O29.01

Non-Billable

ChapterO00–O9A

Ranksubcategory

Official Description

Aspiration pneumonitis due to anesthesia during pregnancy

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

Instructional Notes

Includes

Inhalation of stomach contents or secretions NOS due to anesthesia during pregnancy
Mendelson's syndrome due to anesthesia during pregnancy

General instructions are available for the parent sections:

View CH15 Notes View O20-O29 Notes View O29 Notes

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)

O20-O29Other maternal disorders predominantly related to pregnancy (O20-O29)

O29Complications of anesthesia during pregnancy

O29.0Pulmonary complications of anesthesia during pregnancy

O29.01Aspiration pneumonitis due to anesthesia during pregnancy

O29.011Aspiration pneumonitis due to anesthesia during pregnancy, first trimester

O29.012Aspiration pneumonitis due to anesthesia during pregnancy, second trimester

O29.013Aspiration pneumonitis due to anesthesia during pregnancy, third trimester

O29.019Aspiration pneumonitis due to anesthesia during pregnancy, unspecified trimester

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O29.01:

categoryO29

Complications of anesthesia during pregnancy

View context instructions

blockO20-O29

Other maternal disorders predominantly related to pregnancy (O20-O29)

View context instructions

chapterCH15

Pregnancy, childbirth and the puerperium (O00-O9A)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O29.01. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

7 raw paths

Inhalation1 unique routes

stomach contents or secretions

due to anesthesia (general) (local) or other sedation

in pregnancy→O29.01

Mendelson's syndrome (due to anesthesia)1 unique routes

in pregnancy→O29.01

Pneumonitis (acute) (primary)2 unique routes

due to

Pregnancy (single) (uterine)3 unique routes

complicated by (care of) (management affected by)(3 variants)

adverse effect anesthesia(3 variants)

aspiration pneumonitis→O29.01

inhalation of stomach contents or secretions NOS→O29.01

Mendelson's syndrome→O29.01

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Aspiration pneumonitis due to anesthesia during pregnancy.

Search PCS Codes