ICD-10-CM 2027 diagnosis code
O9A.2Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium
O9A.2 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.Short description: Inj/poisn/oth conseq of external causes compl preg/chldbrth
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About O9A.2
O9A.2 is the ICD-10-CM diagnosis code for injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium. It belongs to category O9A (maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium), block O94-O9A (other obstetric conditions, not elsewhere classified) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within O9A, choose O9A.2 (Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium) only when documentation doesn't support a more specific option: malignant neoplasm complicating pregnancy, childbirth and the puerperium (O9A.1), physical abuse complicating pregnancy, childbirth and the puerperium (O9A.3), sexual abuse complicating pregnancy, childbirth and the puerperium (O9A.4) and psychological abuse complicating pregnancy, childbirth and the puerperium (O9A.5).
To report this condition, pick the subcode that matches the documentation: O9A.21 (pregnancy), O9A.22 (childbirth) and O9A.23 (puerperium).
The conditions in its Excludes2 note aren't part of O9A.2, but may be coded alongside it if the patient has both: physical, sexual and psychological abuse complicating pregnancy, childbirth and the puerperium (O9A.3-, O9A.4-, O9A.5-).
Use an additional code(s) to identify the injury or poisoning.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under O9A.2
- O9A.21Injury, poisoning and certain other consequences of external causes complicating pregnancy
- O9A.211Injury, poisoning and certain other consequences of external causes complicating pregnancy, first trimesterBillable
- O9A.212Injury, poisoning and certain other consequences of external causes complicating pregnancy, second trimesterBillable
- O9A.213Injury, poisoning and certain other consequences of external causes complicating pregnancy, third trimesterBillable
- O9A.219Injury, poisoning and certain other consequences of external causes complicating pregnancy, unspecified trimesterBillable
- O9A.22Injury, poisoning and certain other consequences of external causes complicating childbirthBillable
- O9A.23Injury, poisoning and certain other consequences of external causes complicating the puerperiumBillable
Coding notes
- code(s) to identify the injury or poisoning
Notes that apply from higher levels
Instructions written at a parent level also apply to O9A.2.
Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.
Codes whose notes reference O9A.2
- O99.8Excludes2
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about O9A.2
Is O9A.2 billable?
- No. O9A.2 is a header code. Report one of its more specific subcodes instead.