DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O29 Complications of anesthesia during pregnancy

  • Header · not billable

O29 is not billable. The category heads 56 billable codes in FY2027, grouped under 9 subdivisions.

Index → code

  • Mendelson's syndrome (due to anesthesia)in pregnancy → O29.01-
  • Reactiontoxic, to local anesthesiain pregnancy → O29.3X-
  • Failure, failedintubation during anesthesiain pregnancy → O29.6-

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O20-O29 Other maternal disorders predominantly related to pregnancy (O20-O29)
  3. O29 Complications of anesthesia during pregnancy
Billable codes
56
Subdivisions
9
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
34

Codes in O29

  1. O29.0
    Pulmonary complications of anesthesia during pregnancy
    Header
  2. O29.01
    Aspiration pneumonitis due to anesthesia during pregnancy
    Header
    Inclusion terms 2

    Inclusion terms

    • Inhalation of stomach contents or secretions NOS due to anesthesia during pregnancy
    • Mendelson's syndrome due to anesthesia during pregnancy
  3. O29.011
    Aspiration pneumonitis due to anesthesia during pregnancy, first trimester
    Billable
  4. O29.012
    Aspiration pneumonitis due to anesthesia during pregnancy, second trimester
    Billable
  5. O29.013
    Aspiration pneumonitis due to anesthesia during pregnancy, third trimester
    Billable
  6. O29.019
    Aspiration pneumonitis due to anesthesia during pregnancy, unspecified trimester
    Billable
  7. O29.02
    Pressure collapse of lung due to anesthesia during pregnancy
    Header
  8. O29.021
    Pressure collapse of lung due to anesthesia during pregnancy, first trimester
    Billable
  9. O29.022
    Pressure collapse of lung due to anesthesia during pregnancy, second trimester
    Billable
  10. O29.023
    Pressure collapse of lung due to anesthesia during pregnancy, third trimester
    Billable
  11. O29.029
    Pressure collapse of lung due to anesthesia during pregnancy, unspecified trimester
    Billable
  12. O29.09
    Other pulmonary complications of anesthesia during pregnancy
    Header
  13. O29.091
    Other pulmonary complications of anesthesia during pregnancy, first trimester
    Billable
  14. O29.092
    Other pulmonary complications of anesthesia during pregnancy, second trimester
    Billable
  15. O29.093
    Other pulmonary complications of anesthesia during pregnancy, third trimester
    Billable
  16. O29.099
    Other pulmonary complications of anesthesia during pregnancy, unspecified trimester
    Billable
  17. O29.1
    Cardiac complications of anesthesia during pregnancy
    Header
  18. O29.11
    Cardiac arrest due to anesthesia during pregnancy
    Header
  19. O29.111
    Cardiac arrest due to anesthesia during pregnancy, first trimester
    Billable
  20. O29.112
    Cardiac arrest due to anesthesia during pregnancy, second trimester
    Billable
  21. O29.113
    Cardiac arrest due to anesthesia during pregnancy, third trimester
    Billable
  22. O29.119
    Cardiac arrest due to anesthesia during pregnancy, unspecified trimester
    Billable
  23. O29.12
    Cardiac failure due to anesthesia during pregnancy
    Header
  24. O29.121
    Cardiac failure due to anesthesia during pregnancy, first trimester
    Billable
  25. O29.122
    Cardiac failure due to anesthesia during pregnancy, second trimester
    Billable
  26. O29.123
    Cardiac failure due to anesthesia during pregnancy, third trimester
    Billable
  27. O29.129
    Cardiac failure due to anesthesia during pregnancy, unspecified trimester
    Billable
  28. O29.19
    Other cardiac complications of anesthesia during pregnancy
    Header
  29. O29.191
    Other cardiac complications of anesthesia during pregnancy, first trimester
    Billable
  30. O29.192
    Other cardiac complications of anesthesia during pregnancy, second trimester
    Billable
  31. O29.193
    Other cardiac complications of anesthesia during pregnancy, third trimester
    Billable
  32. O29.199
    Other cardiac complications of anesthesia during pregnancy, unspecified trimester
    Billable
  33. O29.2
    Central nervous system complications of anesthesia during pregnancy
    Header
  34. O29.21
    Cerebral anoxia due to anesthesia during pregnancy
    Header
  35. O29.211
    Cerebral anoxia due to anesthesia during pregnancy, first trimester
    Billable
  36. O29.212
    Cerebral anoxia due to anesthesia during pregnancy, second trimester
    Billable
  37. O29.213
    Cerebral anoxia due to anesthesia during pregnancy, third trimester
    Billable
  38. O29.219
    Cerebral anoxia due to anesthesia during pregnancy, unspecified trimester
    Billable
  39. O29.29
    Other central nervous system complications of anesthesia during pregnancy
    Header
  40. O29.291
    Other central nervous system complications of anesthesia during pregnancy, first trimester
    Billable
  41. O29.292
    Other central nervous system complications of anesthesia during pregnancy, second trimester
    Billable
  42. O29.293
    Other central nervous system complications of anesthesia during pregnancy, third trimester
    Billable
  43. O29.299
    Other central nervous system complications of anesthesia during pregnancy, unspecified trimester
    Billable
  44. O29.3
    Toxic reaction to local anesthesia during pregnancy
    Header
  45. O29.3X
    Toxic reaction to local anesthesia during pregnancy
    Header
  46. O29.3X1
    Toxic reaction to local anesthesia during pregnancy, first trimester
    Billable
  47. O29.3X2
    Toxic reaction to local anesthesia during pregnancy, second trimester
    Billable
  48. O29.3X3
    Toxic reaction to local anesthesia during pregnancy, third trimester
    Billable
  49. O29.3X9
    Toxic reaction to local anesthesia during pregnancy, unspecified trimester
    Billable
  50. O29.4
    Spinal and epidural anesthesia induced headache during pregnancy
    Header
  51. O29.40
    Spinal and epidural anesthesia induced headache during pregnancy, unspecified trimester
    Billable
  52. O29.41
    Spinal and epidural anesthesia induced headache during pregnancy, first trimester
    Billable
  53. O29.42
    Spinal and epidural anesthesia induced headache during pregnancy, second trimester
    Billable
  54. O29.43
    Spinal and epidural anesthesia induced headache during pregnancy, third trimester
    Billable
  55. O29.5
    Other complications of spinal and epidural anesthesia during pregnancy
    Header
  56. O29.5X
    Other complications of spinal and epidural anesthesia during pregnancy
    Header
  57. O29.5X1
    Other complications of spinal and epidural anesthesia during pregnancy, first trimester
    Billable
  58. O29.5X2
    Other complications of spinal and epidural anesthesia during pregnancy, second trimester
    Billable
  59. O29.5X3
    Other complications of spinal and epidural anesthesia during pregnancy, third trimester
    Billable
  60. O29.5X9
    Other complications of spinal and epidural anesthesia during pregnancy, unspecified trimester
    Billable
  61. O29.6
    Failed or difficult intubation for anesthesia during pregnancy
    Header
  62. O29.60
    Failed or difficult intubation for anesthesia during pregnancy, unspecified trimester
    Billable
  63. O29.61
    Failed or difficult intubation for anesthesia during pregnancy, first trimester
    Billable
  64. O29.62
    Failed or difficult intubation for anesthesia during pregnancy, second trimester
    Billable
  65. O29.63
    Failed or difficult intubation for anesthesia during pregnancy, third trimester
    Billable
  66. O29.8
    Other complications of anesthesia during pregnancy
    Header
  67. O29.8X
    Other complications of anesthesia during pregnancy
    Header
  68. O29.8X1
    Other complications of anesthesia during pregnancy, first trimester
    Billable
  69. O29.8X2
    Other complications of anesthesia during pregnancy, second trimester
    Billable
  70. O29.8X3
    Other complications of anesthesia during pregnancy, third trimester
    Billable
  71. O29.8X9
    Other complications of anesthesia during pregnancy, unspecified trimester
    Billable
  72. O29.9
    Unspecified complication of anesthesia during pregnancy
    Header
  73. O29.90
    Unspecified complication of anesthesia during pregnancy, unspecified trimester
    Billable
  74. O29.91
    Unspecified complication of anesthesia during pregnancy, first trimester
    Billable
  75. O29.92
    Unspecified complication of anesthesia during pregnancy, second trimester
    Billable
  76. O29.93
    Unspecified complication of anesthesia during pregnancy, third trimester
    Billable

Sources of each column.

Instructions

At O29

Includes

  • maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy

Excludes2

  • complications of anesthesia during labor and delivery (O74.-) O74
  • complications of anesthesia during the puerperium (O89.-) O89

Use additional code

  • code, if necessary, to identify the complication

Notes that also apply

Block O20-O29 instructions (Excludes2 2): printed on the block page.

Chapter 15 instructions (Notes 6, Excludes1 1, Excludes2 4, Use additional code 1): printed on the chapter 15 page.

Index entries

  • Mendelson's syndrome (due to anesthesia)in pregnancy → O29.01-
  • Pneumonitis (acute) (primary)postanestheticin pregnancy → O29.01-
  • Reactiontoxic, to local anesthesiain pregnancy → O29.3X-
  • Headachespinal and epidural anesthesia - inducedin pregnancy → O29.4-
  • Failure, failedintubation during anesthesiain pregnancy → O29.6-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)failed or difficult intubation for anesthesia → O29.6-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesia → O29.9-
  • Inhalationstomach contents or secretionsdue to anesthesia (general) (local) or other sedationin pregnancy → O29.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiaaspiration pneumonitis → O29.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiainhalation of stomach contents or secretions NOS → O29.01-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiaMendelson's syndrome → O29.01-
  • Collapselung (massive)pressure due to anesthesia (general) (local) or other sedationin pregnancy → O29.02-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiapressure collapse of lung → O29.02-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiapulmonary complications NEC → O29.09-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiacardiac arrest → O29.11-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiacardiac failure → O29.12-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiacardiac complication NEC → O29.19-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiacerebral anoxia → O29.21-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiacentral nervous system complication NEC → O29.29-
  • Effect, adverseanesthesialocal, toxicin pregnancy NEC → O29.3-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesialocal, toxic reaction → O29.3X
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiaspinal and epidural type NEC → O29.5X
  • Complication(s) (from) (of)anesthesia, anestheticdifficult or failed intubationin pregnancy → O29.6-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiafailed or difficult intubation → O29.6-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiaspecified NEC → O29.8X-
  • Complication(s) (from) (of)anesthesia, anestheticpulmonaryinpregnancy NEC → O29.09-
  • Arrest, arrestedcardiaccomplicatinganesthesia (general) (local) or other sedationin pregnancy → O29.11-
  • Failure, failedheart (acute) (senile) (sudden)complicatinganesthesia (general) (local) or other sedationin pregnancy → O29.12-
  • Complication(s) (from) (of)anesthesia, anestheticcardiacinpregnancy → O29.19-
  • Anoxia (pathological)cerebralcomplicatinganesthesia (general) (local) or other sedationin pregnancy → O29.21-
  • Complication(s) (from) (of)anesthesia, anestheticcentral nervous systeminpregnancy → O29.29-
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)adverse effect anesthesiaspinal and epidural type NECinduced headache → O29.4-
  • Complication(s) (from) (of)anesthesia, anestheticspinal and epiduralinpregnancy NEC → O29.5X-
  • Pneumonitis (acute) (primary)aspirationdue toanesthesiaduringpregnancy → O29.01-

NCHS Alphabetic Index. Index first, then the Tabular List.

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