ICD-10-CM 2027
ICD-10 code for obstetric mendelson's syndrome
Aspiration pneumonitis due to anesthesia during labor and delivery
From the official ICD-10-CM alphabetic index entry “Mendelson's syndrome (due to anesthesia) › obstetric”. Page updated September 29, 2026.
About coding obstetric mendelson's syndrome
The ICD-10-CM code for obstetric mendelson's syndrome is O74.0 (Aspiration pneumonitis due to anesthesia during labor and delivery).
Within O74 (complications of anesthesia during labor and delivery), O74.0 is specifically for aspiration pneumonitis due to anesthesia during labor and delivery. Related codes cover other pulmonary complications of anesthesia during labor and delivery (O74.1), cardiac complications of anesthesia during labor and delivery (O74.2), central nervous system complications of anesthesia during labor and delivery (O74.3), toxic reaction to local anesthesia during labor and delivery (O74.4), spinal and epidural anesthesia-induced headache during labor and delivery (O74.5), other complications of spinal and epidural anesthesia during labor and delivery (O74.6), failed or difficult intubation for anesthesia during labor and delivery (O74.7), other complications of anesthesia during labor and delivery (O74.8) and 1 more.
Use an additional code, if applicable, to identify specific complication.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Common questions about obstetric mendelson's syndrome ICD-10 codes
What is the ICD-10 code for obstetric mendelson's syndrome?
- O74.0 — Aspiration pneumonitis due to anesthesia during labor and delivery.
Is O74.0 billable?
- Yes. O74.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can O74.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict O74.0 as a principal diagnosis.
Is O74.0 a CC or MCC?
- No. O74.0 is neither a CC nor an MCC under MS-DRG v44.0.