O9A.21 – Injury, poisoning and certain other consequences of external causes complicating pregnancy

ICD-10-CM 2027 diagnosis code · Other obstetric conditions, not elsewhere classified

Non-billable header

ICD-10-CM code O9A.21

Code: O9A.21 (claims format: O9A21)
Description: Injury, poisoning and certain other consequences of external causes complicating pregnancy
Short description: Inj/poisn/oth conseq of external causes comp pregnancy
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O94-O9A Other obstetric conditions, not elsewhere classified
Parent codes: O9A › O9A.2

Billable codes under O9A.21

O9A.21 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

O9A.2 – Injury, poisoning and certain other consequences of external causes complicating pregnancy, childbirth and the puerperium

Applicable to:

Conditions in S00-T88, except T74 and T76

Excludes2 (not included here):

physical, sexual and psychological abuse complicating pregnancy, childbirth and the puerperium (O9A.3-, O9A.4-, O9A.5-)

Use additional code:

code(s) to identify the injury or poisoning

Index terms for O9A.21

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in O9A.2

Frequently asked questions

What is ICD-10 code O9A.21?

O9A.21 is the ICD-10-CM code for injury, poisoning and certain other consequences of external causes complicating pregnancy, in the block O94-O9A (Other obstetric conditions, not elsewhere classified).

Is O9A.21 a billable code?

No. O9A.21 is a header code with more specific child codes; report one of the billable codes listed above.

What category does O9A.21 belong to?

It belongs to category O9A – Maternal malignant neoplasms, traumatic injuries and abuse classifiable elsewhere but complicating pregnancy, childbirth and the puerperium.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.