ICD-10-CM diagnosis code
O10.93 Unspecified pre-existing hypertension complicating the puerperium
- Billable
- Yes, a complete code (FY2026)
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Other codes in O10
36 complete codes in this category.
- O10.411Pre-existing secondary hypertension complicating pregnancy, first trimester
- O10.412Pre-existing secondary hypertension complicating pregnancy, second trimester
- O10.413Pre-existing secondary hypertension complicating pregnancy, third trimester
- O10.419Pre-existing secondary hypertension complicating pregnancy, unspecified trimester
- O10.42Pre-existing secondary hypertension complicating childbirth
- O10.43Pre-existing secondary hypertension complicating the puerperium
- O10.911Unspecified pre-existing hypertension complicating pregnancy, first trimester
- O10.912Unspecified pre-existing hypertension complicating pregnancy, second trimester
- O10.913Unspecified pre-existing hypertension complicating pregnancy, third trimester
- O10.919Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester
- O10.92Unspecified pre-existing hypertension complicating childbirth
- O10.93Unspecified pre-existing hypertension complicating the puerperium
Documentation tips
- Make sure the note supports every element of the title, “Unspecified pre-existing hypertension complicating the puerperium”: 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 O10.
The international WHO ICD-10 also has O10, 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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