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ICD-10-CM 2027 diagnosis code

O43.2Morbidly adherent placenta

Not billable — use a more specific code

O43.2 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

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 O43.2

O43.2 is the ICD-10-CM diagnosis code for Morbidly adherent placenta. It belongs to category O43 (placental disorders), block O30-O48 (maternal care related to the fetus and amniotic cavity and possible delivery problems) 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 O43 (placental disorders), O43.2 is specifically for Morbidly adherent placenta. Related codes cover placental transfusion syndromes (O43.0), malformation of placenta (O43.1), other placental disorders (O43.8) and unspecified placental disorder (O43.9).

To report this condition, pick the subcode that matches the documentation: O43.21 (accreta), O43.22 (increta) and O43.23 (percreta).

Don't report O43.2 together with the conditions in its Excludes1 note: retained placenta (O73.-).

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 O43.2

Coding notes

Excludes1Not coded here — never report together with this code
  • retained placenta (O73.-)
Code alsoTwo codes may be needed; sequencing depends on circumstances
  • associated third stage postpartum hemorrhage, if applicable (O72.0)

Notes that apply from higher levels

Instructions written at a parent level also apply to O43.2.

› From O43 Placental disorders
Excludes2
  • 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.-)

Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.

Codes whose notes reference O43.2

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about O43.2

Is O43.2 billable?

No. O43.2 is a header code. Report one of its more specific subcodes instead.