previous pregnancy, unspecified trimester
- O09.891Supervision of other high risk pregnancies, first trimester
- O09.892Supervision of other high risk pregnancies, second trimester
- O09.893Supervision of other high risk pregnancies, third trimester
- O09.899Supervision of other high risk pregnancies, unspecified trimester
- O09.90Supervision of high risk pregnancy, unspecified, unspecified trimester
- O09.91Supervision of high risk pregnancy, unspecified, first trimester
- O09.92Supervision of high risk pregnancy, unspecified, second trimester
- O09.93Supervision of high risk pregnancy, unspecified, third trimester
- O09.A0Supervision of pregnancy with history of molar pregnancy, unspecified trimester
- O09.A1Supervision of pregnancy with history of molar pregnancy, first trimester
- O09.A2Supervision of pregnancy with history of molar pregnancy, second trimester
- O09.A3Supervision of pregnancy with history of molar pregnancy, third trimester
- O36.80X0Pregnancy with inconclusive fetal viability, not applicable or unspecified
- O36.80X1Pregnancy with inconclusive fetal viability, fetus 1
- O36.80X2Pregnancy with inconclusive fetal viability, fetus 2
- O36.80X3Pregnancy with inconclusive fetal viability, fetus 3
- O36.80X4Pregnancy with inconclusive fetal viability, fetus 4
- O36.80X5Pregnancy with inconclusive fetal viability, fetus 5
- O36.80X9Pregnancy with inconclusive fetal viability, other fetus
- O94Sequelae of complication of pregnancy, childbirth, and the puerperium
- O99.820Streptococcus B carrier state complicating pregnancy
- O99.825Streptococcus B carrier state complicating the puerperium