ICD-10-CM diagnosis code
O34.70 Maternal care for abnormality of vulva and perineum, unspecified trimester
- Billable
- Yes, a complete code (FY2026)
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Other codes in O34
54 complete codes in this category.
- O34.593Maternal care for other abnormalities of gravid uterus, third trimester
- O34.599Maternal care for other abnormalities of gravid uterus, unspecified trimester
- O34.60Maternal care for abnormality of vagina, unspecified trimester
- O34.61Maternal care for abnormality of vagina, first trimester
- O34.62Maternal care for abnormality of vagina, second trimester
- O34.63Maternal care for abnormality of vagina, third trimester
- O34.70Maternal care for abnormality of vulva and perineum, unspecified trimester
- O34.71Maternal care for abnormality of vulva and perineum, first trimester
- O34.72Maternal care for abnormality of vulva and perineum, second trimester
- O34.73Maternal care for abnormality of vulva and perineum, third trimester
- O34.80Maternal care for other abnormalities of pelvic organs, unspecified trimester
- O34.81Maternal care for other abnormalities of pelvic organs, first trimester
Documentation tips
- Make sure the note supports every element of the title, “Maternal care for abnormality of vulva and perineum, unspecified trimester”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to O34.
The international WHO ICD-10 also has O34, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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