O74.0 — Aspiration pneumonitis due to anesthesia during labor and delivery
O74.0 is a billable, specific ICD-10-CM code for aspiration pneumonitis due to anesthesia during labor and delivery. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Inhalation of stomach contents or secretions NOS due to anesthesia during labor and delivery
- Mendelson's syndrome due to anesthesia during labor and delivery
Other codes that can never be billed with O74.0
These codes carry an Excludes1 note pointing at O74.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O74.0 alone.
Risk adjustment
O74.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
O74.0 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
- A57224Billing and Coding: Respiratory Care
How O74.0 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to O74.0.
- 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
Related codes at this level
Codes that share O74. If O74.0 is not quite right, the correct code is usually one of these.
- O74.1Other pulmonary complications of anesthesia during labor and delivery
- O74.2Cardiac complications of anesthesia during labor and delivery
- O74.3Central nervous system complications of anesthesia during labor and delivery
- O74.4Toxic reaction to local anesthesia during labor and delivery
- O74.5Spinal and epidural anesthesia-induced headache during labor and delivery
- O74.6Other complications of spinal and epidural anesthesia during labor and delivery
- O74.7Failed or difficult intubation for anesthesia during labor and delivery
- O74.8Other complications of anesthesia during labor and delivery
- O74.9Complication of anesthesia during labor and delivery, unspecified
Questions about O74.0
- Is O74.0 a billable ICD-10-CM code?
- Yes. O74.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does O74.0 sit in the tabular list?
- Pregnancy, childbirth and the puerperium (O00-O9A), in the block Complications of labor and delivery (O60-O77).