ICD-10-CM 2027 diagnosis code
O34Maternal care for abnormality of pelvic organs
Not billable — use a more specific code
O34 is a header code, so it can't be reported by itself. Choose one of the 10 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 O34
O34 is the ICD-10-CM diagnosis code for maternal care for abnormality of pelvic organs. It belongs to 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 10 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: O34.0 (uterus), O34.1 (uteri), O34.2 (surgery), O34.3 (incompetence), O34.4 (cervix), O34.5 (uterus), O34.6 (vagina), O34.7 (perineum) and 2 more.
Code first: any associated obstructed labor (O65.5).
Use an additional code for specific condition.
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 O34
- O34.0Maternal care for congenital malformation of uterus
- O34.00Maternal care for unspecified congenital malformation of uterus, unspecified trimesterBillable
- O34.01Maternal care for unspecified congenital malformation of uterus, first trimesterBillable
- O34.02Maternal care for unspecified congenital malformation of uterus, second trimesterBillable
- O34.03Maternal care for unspecified congenital malformation of uterus, third trimesterBillable
- O34.1Maternal care for benign tumor of corpus uteri
- O34.10Maternal care for benign tumor of corpus uteri, unspecified trimesterBillable
- O34.11Maternal care for benign tumor of corpus uteri, first trimesterBillable
- O34.12Maternal care for benign tumor of corpus uteri, second trimesterBillable
- O34.13Maternal care for benign tumor of corpus uteri, third trimesterBillable
- O34.2Maternal care due to uterine scar from previous surgery
- O34.21Maternal care for scar from previous cesarean delivery
- O34.211Maternal care for low transverse scar from previous cesarean deliveryBillable
- O34.212Maternal care for vertical scar from previous cesarean deliveryBillable
- O34.218Maternal care for other type scar from previous cesarean deliveryBillable
- O34.219Maternal care for unspecified type scar from previous cesarean deliveryBillable
- O34.22Maternal care for cesarean scar defect (isthmocele)Billable
- O34.29Maternal care due to uterine scar from other previous surgeryBillable
- O34.21Maternal care for scar from previous cesarean delivery
- O34.3Maternal care for cervical incompetence
- O34.4Maternal care for other abnormalities of cervix
- O34.40Maternal care for other abnormalities of cervix, unspecified trimesterBillable
- O34.41Maternal care for other abnormalities of cervix, first trimesterBillable
- O34.42Maternal care for other abnormalities of cervix, second trimesterBillable
- O34.43Maternal care for other abnormalities of cervix, third trimesterBillable
- O34.5Maternal care for other abnormalities of gravid uterus
- O34.51Maternal care for incarceration of gravid uterus
- O34.511Maternal care for incarceration of gravid uterus, first trimesterBillable
- O34.512Maternal care for incarceration of gravid uterus, second trimesterBillable
- O34.513Maternal care for incarceration of gravid uterus, third trimesterBillable
- O34.519Maternal care for incarceration of gravid uterus, unspecified trimesterBillable
- O34.52Maternal care for prolapse of gravid uterus
- O34.521Maternal care for prolapse of gravid uterus, first trimesterBillable
- O34.522Maternal care for prolapse of gravid uterus, second trimesterBillable
- O34.523Maternal care for prolapse of gravid uterus, third trimesterBillable
- O34.529Maternal care for prolapse of gravid uterus, unspecified trimesterBillable
- O34.53Maternal care for retroversion of gravid uterus
- O34.531Maternal care for retroversion of gravid uterus, first trimesterBillable
- O34.532Maternal care for retroversion of gravid uterus, second trimesterBillable
- O34.533Maternal care for retroversion of gravid uterus, third trimesterBillable
- O34.539Maternal care for retroversion of gravid uterus, unspecified trimesterBillable
- O34.59Maternal care for other abnormalities of gravid uterus
- O34.591Maternal care for other abnormalities of gravid uterus, first trimesterBillable
- O34.592Maternal care for other abnormalities of gravid uterus, second trimesterBillable
- O34.593Maternal care for other abnormalities of gravid uterus, third trimesterBillable
- O34.599Maternal care for other abnormalities of gravid uterus, unspecified trimesterBillable
- O34.51Maternal care for incarceration of gravid uterus
- O34.6Maternal care for abnormality of vagina
- O34.7Maternal care for abnormality of vulva and perineum
- O34.70Maternal care for abnormality of vulva and perineum, unspecified trimesterBillable
- O34.71Maternal care for abnormality of vulva and perineum, first trimesterBillable
- O34.72Maternal care for abnormality of vulva and perineum, second trimesterBillable
- O34.73Maternal care for abnormality of vulva and perineum, third trimesterBillable
- O34.8Maternal care for other abnormalities of pelvic organs
- O34.80Maternal care for other abnormalities of pelvic organs, unspecified trimesterBillable
- O34.81Maternal care for other abnormalities of pelvic organs, first trimesterBillable
- O34.82Maternal care for other abnormalities of pelvic organs, second trimesterBillable
- O34.83Maternal care for other abnormalities of pelvic organs, third trimesterBillable
- O34.9Maternal care for abnormality of pelvic organ, unspecified
- O34.90Maternal care for abnormality of pelvic organ, unspecified, unspecified trimesterBillable
- O34.91Maternal care for abnormality of pelvic organ, unspecified, first trimesterBillable
- O34.92Maternal care for abnormality of pelvic organ, unspecified, second trimesterBillable
- O34.93Maternal care for abnormality of pelvic organ, unspecified, third trimesterBillable
Coding notes
IncludesFurther defines the content of the category
- the listed conditions as a reason for hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor
Code firstSequence the underlying condition first
- any associated obstructed labor (O65.5)
Use additional codeAdd a secondary code to fully describe the condition
- code for specific condition
Notes that apply from higher levels
Instructions written at a parent level also apply to O34.
Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.
Codes whose notes reference O34
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 O34
Is O34 billable?
- No. O34 is a header code. Report one of its more specific subcodes instead.