2026 ICD-10-CM Diagnosis Code Z33.1Pregnant state, incidental

AHRQ’s CCSR groups this code into broader clinical categories.

• Fetal Viability

  the potential of the fetus to survive outside the uterus after birth, natural or induced. fetal viability depends largely on the fetal organ maturity, and environmental conditions.

• Abortion, Spontaneous

  expulsion of the product of fertilization before completing the term of gestation and without deliberate interference.

• Advanced Maternal Age

  pregnancy in women at least 35 years old at the time of delivery. this was formerly known as geriatric pregnancy.

• Birth Intervals

  the lengths of intervals between births to women in the population.

• Calcium-Calmodulin-Dependent Protein Kinase Type 1

  a monomeric calcium-calmodulin-dependent protein kinase subtype that is expressed in a broad variety of mammalian cell types. its expression is regulated by the action of calcium-calmodulin-dependent protein kinase kinase. several isoforms of this enzyme subtype are encoded by distinct genes.

• Chorea Gravidarum

  a rare movement disorder developed during pregnancy, characterized by involuntary jerky motion (chorea) and inability to maintain stable position of body parts (athetosis). rheumatic fever and collagen vascular disorders are frequently associated with this disease. chorea may vary from mild to severe and occurs in approximately 1 per 2,000 to 3,000 pregnancies. (from md med j 1997 sep;46(8):436-9)

• Diabetes, Gestational

  diabetes mellitus induced by pregnancy but resolved at the end of pregnancy. it does not include previously diagnosed diabetics who become pregnant (pregnancy in diabetics). gestational diabetes usually develops in late pregnancy when insulin antagonistic hormones peaks leading to insulin resistance; glucose intolerance; and hyperglycemia.

• Family Planning Services

  health care programs or services designed to assist individuals in the planning of family size. various methods of contraception can be used to control the number and timing of childbirths.

• Gestational Weight Gain

  increase in body weight of the mother during the course of her pregnancy.

• Glycodelin

  a lipocalin that is the most abundant protein synthesized and secreted by the endometrium from mid-luteal phase of the menstrual cycle through early pregnancy.

• Hydatidiform Mole

  trophoblastic hyperplasia associated with normal gestation, or molar pregnancy. it is characterized by the swelling of the chorionic villi and elevated human chorionic gonadotropin. hydatidiform moles or molar pregnancy may be categorized as complete or partial based on their gross morphology, histopathology, and karyotype.

• Hyperemesis Gravidarum

  intractable vomiting that develops in early pregnancy and persists. this can lead to dehydration and weight loss.

• Hypertension, Pregnancy-Induced

  a condition in pregnant people with elevated systolic (>140 mm hg) and diastolic (>90 mm hg) blood pressure on at least two occasions 6 h apart. hypertension complicates 8-10% of all pregnancies, generally after 20 weeks of gestation. gestational hypertension can be divided into several broad categories according to the complexity and associated symptoms, such as edema; proteinuria; seizures; abnormalities in blood coagulation and liver functions.

• Illegitimacy

  the state of birth outside of wedlock. it may refer to the offspring or the parents.

• Luteoma

  an ovarian neoplasm composed of luteal cells derived from luteinized granulosa cells and theca cells. luteomas respond to gonadotropins, and vary in their hormone production (progesterone; estrogens; or androgens). during pregnancy, a transient type of luteoma may develop due to an exaggerated luteinization of the ovary.

• Maternal Mortality

  maternal deaths resulting from complications of pregnancy and childbirth in a given population.

• Peripartum Cardiomyopathy

  a rare form of dilated cardiomyopathy which causes heart enlargement and weakness during the last month of pregnancy or within five months of delivery.

• Phenylketonuria, Maternal

  a condition occurring in untreated or partially treated females with phenylketonuria when they become pregnant. this may result in damages to the fetus, including microcephaly; mental retardation; congenital heart disease; fetal growth retardation; and craniofacial abnormalities. (from am j med genet 1997 mar 3;69(1):89-95)

• Placental Lactogen

  a polypeptide hormone of approximately 25 kda that is produced by the syncytiotrophoblasts of the placenta, also known as chorionic somatomammotropin. it has both growth hormone and prolactin activities on growth, lactation, and luteal steroid production. in women, placental lactogen secretion begins soon after implantation and increases to 1 g or more a day in late pregnancy. placental lactogen is also an insulin antagonist.

• Pre-Eclampsia

  a complication of pregnancy, characterized by a complex of symptoms including maternal hypertension and proteinuria with or without pathological edema. symptoms may range between mild and severe. pre-eclampsia usually occurs after the 20th week of gestation, but may develop before this time in the presence of trophoblastic disease.

• Pregnancy

  the status during which female mammals carry their developing young (embryos or fetuses) in utero before birth, beginning from fertilization to birth.

• Pregnancy Complications

  conditions or pathological processes associated with pregnancy. they can occur during or after pregnancy, and range from minor discomforts to serious diseases that require medical interventions. they include diseases in pregnant females, and pregnancies in females with diseases.

• Pregnancy Complications, Cardiovascular

  the co-occurrence of pregnancy and a cardiovascular disease. the disease may precede or follow fertilization and it may or may not have a deleterious effect on the pregnant woman or fetus.

• Pregnancy Complications, Hematologic

  the co-occurrence of pregnancy and a blood disease (hematologic diseases) which involves blood cells or coagulation factors. the hematologic disease may precede or follow fertilization and it may or may not have a deleterious effect on the pregnant woman or fetus.

• Pregnancy Complications, Infectious

  the co-occurrence of pregnancy and an infection. the infection may precede or follow fertilization.

• Pregnancy Complications, Neoplastic

  the co-occurrence of pregnancy and neoplasms. the neoplastic disease may precede or follow fertilization.

• Pregnancy Complications, Parasitic

  the co-occurrence of pregnancy and parasitic diseases. the parasitic infection may precede or follow fertilization.

• Pregnancy in Adolescence

  pregnancy in human adolescent females under the age of 19.

• Pregnancy in Diabetics

  the state of pregnancy in women with diabetes mellitus. this does not include either symptomatic diabetes or glucose intolerance induced by pregnancy (diabetes, gestational) which resolves at the end of pregnancy.

• Pregnancy in Obesity

  body mass index in pregnant people that is excessively above the recommended cut-off.

• Pregnancy Maintenance

  physiological mechanisms that sustain the state of pregnancy.

• Pregnancy Outcome

  results of conception and ensuing pregnancy, including live birth; stillbirth; or spontaneous abortion. the outcome may follow natural or artificial insemination or any of the various assisted reproductive techniques, such as embryo transfer or fertilization in vitro.

• Pregnancy Proteins

  proteins produced by organs of the mother or the placenta during pregnancy. these proteins may be pregnancy-specific (present only during pregnancy) or pregnancy-associated (present during pregnancy or under other conditions such as hormone therapy or certain malignancies.)

• Pregnancy Rate

  the ratio of the number of conceptions (conception) including live birth; stillbirth; and fetal losses, to the mean number of females of reproductive age in a population during a set time period.

• Pregnancy Reduction, Multifetal

  selective abortion of one or more embryos or fetuses in a multiple gestation pregnancy. the usual goal is to improve the outcome for the remaining embryos or fetuses.

• Pregnancy Tests

  tests to determine whether or not an individual is pregnant.

• Pregnancy Tests, Immunologic

  methods of detecting pregnancy by examining the levels of human chorionic gonadotropin (hcg) in plasma or urine.

• Pregnancy Trimester, First

  the beginning third of a human pregnancy, from the first day of the last normal menstrual period (menstruation) through the completion of 14 weeks (98 days) of gestation.

• Pregnancy Trimester, Second

  the middle third of a human pregnancy, from the beginning of the 15th through the 28th completed week (99 to 196 days) of gestation.

• Pregnancy Trimester, Third

  the last third of a human pregnancy, from the beginning of the 29th through the 42nd completed week (197 to 294 days) of gestation.

• Pregnancy Trimesters

  the three approximately equal periods of a normal human pregnancy. each trimester is about three months or 13 to 14 weeks in duration depending on the designation of the first day of gestation.

• Pregnancy, Abdominal

  a type of ectopic pregnancy in which the embryo, mammalian implants in the abdominal cavity instead of in the endometrium of the uterus.

• Pregnancy, Angular

  a rare type of abnormal pregnancy in which embryo implantation occurs at a lateral angle of the uterus, medial to the uterotubal junction and the round ligament of uterus.

• Pregnancy, Animal

  the process of bearing developing young (embryos or fetuses) in utero in non-human mammals, beginning from fertilization to birth.

• Pregnancy, Cornual

  a type of pregnancy in which the embryo implantation occurs in the horn of the uterus instead of in the uterine cavity, i.e. at the junction of the uterus and one of the fallopian tubes.

• Pregnancy, Ectopic

  a potentially life-threatening condition in which embryo implantation occurs outside the cavity of the uterus. most ectopic pregnancies (>96%) occur in the fallopian tubes, known as tubal pregnancy. they can be in other locations, such as uterine cervix; ovary; and abdominal cavity (pregnancy, abdominal).

• Pregnancy, Heterotopic

  multiple pregnancy with embryo implantation occuring at different locations, involving both an intrauterine site and an extrauterine (ectopic pregnancy) site.

• Pregnancy, High-Risk

  pregnancy in which the mother and/or fetus are at greater than normal risk of morbidity or mortality. causes include inadequate prenatal care, previous obstetrical history (abortion, spontaneous), pre-existing maternal disease, pregnancy-induced disease (gestational hypertension), and multiple pregnancy, as well as advanced maternal age above 35.

• Pregnancy, Interstitial

  a type of ectopic pregnancy in which the extrauterine embryo implantation occurs in the portion of the fallopian tube that traverses the muscular wall of the uterus.

• Pregnancy, Multiple

  the condition of carrying two or more fetuses simultaneously.

• Pregnancy, Ovarian

  a type of pregnancy in which embryo implantation occurs in an ovary instead of in the uterine cavity.

• Pregnancy, Prolonged

  a term used to describe pregnancies that exceed the upper limit of a normal gestational period. in humans, a prolonged pregnancy is defined as one that extends beyond 42 weeks (294 days) after the first day of the last menstrual period (menstruation), or birth with gestational age of 41 weeks or more.

• Pregnancy, Quadruplet

  the condition of carrying quadruplets simultaneously.

• Pregnancy, Quintuplet

  the condition of carrying quintuplets simultaneously.

• Pregnancy, Triplet

  the condition of carrying triplets simultaneously.

• Pregnancy, Tubal

  the most common (>96%) type of ectopic pregnancy in which the extrauterine embryo implantation occurs in the fallopian tube, usually in the ampullary region where fertilization takes place.

• Pregnancy, Twin

  the condition of carrying twins simultaneously.

• Pregnancy, Unplanned

  unintended or accidental pregnancy, including pregnancy resulting from failed contraceptive measures.

• Pregnancy, Unwanted

  pregnancy, usually accidental, that is not desired by the parent or parents.

• Pregnancy-Associated alpha 2-Macroglobulins

  large (>160 kda) glycoproteins with electrophoretic mobility of alpha-globulins, found in high concentration in the plasma of pregnant people but also in a number of species including mouse, rat, and others (alpha-macroglobulins). in humans, they are always present in the circulation and are nonspecific inhibitors of proteinases, similar to complement proteins (c3; c4; c5).

• Pregnancy-Associated Plasma Protein-A

  a product of the placenta, and decidua, secreted into the maternal circulation during pregnancy. it has been identified as an igf binding protein (igfbp)-4 protease that proteolyzes igfbp-4 and thus increases igf bioavailability. it is found also in human fibroblasts, ovarian follicular fluid, and granulosa cells. the enzyme is a heterotetramer of about 500-kda.

• Pregnancy-Related Death

  death of a pregnant or birthing person during pregnancy or up to one year after the end of pregnancy from health issues related to pregnancy.

• Pregnancy-Specific beta 1-Glycoproteins

  glycoproteins with the electrophoretic mobility of beta-globulins, secreted by the placental trophoblasts into the maternal bloodstream during pregnancy. they can be detected 18 days after ovulation and reach 200 mg/ml at the end of pregnancy. they are associated with fetal well-being.

• Prenatal Nutritional Physiological Phenomena

  nutrition during pregnancy.

• Reproductive History

  an important aggregate factor in epidemiological studies of women's health. the concept usually includes the number and timing of pregnancies and their outcomes, the incidence of breast feeding, and may include age of menarche and menopause, regularity of menstruation, fertility, gynecological or obstetric problems, or contraceptive usage.

• Calcium-Calmodulin-Dependent Protein Kinase Kinase

  a regulatory calcium-calmodulin-dependent protein kinase that specifically phosphorylates calcium-calmodulin-dependent protein kinase type 1; calcium-calmodulin-dependent protein kinase type 2; calcium-calmodulin-dependent protein kinase type 4; and protein kinase b. it is a monomeric enzyme that is encoded by at least two different genes.

• Contraception

  prevention of conception by blocking fertility temporarily, or permanently (sterilization, reproductive). common means of reversible contraception include natural family planning methods; contraceptive agents; or contraceptive devices.

• Fertilization

  the fusion of a spermatozoon (spermatozoa) with an ovum thus resulting in the formation of a zygote.

• Menstruation

  the periodic shedding of the endometrium and associated menstrual bleeding in the menstrual cycle of humans and primates. menstruation is due to the decline in circulating progesterone, and occurs at the late luteal phase when luteolysis of the corpus luteum takes place.

• Quadruplets

  four individuals derived from four fetuses that were fertilized at or about the same time, developed in the uterus simultaneously, and born to the same mother.

• Quintuplets

  five individuals derived from five fetuses that were fertilized at or about the same time, developed in the uterus simultaneously, and born to the same mother.

• Triplets

  three individuals derived from three fetuses that were fertilized at or about the same time, developed in the uterus simultaneously, and born to the same mother.

• Twins

  two individuals derived from two fetuses that were fertilized at or about the same time, developed in the uterus simultaneously, and born to the same mother. twins are either monozygotic (twins, monozygotic) or dizygotic (twins, dizygotic).

Pregnancy

You're going to have a baby! It's an exciting time, but it can also feel a bit overwhelming. You may have a lot of questions, including what you can do to give your baby a healthy start. Taking care of your health while you're pregnant will help your fetus develop into a healthy baby. To do that, it's important to:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.