ICD-10-CM Tabular Index · Chapter 15 · FY 2027 O34

Maternal care for abnormality of pelvic organs (O34) ICD-10-CM

The O34 code range covers maternal care for abnormality of pelvic organs with 70 ICD-10-CM diagnosis codes. 54 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
70
Diagnosis Codes
54
Billable Codes
O34
Code Range
O30–O48
Parent Section

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Use Additional Code

The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

ICD-10-CM

Codes in the O34 Range 70 codes · 54 billable

70 of 70 shown
  • O34 Maternal care for abnormality of pelvic organsNon-billable
  • O34.0 Maternal care for congenital malformation of uterusNon-billable
  • O34.00 Maternal care for unspecified congenital malformation of uterus, unspecified trimester
  • O34.01 Maternal care for unspecified congenital malformation of uterus, first trimester
  • O34.02 Maternal care for unspecified congenital malformation of uterus, second trimester
  • O34.03 Maternal care for unspecified congenital malformation of uterus, third trimester
  • O34.1 Maternal care for benign tumor of corpus uteriNon-billable
  • O34.10 Maternal care for benign tumor of corpus uteri, unspecified trimester
  • O34.11 Maternal care for benign tumor of corpus uteri, first trimester
  • O34.12 Maternal care for benign tumor of corpus uteri, second trimester
  • O34.13 Maternal care for benign tumor of corpus uteri, third trimester
  • O34.2 Maternal care due to uterine scar from previous surgeryNon-billable
  • O34.21 Maternal care for scar from previous cesarean deliveryNon-billable
  • O34.211 Maternal care for low transverse scar from previous cesarean delivery
  • O34.212 Maternal care for vertical scar from previous cesarean delivery
  • O34.218 Maternal care for other type scar from previous cesarean delivery
  • O34.219 Maternal care for unspecified type scar from previous cesarean delivery
  • O34.22 Maternal care for cesarean scar defect (isthmocele)
  • O34.29 Maternal care due to uterine scar from other previous surgery
  • O34.3 Maternal care for cervical incompetenceNon-billable
  • O34.30 Maternal care for cervical incompetence, unspecified trimester
  • O34.31 Maternal care for cervical incompetence, first trimester
  • O34.32 Maternal care for cervical incompetence, second trimester
  • O34.33 Maternal care for cervical incompetence, third trimester
  • O34.4 Maternal care for other abnormalities of cervixNon-billable
  • O34.40 Maternal care for other abnormalities of cervix, unspecified trimester
  • O34.41 Maternal care for other abnormalities of cervix, first trimester
  • O34.42 Maternal care for other abnormalities of cervix, second trimester
  • O34.43 Maternal care for other abnormalities of cervix, third trimester
  • O34.5 Maternal care for other abnormalities of gravid uterusNon-billable
  • O34.51 Maternal care for incarceration of gravid uterusNon-billable
  • O34.511 Maternal care for incarceration of gravid uterus, first trimester
  • O34.512 Maternal care for incarceration of gravid uterus, second trimester
  • O34.513 Maternal care for incarceration of gravid uterus, third trimester
  • O34.519 Maternal care for incarceration of gravid uterus, unspecified trimester
  • O34.52 Maternal care for prolapse of gravid uterusNon-billable
  • O34.521 Maternal care for prolapse of gravid uterus, first trimester
  • O34.522 Maternal care for prolapse of gravid uterus, second trimester
  • O34.523 Maternal care for prolapse of gravid uterus, third trimester
  • O34.529 Maternal care for prolapse of gravid uterus, unspecified trimester
  • O34.53 Maternal care for retroversion of gravid uterusNon-billable
  • O34.531 Maternal care for retroversion of gravid uterus, first trimester
  • O34.532 Maternal care for retroversion of gravid uterus, second trimester
  • O34.533 Maternal care for retroversion of gravid uterus, third trimester
  • O34.539 Maternal care for retroversion of gravid uterus, unspecified trimester
  • O34.59 Maternal care for other abnormalities of gravid uterusNon-billable
  • O34.591 Maternal care for other abnormalities of gravid uterus, first trimester
  • O34.592 Maternal care for other abnormalities of gravid uterus, second trimester
  • O34.593 Maternal care for other abnormalities of gravid uterus, third trimester
  • O34.599 Maternal care for other abnormalities of gravid uterus, unspecified trimester
  • O34.6 Maternal care for abnormality of vaginaNon-billable
  • O34.60 Maternal care for abnormality of vagina, unspecified trimester
  • O34.61 Maternal care for abnormality of vagina, first trimester
  • O34.62 Maternal care for abnormality of vagina, second trimester
  • O34.63 Maternal care for abnormality of vagina, third trimester
  • O34.7 Maternal care for abnormality of vulva and perineumNon-billable
  • O34.70 Maternal care for abnormality of vulva and perineum, unspecified trimester
  • O34.71 Maternal care for abnormality of vulva and perineum, first trimester
  • O34.72 Maternal care for abnormality of vulva and perineum, second trimester
  • O34.73 Maternal care for abnormality of vulva and perineum, third trimester
  • O34.8 Maternal care for other abnormalities of pelvic organsNon-billable
  • O34.80 Maternal care for other abnormalities of pelvic organs, unspecified trimester
  • O34.81 Maternal care for other abnormalities of pelvic organs, first trimester
  • O34.82 Maternal care for other abnormalities of pelvic organs, second trimester
  • O34.83 Maternal care for other abnormalities of pelvic organs, third trimester
  • O34.9 Maternal care for abnormality of pelvic organ, unspecifiedNon-billable
  • O34.90 Maternal care for abnormality of pelvic organ, unspecified, unspecified trimester
  • O34.91 Maternal care for abnormality of pelvic organ, unspecified, first trimester
  • O34.92 Maternal care for abnormality of pelvic organ, unspecified, second trimester
  • O34.93 Maternal care for abnormality of pelvic organ, unspecified, third trimester

About the O34 Code Range

These codes describe maternal care for abnormalities of pelvic organs, including the uterus, cervix, vagina, vulva and perineum.

The subdivisions first separate conditions by organ and type of abnormality. Uterine codes distinguish malformations present from birth, benign tumors, scars from previous surgery, and abnormalities of the pregnant uterus. O34.2 separates scars from previous cesarean delivery, cesarean scar defects and other surgery. O34.5 separates incarceration, prolapse and retroversion of the pregnant uterus. Other subdivisions identify cervical, vaginal, vulvar and perineal abnormalities, as well as other or unspecified pelvic organ abnormalities. Many of these subdivisions further separate care by trimester; the scar and pregnant-uterus subdivisions instead distinguish the type of abnormality.

Questions About This Page

How many billable codes are in the O34 range?

Of the 70 codes in this range, 54 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.

What does the O34 range classify?

The range classifies maternal care for abnormality of pelvic organs. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.