O29

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Complications of 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).

CH15 Parent Instructions

Excludes1(Not coded here)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here)
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
Use Additional Code
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

O20-O29 Parent Instructions

Excludes2(Not included here)
  • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
  • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)

Instructional Notes

Includes
  • maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy
Excludes2(Not included here)
  • complications of anesthesia during labor and delivery (O74.-)
  • complications of anesthesia during the puerperium (O89.-)
Use Additional Code
  • code, if necessary, to identify the complication

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
O29.1Cardiac complications of anesthesia during pregnancy
O29.2Central nervous system complications of anesthesia during pregnancy
O29.3Toxic reaction to local anesthesia during pregnancy
O29.4Spinal and epidural anesthesia induced headache during pregnancy
O29.5Other complications of spinal and epidural anesthesia during pregnancy
O29.6Failed or difficult intubation for anesthesia during pregnancy
O29.8Other complications of anesthesia during pregnancy
O29.9Unspecified complication of anesthesia during pregnancy

Applicable Ancestor Context

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

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. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Anoxia (pathological)1 unique routes
cerebral
complicating
anesthesia (general) (local) or other sedation
in pregnancy→O29
Arrest, arrested1 unique routes
cardiac
complicating
anesthesia (general) (local) or other sedation
in pregnancy→O29
Collapse1 unique routes
lung (massive)
pressure due to anesthesia (general) (local) or other sedation
in pregnancy→O29
Complication (s) (from) (of)5 unique routes
anesthesia, anesthetic(5 variants)
cardiac
in
pregnancy→O29
central nervous system
in
pregnancy→O29
difficult or failed intubation
in pregnancy→O29
pulmonary
in
pregnancy NEC→O29
spinal and epidural
in
pregnancy NEC→O29
Effect, adverse1 unique routes
anesthesia
local, toxic
in pregnancy NEC→O29
Failure, failed2 unique routes
heart (acute) (senile) (sudden)
complicating
anesthesia (general) (local) or other sedation
in pregnancy→O29
intubation during anesthesia
in pregnancy→O29
Headache1 unique routes
spinal and epidural anesthesia - induced
in pregnancy→O29
Inhalation1 unique routes
stomach contents or secretions
due to anesthesia (general) (local) or other sedation
in pregnancy→O29
Mendelson's syndrome (due to anesthesia)1 unique routes
in pregnancy→O29
Pneumonitis (acute) (primary)2 unique routes
aspiration
due to
anesthesia
during
pregnancy→O29
postanesthetic
in pregnancy→O29
Pregnancy (single) (uterine)9 unique routes
complicated by (care of) (management affected by)(9 variants)
adverse effect anesthesia→O29(9 variants)
aspiration pneumonitis→O29
cardiac arrest→O29
cardiac complication NEC→O29
cardiac failure→O29
central nervous system complication NEC→O29
cerebral anoxia→O29
failed or difficult intubation→O29
Mendelson's syndrome→O29

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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