ICD-10 Code for Pregnancy

The default ICD-10-CM 2027 code for pregnancy (single) (uterine) is Z33.1 – Pregnant state, incidental. More specific codes depend on the details documented, as listed in the official index (385 codes, 123 billable).

Main code: Z33.1 – Pregnant state, incidental
Billable: Yes
See also: Delivery and Puerperal

Index entries for Pregnancy

Note: The Tabular must be reviewed for assignment of the appropriate character indicating the trimester of the pregnancy
Note: The Tabular must be reviewed for assignment of appropriate seventh character for multiple gestation codes in Chapter 15
abdominal (ectopic) – O00.00
- with intrauterine pregnancy – O00.01
- with viable fetus – O36.7- (header)
ampullar – O00.10- (header)
- with intrauterine pregnancy – O00.11- (header)
biochemical – O02.81
broad ligament – O00.80
- with intrauterine pregnancy – O00.81
cervical – O00.41
- with intrauterine pregnancy – O00.42
chemical – O02.81
complicated NOS – O26.9- (header)
complicated by (care of) (management affected by)
- abnormal, abnormality
  - cervix – O34.4- (header)
    - causing obstructed labor – O65.5
  - cord (umbilical) – O69.9 (header)
  - fetal heart rate or rhythm – O36.83- (header)
  - findings on antenatal screening of mother – O28.9
    - biochemical – O28.1
    - cytological – O28.2
    - chromosomal – O28.5
    - genetic – O28.5
    - hematological – O28.0
    - radiological – O28.4
    - specified NEC – O28.8
    - ultrasonic – O28.3
  - glucose (tolerance) – O99.810
  - pelvic organs – O34.9- (header)
    - specified NEC – O34.8- (header)
      - causing obstructed labor – O65.5
  - pelvis (bony) (major) – O33.0
  - perineum – O34.7- (header)
  - position
    - placenta – O44.0- (header)
      - with hemorrhage – O44.1- (header)
    - uterus – O34.59- (header)
  - uterus – O34.59- (header)
    - causing obstructed labor – O65.5
    - congenital – O34.0- (header)
  - vagina – O34.6- (header)
    - causing obstructed labor – O65.5
  - vulva – O34.7- (header)
    - causing obstructed labor – O65.5
- abruptio placentae – see Abruptio placentae
- abscess or cellulitis
  - bladder – O23.1- (header)
  - breast – O91.11- (header)
  - genital organ or tract – O23.9- (header)
- abuse
  - physical – O9A.31- (header)
  - psychological – O9A.51- (header)
  - sexual – O9A.41- (header)
- adverse effect anesthesia – O29.9- (header)
  - aspiration pneumonitis – O29.01- (header)
  - cardiac arrest – O29.11- (header)
  - cardiac complication NEC – O29.19- (header)
  - cardiac failure – O29.12- (header)
  - central nervous system complication NEC – O29.29- (header)
  - cerebral anoxia – O29.21- (header)
  - failed or difficult intubation – O29.6- (header)
  - inhalation of stomach contents or secretions NOS – O29.01- (header)
  - local, toxic reaction – O29.3X (header)
  - Mendelson's syndrome – O29.01- (header)
  - pressure collapse of lung – O29.02- (header)
  - pulmonary complications NEC – O29.09- (header)
  - specified NEC – O29.8X- (header)
  - spinal and epidural type NEC – O29.5X (header)
    - induced headache – O29.4- (header)
- albuminuria – O12.1- (header) – see also Proteinuria, gestational
- alcohol use – O99.31- (header)
- amnionitis – O41.12- (header)
- anaphylactoid syndrome of pregnancy – O88.01- (header)
- anemia (conditions in D50-D64) (pre-existing) – O99.01- (header)
  - complicating childbirth – O99.02
  - complicating the puerperium – O99.03
- antepartum hemorrhage – O46.9- (header)
  - with coagulation defect – see Hemorrhage, antepartum, with coagulation defect
  - specified NEC – O46.8X- (header)
- appendicitis – O99.61- (header)
- atrophy (yellow) (acute) liver (subacute) – O26.61- (header)
- bariatric surgery status – O99.84- (header)
- bicornis or bicornuate uterus – O34.0- (header)
- biliary tract problems – O26.61- (header)
- breech presentation – O32.1 (header)
- cardiovascular diseases (conditions in I00-I09, I20-I52, I70-I99) – O99.41- (header)
- cerebrovascular disorders (conditions in I60-I69) – O99.41- (header)
- cervical shortening – O26.87- (header)
- cervicitis – O23.51- (header)
- cesarean scar defect (isthmocele) – O34.22
- chloasma (gravidarum) – O26.89- (header)
- cholestasis (intrahepatic) – O26.64- (header)
- cholecystitis – O99.61- (header)
- chorioamnionitis – O41.12- (header)
- circulatory system disorder (conditions in I00-I09, I20-I99, O99.41-)
- compound presentation – O32.6 (header)
- conjoined twins – O30.02- (header)
- connective system disorders (conditions in M00-M99) – O99.891
- contracted pelvis (general) – O33.1
  - inlet – O33.2
  - outlet – O33.3 (header)
- convulsions (eclamptic) (uremic) – O15.9- – see also Eclampsia
- cracked nipple – O92.11- (header)
- cystitis – O23.1- (header)
- cystocele – O34.8- (header)
- death of fetus (near term) – O36.4 (header)
  - early pregnancy – O02.1
  - of one fetus or more in multiple gestation – O31.2- (header)
- deciduitis – O41.14- (header)
- decreased fetal movement – O36.81- (header)
- dental problems – O99.61- (header)
- diabetes (mellitus) – O24.91- (header)
  - gestational (pregnancy induced) – see Diabetes, gestational
  - pre-existing – O24.31- (header)
    - specified NEC – O24.81- (header)
    - type 1 – O24.01- (header)
    - type 2 – O24.11- (header)
- digestive system disorders (conditions in K00-K93) – O99.61- (header)
- diseases of – see Pregnancy, complicated by, specified body system disease
  - biliary tract – O26.61- (header)
  - blood NEC (conditions in D65-D77) – O99.11- (header)
  - liver – O26.61- (header)
  - specified NEC – O99.891
- disorders of – see Pregnancy, complicated by, specified body system disorder
  - amniotic fluid and membranes – O41.9- (header)
    - specified NEC – O41.8X- (header)
  - biliary tract – O26.61- (header)
  - ear and mastoid process (conditions in H60-H95) – O99.891
  - eye and adnexa (conditions in H00-H59) – O99.891
  - liver – O26.61- (header)
  - skin (conditions in L00-L99) – O99.71- (header)
  - specified NEC – O99.891
- displacement, uterus NEC – O34.59- (header)
  - causing obstructed labor – O65.5
- disproportion (due to) – O33.9
  - fetal (ascites) (hydrops) (meningomyelocele) (sacral teratoma) (tumor) – O33.7 (header)
  - generally contracted pelvis – O33.1
  - hydrocephalic fetus – O33.6 (header)
  - inlet contraction of pelvis – O33.2
  - mixed maternal and fetal origin – O33.4 (header)
  - specified NEC – O33.8
- double uterus – O34.0- (header)
  - causing obstructed labor – O65.5
- drug use (conditions in F11-F19) – O99.32- (header)
- eclampsia, eclamptic (coma) (convulsions) (delirium) (nephritis) (uremia) – O15.- (header) – see also Eclampsia
- ectopic pregnancy – see Pregnancy, ectopic
- edema – O12.0- (header)
  - with
    - gestational hypertension, mild – O14.0- (header) – see also Pre-eclampsia
    - proteinuria – O12.2- (header)
- effusion, amniotic fluid – see Pregnancy, complicated by, premature rupture of membranes
- elderly
  - multigravida – O09.52- (header)
  - primigravida – O09.51- (header)
- embolism – O88.- (header) – see also Embolism, obstetric, pregnancy
- endocrine diseases NEC – O99.28- (header)
- endometritis – O86.12
- excessive weight gain – O26.0- (header)
- exhaustion – O26.81- (header)
  - during labor and delivery – O75.81
- face presentation – O32.3 (header)
- failed induction of labor – O61.9
  - instrumental – O61.1
  - mechanical – O61.1
  - medical – O61.0
  - specified NEC – O61.8
  - surgical – O61.1
- failed or difficult intubation for anesthesia – O29.6- (header)
- false labor (pains) – O47.9
  - at or after 37 completed weeks of pregnancy – O47.1
  - before 37 completed weeks of pregnancy – O47.0- (header)
- fatigue – O26.81- (header)
  - during labor and delivery – O75.81
- fatty metamorphosis of liver – O26.61- (header)
- female genital mutilation – O34.8- (header) – N90.81- (header) [manifestation]
- fetal (maternal care for)
  - abnormality or damage – O35.9 (header)
    - acid-base balance – O68
    - specified type NEC – O35.8 (header)
  - acidemia – O68
  - acidosis – O68
  - agenesis of corpus callosum – O35.01 (header)
  - alkalosis – O68
  - anemia and thrombocytopenia – O36.82- (header)
  - anencephaly – O35.02 (header)
  - bradycardia – O36.83- (header)
  - cardiac anomalies – O35.B (header)
  - central nervous system malformation or damage – O35.00 (header)
    - specified type NEC – O35.09 (header)
  - choroid plexus cysts – O35.03 (header)
  - chromosomal abnormality (conditions in Q90-Q99) – O35.10 (header)
    - Down syndrome – O35.13 (header)
    - Edwards syndrome – O35.12 (header)
    - Klinefelter syndrome – O35.15 (header)
    - Patau syndrome – O35.11 (header)
    - sex chromosome – O35.15 (header)
    - specified NEC – O35.19 (header)
    - Trisomy 13 – O35.11 (header)
    - Trisomy 18 – O35.12 (header)
    - Trisomy 21 – O35.13 (header)
    - Trisomy X – O35.15 (header)
    - Turner Syndrome – O35.14 (header)
    - XYY syndrome – O35.15 (header)
  - conjoined twins – O30.02- (header)
  - damage from
    - amniocentesis – O35.7 (header)
    - biopsy procedures – O35.7 (header)
    - drug addiction – O35.5 (header)
    - hematological investigation – O35.7 (header)
    - intrauterine contraceptive device – O35.7 (header)
    - maternal
      - alcohol addiction – O35.4 (header)
      - cytomegalovirus infection – O35.3 (header)
      - disease NEC – O35.8 (header)
      - drug addiction – O35.5 (header)
      - listeriosis – O35.8 (header)
      - rubella – O35.3 (header)
      - toxoplasmosis – O35.8 (header)
      - viral infection – O35.3 (header)
    - medical procedure NEC – O35.7 (header)
    - radiation – O35.6 (header)
  - death (near term) – O36.4 (header)
    - early pregnancy – O02.1
  - decreased movement – O36.81- (header)
  - depressed heart rate tones – O36.83- (header)
  - disproportion due to deformity (fetal) – O33.7 (header)
  - encephalocele – O35.04 (header)
  - excessive growth (large for dates) – O36.6- (header)
  - facial anomalies – O35.A (header)
  - gastrointestinal anomalies – O35.D (header)
  - genitourinary anomalies – O35.E (header)
  - growth retardation – O36.59- (header)
    - light for dates – O36.59- (header)
    - small for dates – O36.59- (header)
  - heart rate irregularity (abnormal variability) (bradycardia) (decelerations) (tachycardia) – O36.83- (header)
  - hereditary disease – O35.2 (header)
  - holoprosencephaly – O35.05 (header)
  - hydrocephalus – O35.06 (header)
  - hydrocephaly – O35.06 (header)
  - intrauterine death – O36.4 (header)
  - microcephaly – O35.07 (header)
  - musculoskeletal anomalies
    - lower extremities – O35.H (header)
    - trunk – O35.F (header)
    - upper extremities – O35.G (header)
  - non-reassuring heart rate or rhythm – O36.83- (header)
  - poor growth – O36.59- (header)
    - light for dates – O36.59- (header)
    - small for dates – O36.59- (header)
  - problem – O36.9- (header)
    - specified NEC – O36.89- (header)
  - pulmonary anomalies – O35.C (header)
  - reduction (elective) – O31.3- (header)
  - selective termination – O31.3- (header)
  - spina bifida – O35.08 (header)
  - thrombocytopenia – O36.82- (header)
- fibroid (tumor) (uterus) – O34.1- (header)
- fissure of nipple – O92.11- (header)
- gallstones – O99.61- (header)
- gastric banding status – O99.84- (header)
- gastric bypass status – O99.84- (header)
- genital herpes (asymptomatic) (history of) (inactive) – O98.3- (header)
- genital tract infection – O23.9- (header)
- glomerular diseases (conditions in N00-N07) – O26.83- (header)
  - with hypertension, pre-existing – see Hypertension, complicating, pregnancy, pre-existing, with, renal disease
- gonorrhea – O98.21- (header)
- grand multiparity – O09.4 (header)
- habitual aborter – see Pregnancy, complicated by, recurrent pregnancy loss
- HELLP syndrome (hemolysis, elevated liver enzymes and low platelet count) – O14.2- (header)
- hemorrhage
  - antepartum – see Hemorrhage, antepartum
  - before 20 completed weeks gestation – O20.9
    - specified NEC – O20.8
  - due to premature separation, placenta – O45.9- (header) – see also Abruptio placentae
  - early – O20.9
    - specified NEC – O20.8
  - threatened abortion – O20.0
- hemorrhoids – O22.4- (header)
- hepatitis (viral) – O98.41- (header)
- herniation of uterus – O34.59- (header)
- high
  - head at term – O32.4 (header)
  - risk – see Supervision (of) (for), high-risk
- history of in utero procedure during previous pregnancy – O09.82- (header)
- HIV – O98.71- (header)
- human immunodeficiency virus (HIV) – O98.71- (header)
- hydatidiform mole – O01.9- – see also Mole, hydatidiform
- hydramnios – O40.- (header)
- hydrocephalic fetus (disproportion) – O33.6 (header)
- hydrops
  - amnii – O40.- (header)
  - fetalis – O36.2- (header)
    - associated with isoimmunization – O36.11- (header) – see also Pregnancy, complicated by, isoimmunization
- hydrorrhea – O42.90
- hyperemesis (gravidarum) (mild) – O21.0- – see also Hyperemesis, gravidarum
- hypertension – see Hypertension, complicating pregnancy
- hypertensive
  - heart and renal disease, pre-existing – see Hypertension, complicating, pregnancy, pre-existing, with, heart disease, with renal disease
  - heart disease, pre-existing – see Hypertension, complicating, pregnancy, pre-existing, with, heart disease
  - renal disease, pre-existing – see Hypertension, complicating, pregnancy, pre-existing, with, renal disease
- hypotension – O26.5- (header)
- immune disorders NEC (conditions in D80-D89) – O99.11- (header)
- incarceration, uterus – O34.51- (header)
- incompetent cervix – O34.3- (header)
- inconclusive fetal viability – O36.80 (header)
- infection (s) – O98.91- (header)
  - amniotic fluid or sac – O41.10- (header)
  - bladder – O23.1- (header)
  - carrier state NEC – O99.830
    - streptococcus B – O99.820
  - genital organ or tract – O23.9- (header)
    - specified NEC – O23.59- (header)
  - genitourinary tract – O23.9- (header)
  - gonorrhea – O98.21- (header)
  - hepatitis (viral) – O98.41- (header)
  - HIV – O98.71- (header)
  - human immunodeficiency virus (HIV) – O98.71- (header)
  - intrauterine – O41.12 (header)
  - kidney – O23.0- (header)
  - nipple – O91.01- (header)
  - parasitic disease – O98.91- (header)
    - specified NEC – O98.81- (header)
  - protozoal disease – O98.61- (header)
  - sexually transmitted NEC – O98.31- (header)
  - specified type NEC – O98.81- (header)
  - syphilis – O98.11- (header)
  - tuberculosis – O98.01- (header)
  - urethra – O23.2- (header)
  - urinary (tract) – O23.4- (header)
    - specified NEC – O23.3- (header)
  - viral disease – O98.51- (header)
- inflammation
  - intrauterine – O41.12 (header)
- injury or poisoning (conditions in S00-T88) – O9A.21- (header)
  - due to abuse
    - physical – O9A.31- (header)
    - psychological – O9A.51- (header)
    - sexual – O9A.41- (header)
- insufficient
  - prenatal care – O09.3- (header)
  - weight gain – O26.1- (header)
- insulin resistance – O26.89 (header)
- intrauterine fetal death (near term) – O36.4 (header)
  - early pregnancy – O02.1
  - multiple gestation (one fetus or more) – O31.2- (header)
- isoimmunization – O36.11- (header)
  - anti-A sensitization – O36.11- (header)
  - anti-B sensitization – O36.19- (header)
  - Rh – O36.09- (header)
    - anti-D antibody – O36.01- (header)
  - specified NEC – O36.19- (header)
- laceration of uterus NEC – O71.81
- malformation
  - central nervous system – O35.00 (header)
    - specified type NEC – O35.09 (header)
  - placenta, placental (vessel) – O43.10- (header)
    - specified NEC – O43.19- (header)
  - uterus (congenital) – O34.0- (header)
- malnutrition (conditions in E40-E46) – O25.1- (header)
- maternal hypotension syndrome – O26.5- (header)
- mental disorders (conditions in F01-F09, F20-F52 and F54-F99) – O99.34- (header)
  - alcohol use – O99.31- (header)
  - drug use – O99.32- (header)
  - smoking – O99.33- (header)
- mentum presentation – O32.3 (header)
- metabolic disorders – O99.28- (header)
- missed
  - abortion – O02.1
  - delivery – O36.4 (header)
- multiple gestations – O30.9- (header)
  - conjoined twins – O30.02- (header)
  - specified number of multiples NEC – see Pregnancy, multiple (gestation), specified NEC
  - quadruplet – see Pregnancy, quadruplet
  - specified complication NEC – O31.8X- (header)
  - triplet – see Pregnancy, triplet
  - twin – see Pregnancy, twin
- musculoskeletal condition (conditions is M00-M99) – O99.891
- necrosis, liver (conditions in K72) – O26.61- (header)
- neoplasm
  - benign
    - cervix – O34.4- (header)
    - corpus uteri – O34.1- (header)
    - uterus – O34.1- (header)
  - malignant – O9A.11- (header)
- nephropathy NEC – O26.83- (header)
- nervous system condition (conditions in G00-G99) – O99.35- (header)
- nutritional diseases NEC – O99.28- (header)
- obesity (pre-existing) – O99.21- (header)
- obesity surgery status – O99.84- (header)
- oblique lie or presentation – O32.2 (header)
- older mother – see Pregnancy, complicated by, elderly
- oligohydramnios – O41.0- (header)
  - with premature rupture of membranes – O42.- (header) – see also Pregnancy, complicated by, premature rupture of membranes
- onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) – O75.82
- oophoritis – O23.52- (header)
- overdose, drug – O9A.21- (header) – see also Table of Drugs and Chemicals, by drug, poisoning
- oversize fetus – O33.5 (header)
- papyraceous fetus – O31.0- (header)
- pelvic inflammatory disease – O99.891
- periodontal disease – O99.61- (header)
- peripheral neuritis – O26.82- (header)
- peritoneal (pelvic) – O99.891
- phlebitis – O22.9- (header)
- phlebopathy – O22.9- (header)
- phlebothrombosis (superficial) – O22.2- (header)
  - deep – O22.3- (header)
- placenta accreta – O43.21- (header)
- placenta increta – O43.22- (header)
- placenta percreta – O43.23- (header)
- placenta previa – O44.0- (header)
  - complete – O44.0- (header)
    - with hemorrhage – O44.1- (header)
  - marginal – O44.2- (header)
    - with hemorrhage – O44.3- (header)
  - partial – O44.2- (header)
    - with hemorrhage – O44.3- (header)
- placental disorder – O43.9- (header)
  - specified NEC – O43.89- (header)
- placental dysfunction – O43.89- (header)
- placental infarction – O43.81- (header)
- placental insufficiency – O36.51- (header)
- placental transfusion syndromes
  - fetomaternal – O43.01- (header)
  - fetus to fetus – O43.02- (header)
  - maternofetal – O43.01- (header)
- placentitis – O41.14- (header)
- pneumonia – O99.51- (header)
- poisoning – O9A.21- (header) – see also Table of Drugs and Chemicals
- polyhydramnios – O40- (header)
- polymorphic eruption of pregnancy – O26.86
- poor obstetric history NEC – O09.29- (header)
- postmaturity (post-term) (40 to 42 weeks) – O48.0
  - more than 42 completed weeks gestation (prolonged) – O48.1
- pre-eclampsia – O14.9- (header)
  - mild – O14.0- (header)
  - moderate – O14.0- (header)
  - severe – O14.1- (header)
    - with hemolysis, elevated liver enzymes and low platelet count (HELLP) – O14.2- (header)
- premature labor – see Pregnancy, complicated by, preterm labor
- premature rupture of membranes – O42.90
  - full-term, unspecified as to length of time between rupture and onset of labor – O42.92
  - with onset of labor
    - within 24 hours – O42.00
      - at or after 37 weeks gestation, onset of labor within 24 hours of rupture – O42.02
      - pre-term (before 37 completed weeks of gestation) – O42.01- (header)
    - after 24 hours – O42.10
      - at or after 37 weeks gestation, onset of labor more than 24 hours following rupture – O42.12
      - pre-term (before 37 completed weeks of gestation) – O42.11- (header)
  - at or after 37 weeks gestation, unspecified as to length of time between rupture and onset of labor – O42.92
  - pre-term (before 37 completed weeks of gestation) – O42.91- (header)
- premature separation of placenta – O45.9- (header) – see also Abruptio placentae
- presentation, fetal – see Delivery, complicated by, malposition
- preterm delivery – O60.10 (header)
- preterm labor
  - with delivery – O60.10 (header)
    - preterm – O60.10 (header)
    - term – O60.20 (header)
  - second trimester
    - with term delivery – O60.22 (header)
    - without delivery – O60.02
    - with preterm delivery
      - second trimester – O60.12 (header)
      - third trimester – O60.13 (header)
  - third trimester
    - with term delivery – O60.23 (header)
    - without delivery – O60.03
    - with third trimester preterm delivery – O60.14 (header)
  - without delivery – O60.00
    - second trimester – O60.02
    - third trimester – O60.03
- previous history of – see Pregnancy, supervision of, high-risk
- prolapse, uterus – O34.52- (header)
- proteinuria (gestational) – O12.1- (header) – see also Proteinuria, gestational
  - with edema – O12.2- (header)
- pruritic urticarial papules and plaques of pregnancy (PUPPP) – O26.86
- pruritus (neurogenic) – O26.89- (header)
- psychosis or psychoneurosis (puerperal) – F53.1
- ptyalism – O26.89- (header)
- PUPPP (pruritic urticarial papules and plaques of pregnancy) – O26.86
- pyelitis – O23.0- (header)
- recurrent pregnancy loss – O26.2- (header)
- renal disease or failure NEC – O26.83- (header)
  - with secondary hypertension, pre-existing – see Hypertension, complicating, pregnancy, pre-existing, secondary
  - hypertensive, pre-existing – see Hypertension, complicating, pregnancy, pre-existing, with, renal disease
- respiratory condition (conditions in J00-J99) – O99.51- (header)
- retained, retention
  - dead ovum – O02.0
  - intrauterine contraceptive device – O26.3- (header)
- retroversion, uterus – O34.53- (header)
- Rh immunization, incompatibility or sensitization NEC – O36.09- (header)
  - anti-D antibody – O36.01- (header)
- rupture
  - amnion (premature) – O42- (header) – see also Pregnancy, complicated by, premature rupture of membranes
  - membranes (premature) – O42- (header) – see also Pregnancy, complicated by, premature rupture of membranes
  - uterus (during labor) – O71.1
    - before onset of labor – O71.0- (header)
- salivation (excessive) – O26.89- (header)
- salpingitis – O23.52- (header)
- salpingo-oophoritis – O23.52- (header)
- sepsis (conditions in A40, A41) – O98.81- (header)
- size date discrepancy (uterine) – O26.84- (header)
- skin condition (conditions in L00-L99) – O99.71- (header)
- smoking (tobacco) – O99.33- (header)
- social problem – O09.7- (header)
- specified condition NEC – O26.89- (header)
- spotting – O26.85- (header)
- streptococcus group B (GBS) – O99.820
- subluxation of symphysis (pubis) – O26.71- (header)
- syphilis (conditions in A50-A53) – O98.11- (header)
- threatened
  - abortion – O20.0
  - labor – O47.9
    - at or after 37 completed weeks of gestation – O47.1
    - before 37 completed weeks of gestation – O47.0- (header)
- thrombophlebitis (superficial) – O22.2- (header)
- thrombosis – O22.9- (header)
  - cerebral venous – O22.5- (header)
  - cerebrovenous sinus – O22.5- (header)
  - deep – O22.3- (header)
- tobacco use disorder (smoking) – O99.33- (header)
- torsion of uterus – O34.59- (header)
- toxemia – O14.9- (header)
- transverse lie or presentation – O32.2 (header)
- tuberculosis (conditions in A15-A19) – O98.01- (header)
- tumor (benign)
  - cervix – O34.4- (header)
  - malignant – O9A.11- (header)
  - uterus – O34.1- (header)
- unstable lie – O32.0 (header)
- upper respiratory infection – O99.51- (header)
- urethritis – O23.2- (header)
- uterine size date discrepancy – O26.84- (header)
- vaginitis or vulvitis – O23.59- (header)
- varicose veins (lower extremities) – O22.0- (header)
  - genitals – O22.1- (header)
  - legs – O22.0- (header)
  - perineal – O22.1- (header)
  - vaginal or vulval – O22.1- (header)
- venereal disease NEC (conditions in A63.8) – O98.31- (header)
- venous disorders – O22.9- (header)
  - specified NEC – O22.8X- (header)
- viral diseases (conditions in A80-B09, B25-B34) – O98.51- (header)
- very young mother – see Pregnancy, complicated by, young mother
- vomiting – O21.9
  - due to diseases classified elsewhere – O21.8
  - hyperemesis gravidarum (mild) – O21.0- – see also Hyperemesis, gravidarum
  - late (occurring after 20 weeks of gestation) – O21.2
- young mother
  - multigravida – O09.62- (header)
  - primigravida – O09.61- (header)
concealed – O09.3- (header)
continuing following
- elective fetal reduction of one or more fetus – O31.3- (header)
- intrauterine death of one or more fetus – O31.2- (header)
- spontaneous abortion of one or more fetus – O31.1- (header)
- vanishing twin syndrome of one fetus or more – O31.4- (header)
cornual – O00.51- (header)
- with intrauterine pregnancy – O00.52- (header)
ectopic (ruptured) – O00.90
- with intrauterine pregnancy – O00.91
- abdominal – O00.00
  - with
    - intrauterine pregnancy – O00.01
    - viable fetus – O36.7- (header)
- cervical – O00.41
  - with intrauterine pregnancy – O00.42
- Cesarean scar – O00.31
  - with intrauterine pregnancy – O00.32
- complicated (by) – O08.9
  - afibrinogenemia – O08.1
  - cardiac arrest – O08.81
  - chemical damage of pelvic organ (s) – O08.6
  - circulatory collapse – O08.3
  - defibrination syndrome – O08.1
  - electrolyte imbalance – O08.5
  - embolism (amniotic fluid) (blood clot) (pulmonary) (septic) – O08.2
  - endometritis – O08.0
  - genital tract and pelvic infection – O08.0
  - hemorrhage (delayed) (excessive) – O08.1
  - infection
    - genital tract or pelvic – O08.0
    - kidney 008.83
    - urinary tract – O08.83
  - intravascular coagulation – O08.1
  - laceration of pelvic organ (s) – O08.6
  - metabolic disorder – O08.5
  - oliguria – O08.4
  - oophoritis – O08.0
  - parametritis – O08.0
  - pelvic peritonitis – O08.0
  - perforation of pelvic organ (s) – O08.6
  - renal failure or shutdown – O08.4
  - salpingitis or salpingo-oophoritis – O08.0
  - sepsis – O08.82
  - shock – O08.83
    - septic – O08.82
  - specified condition NEC – O08.89
  - tubular necrosis (renal) – O08.4
  - uremia – O08.4
  - urinary infection – O08.83
  - venous complication NEC – O08.7
    - embolism – O08.2
- cornual – O00.51- (header)
  - with intrauterine pregnancy – O00.52- (header)
- intraligamentous – O00.80
  - with intrauterine pregnancy – O00.81
- interstitial – O00.12- (header)
  - with intrauterine pregnancy – O00.13- (header)
- mural – O00.80
  - with intrauterine pregnancy – O00.81
- ovarian – O00.20- (header)
  - with intrauterine pregnancy – O00.21- (header)
- specified site NEC – O00.80
  - with intrauterine pregnancy – O00.81
- tubal (ruptured) – O00.10- (header)
  - with intrauterine pregnancy – O00.11- (header)
examination (normal) – Z34.9- (header)
- high-risk – see Pregnancy, supervision of, high-risk
- first – Z34.0- (header)
- specified – Z34.8- (header)
extrauterine – see Pregnancy, ectopic
fallopian – O00.10- (header)
- with intrauterine pregnancy – O00.11- (header)
false – F45.8
gestational carrier – Z33.3
heptachorionic, hepta-amniotic (septuplets) – O30.83- (header)
hexachorionic, hexa-amniotic (sextuplets) – O30.83- (header)
hidden – O09.3- (header)
high-risk – see Pregnancy, supervision of, high-risk
incidental finding – Z33.1
interstitial – O00.12- (header)
- with intrauterine pregnancy – O00.13- (header)
intraligamentous – O00.80
- with intrauterine pregnancy – O00.81
intramural – O00.80
- with intrauterine pregnancy – O00.81
intraperitoneal – O00.00
- with intrauterine pregnancy – O00.01
isthmian – O00.10- (header)
- with intrauterine pregnancy – O00.11- (header)
mesometric (mural) – O00.80
- with intrauterine pregnancy – O00.81
molar NEC – O02.0
- complicated (by) – O08.9
  - afibrinogenemia – O08.1
  - cardiac arrest – O08.81
  - chemical damage of pelvic organ (s) – O08.6
  - circulatory collapse – O08.3
  - defibrination syndrome – O08.1
  - electrolyte imbalance – O08.5
  - embolism (amniotic fluid) (blood clot) (pulmonary) (septic) – O08.2
  - endometritis – O08.0
  - genital tract and pelvic infection – O08.0
  - hemorrhage (delayed) (excessive) – O08.1
  - infection
    - genital tract or pelvic – O08.0
    - kidney – O08.83
    - urinary tract – O08.83
  - intravascular coagulation – O08.1
  - laceration of pelvic organ (s) – O08.6
  - metabolic disorder – O08.5
  - oliguria – O08.4
  - oophoritis – O08.0
  - parametritis – O08.0
  - pelvic peritonitis – O08.0
  - perforation of pelvic organ (s) – O08.6
  - renal failure or shutdown – O08.4
  - salpingitis or salpingo-oophoritis – O08.0
  - sepsis – O08.82
  - shock – O08.3
    - septic – O08.82
  - specified condition NEC – O08.89
  - tubular necrosis (renal) – O08.4
  - uremia – O08.4
  - urinary infection – O08.83
  - venous complication NEC – O08.7
    - embolism – O08.2
- hydatidiform – O01.9- – see also Mole, hydatidiform
multiple (gestation) – O30.9- (header)
- greater than quadruplets – see Pregnancy, multiple (gestation), specified NEC
- specified NEC – O30.80- (header)
  - with
    - two or more monoamniotic fetuses – O30.82- (header)
    - two or more monochorionic fetuses – O30.81- (header)
  - number of chorions and amnions are both equal to the number of fetuses – O30.83- (header)
  - two or more monoamniotic fetuses – O30.82- (header)
  - two or more monochorionic fetuses – O30.81- (header)
  - unable to determine number of placenta and number of amniotic sacs – O30.89- (header)
  - unspecified number of placenta and unspecified number of amniotic sacs – O30.80- (header)
mural – O00.80
- with intrauterine pregnancy – O00.81
normal (supervision of) – Z34.9- (header)
- high-risk – see Pregnancy, supervision of, high-risk
- first – Z34.0- (header)
- specified – Z34.8- (header)
ovarian – O00.20- (header)
- with intrauterine pregnancy – O00.21- (header)
pentachorionic, penta-amniotic (quintuplets) – O30.83- (header)
postmature (40 to 42 weeks) – O48.0
- more than 42 weeks gestation – O48.1
post-term (40 to 42 weeks) – O48.0
prenatal care only – Z34.9- (header)
- high-risk – see Pregnancy, supervision of, high-risk
- first – Z34.0- (header)
- specified – Z34.8- (header)
prolonged (more than 42 weeks gestation) – O48.1
quadruplet – O30.20- (header)
- with
  - two or more monoamniotic fetuses – O30.22- (header)
  - two or more monochorionic fetuses – O30.21- (header)
- quadrachorionic/quadra-amniotic – O30.23- (header)
- two or more monoamniotic fetuses – O30.22- (header)
- two or more monochorionic fetuses – O30.21- (header)
- unable to determine number of placenta and number of amniotic sacs – O30.29- (header)
- unspecified number of placenta and unspecified number of amniotic sacs – O30.20- (header)
quintuplet – see Pregnancy, multiple (gestation), specified NEC
sextuplet – see Pregnancy, multiple (gestation), specified NEC
supervision of
- concealed pregnancy – O09.3- (header)
- elderly mother
  - multigravida – O09.52- (header)
  - primigravida – O09.51- (header)
- hidden pregnancy – O09.3- (header)
- high-risk – O09.9- (header)
  - due to (history of)
    - ectopic pregnancy – O09.1- (header)
    - elderly – see Pregnancy, supervision, elderly mother
    - grand multiparity – O09.4 (header)
    - infertility – O09.0- (header)
    - insufficient prenatal care – O09.3- (header)
    - in utero procedure during previous pregnancy – O09.82- (header)
    - in vitro fertilization – O09.81- (header)
    - molar pregnancy – O09.A- (header)
    - multiple previous pregnancies – O09.4- (header)
    - older mother – see Pregnancy, supervision of, elderly mother
    - poor reproductive or obstetric history NEC – O09.29- (header)
    - pre-term labor – O09.21- (header)
    - previous
      - neonatal death – O09.29- (header)
    - social problems – O09.7- (header)
    - specified NEC – O09.89- (header)
    - very young mother – see Pregnancy, supervision, young mother
  - resulting from in vitro fertilization – O09.81- (header)
- normal – Z34.9- (header)
  - first – Z34.0- (header)
  - specified NEC – Z34.8- (header)
- young mother
  - multigravida – O09.62- (header)
  - primigravida – O09.61- (header)
triplet – O30.10- (header)
- with
  - two or more monoamniotic fetuses – O30.12- (header)
  - two or more monochorionic fetuses – O30.11- (header)
- trichorionic/triamniotic – O30.13- (header)
- two or more monoamniotic fetuses – O30.12- (header)
- two or more monochorionic fetuses – O30.11- (header)
- unable to determine number of placenta and number of amniotic sacs – O30.19- (header)
- unspecified number of placenta and unspecified number of amniotic sacs – O30.10- (header)
tubal (with abortion) (with rupture) – O00.10- (header)
- with intrauterine pregnancy – O00.11- (header)
twin – O30.00- (header)
- conjoined – O30.02- (header)
- dichorionic/diamniotic (two placenta, two amniotic sacs) – O30.04- (header)
- monochorionic/diamniotic (one placenta, two amniotic sacs) – O30.03- (header)
- monochorionic/monoamniotic (one placenta, one amniotic sac) – O30.01- (header)
- unable to determine number of placenta and number of amniotic sacs – O30.09- (header)
- unspecified number of placenta and unspecified number of amniotic sacs – O30.00- (header)
unwanted – Z64.0
weeks of gestation
- 8 weeks – Z3A.08
- 9 weeks – Z3A.09
- 10 weeks – Z3A.10
- 11 weeks – Z3A.11
- 12 weeks – Z3A.12
- 13 weeks – Z3A.13
- 14 weeks – Z3A.14
- 15 weeks – Z3A.15
- 16 weeks – Z3A.16
- 17 weeks – Z3A.17
- 18 weeks – Z3A.18
- 19 weeks – Z3A.19
- 20 weeks – Z3A.20
- 21 weeks – Z3A.21
- 22 weeks – Z3A.22
- 23 weeks – Z3A.23
- 24 weeks – Z3A.24
- 25 weeks – Z3A.25
- 26 weeks – Z3A.26
- 27 weeks – Z3A.27
- 28 weeks – Z3A.28
- 29 weeks – Z3A.29
- 30 weeks – Z3A.30
- 31 weeks – Z3A.31
- 32 weeks – Z3A.32
- 33 weeks – Z3A.33
- 34 weeks – Z3A.34
- 35 weeks – Z3A.35
- 36 weeks – Z3A.36
- 37 weeks – Z3A.37
- 38 weeks – Z3A.38
- 39 weeks – Z3A.39
- 40 weeks – Z3A.40
- 41 weeks – Z3A.41
- 42 weeks – Z3A.42
- greater than 42 weeks – Z3A.49
- less than 8 weeks – Z3A.01
- not specified – Z3A.00

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.