O74.0
Aspiration pneumonitis due to anesthesia during labor and delivery
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
Inhalation of stomach contents or secretions NOS due to anesthesia during labor and delivery Mendelson's syndrome due to anesthesia during labor and delivery
maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during labor and delivery
code, if applicable, to identify specific complication
supervision of normal pregnancy (Z34.-)
mental and behavioral disorders associated with the puerperium (F53.-) obstetrical tetanus (A34) postpartum necrosis of pituitary gland (E23.0) puerperal osteomalacia (M83.0)
code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes) Trimesters are counted from the first day of the last menstrual period. They are defined as follows: 1st trimester- less than 14 weeks 0 days 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days 3rd trimester- 28 weeks 0 days until delivery
Official Guidelines for O74.0
FY 2026 ›Subsections
- I.C.15.aGeneral Rules for Obstetric Cases
- I.C.15.bSelection of OB Principal or First-listed Diagnosis
- I.C.15.cPre-existing conditions versus conditions due to the pregnancy
- I.C.15.dPre-existing hypertension in pregnancy
- I.C.15.eFetal Conditions Affecting the Management of the Mother
- I.C.15.fHIV Infection in Pregnancy, Childbirth and the Puerperium
- I.C.15.gDiabetes mellitus in pregnancy
- I.C.15.hLong term use of insulin and oral hypoglycemics
- I.C.15.iGestational (pregnancy induced) diabetes
- I.C.15.jSepsis and septic shock complicating abortion, pregnancy, childbirth and the puerperium
- I.C.15.kPuerperal sepsis
- I.C.15.lAlcohol, tobacco and drug use during pregnancy, childbirth and the puerperium
- I.C.15.mPoisoning, toxic effects, adverse effects and underdosing in a pregnant patient
- I.C.15.nNormal Delivery, Code O80
- I.C.15.oThe Peripartum and Postpartum Periods
- I.C.15.pCode O94, Sequelae of complication of pregnancy, childbirth, and the puerperium
- I.C.15.qTermination of Pregnancy and Spontaneous abortions
- I.C.15.rAbuse in a pregnant patient
- I.C.15.sCOVID-19 infection in pregnancy, childbirth, and the puerperium
Sections that reference O74.0
Sections whose FY 2026 text names O74.0, its O74 category, or a range containing it — the chapter guidance above is the authoritative source.
Find O74.0 in the alphabetic index
10 index paths lead to this code
- Mendelson's syndrome › in labor and delivery
- Mendelson's syndrome › obstetric
- Syndrome › acid pulmonary aspiration, obstetric
- Syndrome › Mendelson's
- Pneumonitis › aspiration › obstetric
- Pneumonitis › postanesthetic › in labor and delivery
- Pneumonitis › postanesthetic › obstetric
- Pneumonitis › postoperative › obstetric
- Inhalation › stomach contents or secretions › due to anesthesia or other sedation › in labor and delivery
- Pneumonitis › aspiration › due to › anesthesia › during › labor and delivery