O43.109 – Malformation of placenta, unspecified, unspecified trimester

ICD-10-CM 2027 diagnosis code · Maternal care related to the fetus and amniotic cavity and possible delivery problems

Billable code

ICD-10-CM code O43.109

Code: O43.109 (claims format: O43109)
Description: Malformation of placenta, unspecified, unspecified trimester
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems
Parent codes: O43 › O43.1 › O43.10

Notes inherited from parent codes

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

O43 – Placental disorders

Excludes2 (not included here):

maternal care for poor fetal growth due to placental insufficiency (O36.5-)
placenta previa (O44.-)
placental polyp (O90.89)
placentitis (O41.14-)
premature separation of placenta [abruptio placentae] (O45.-)

O43.10 – Malformation of placenta, unspecified

Applicable to:

Abnormal placenta NOS

Related codes in O43.10

Frequently asked questions

What is ICD-10 code O43.109?

O43.109 is the ICD-10-CM code for malformation of placenta, unspecified, unspecified trimester, in the block O30-O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems).

Is O43.109 a billable code?

Yes. O43.109 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does O43.109 belong to?

It belongs to category O43 – Placental disorders.

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.