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ICD-10-CM 2027

ICD-10 code for placenta cyst

O43.19

Other malformation of placenta

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › placenta”. Page updated September 29, 2026.

About coding placenta cyst

The ICD-10-CM code for placenta cyst is O43.19 (Other malformation of placenta).

Within O43.1, choose O43.19 (Other malformation of placenta) only when documentation doesn't support a more specific option: unspecified (O43.10), Circumvallate placenta (O43.11) and Velamentous insertion of umbilical cord (O43.12).

To report this condition, pick the subcode that matches the documentation: O43.191 (first trimester), O43.192 (second trimester), O43.193 (third trimester) and O43.199 (unspecified trimester).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about placenta cyst ICD-10 codes

What is the ICD-10 code for placenta cyst?

O43.19 — Other malformation of placenta (a header code; report a more specific subcode).

Is O43.19 billable?

No. O43.19 is a header code. Report one of its more specific subcodes instead.