O29.9
Unspecified complication of anesthesia during pregnancy
O29.9 is a non-billable ICD-10-CM code header for unspecified complication of anesthesia during pregnancy. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are O29.90 Unspecified complication of anesthesia during pregnancy, unspecified trimester; O29.91 Unspecified complication of anesthesia during pregnancy, first trimester; O29.92 Unspecified complication of anesthesia during pregnancy, second trimester and O29.93 Unspecified complication of anesthesia during pregnancy, third trimester. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 8 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
The trimester character comes from the provider's documentation for the current encounter. The unspecified trimester code should rarely be used.
Use additional code
Add the listed code as a secondary code, if known.
- code, if necessary, to identify the complication
Also from chapter/block level (1 note)
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Also from chapter/block level (1 note)
- supervision of normal pregnancy (Z34.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (6 notes)
- 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)
Includes
Further defines or gives examples of the content of the category.
- maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy
Notes
Also from chapter/block level (6 notes)
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry
More specific codes under O29.9 4
- O29.90Unspecified complication of anesthesia during pregnancy, unspecified trimesterBillable
- O29.91Unspecified complication of anesthesia during pregnancy, first trimesterBillable
- O29.92Unspecified complication of anesthesia during pregnancy, second trimesterBillable
- O29.93Unspecified complication of anesthesia during pregnancy, third trimesterBillable