ICD-10-CM diagnosis code
O99.330 Smoking (tobacco) complicating pregnancy, unspecified trimester
- Billable
- Yes, a complete code (FY2026)
Documenting O99.330? Write the note in seconds
Paste your rough notes and get a structured SOAP note. Free, no account needed.
Other codes in O99
96 complete codes in this category.
- O99.320Drug use complicating pregnancy, unspecified trimester
- O99.321Drug use complicating pregnancy, first trimester
- O99.322Drug use complicating pregnancy, second trimester
- O99.323Drug use complicating pregnancy, third trimester
- O99.324Drug use complicating childbirth
- O99.325Drug use complicating the puerperium
- O99.330Smoking (tobacco) complicating pregnancy, unspecified trimester
- O99.331Smoking (tobacco) complicating pregnancy, first trimester
- O99.332Smoking (tobacco) complicating pregnancy, second trimester
- O99.333Smoking (tobacco) complicating pregnancy, third trimester
- O99.334Smoking (tobacco) complicating childbirth
- O99.335Smoking (tobacco) complicating the puerperium
Documentation tips
- Make sure the note supports every element of the title, “Smoking (tobacco) complicating pregnancy, 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 O99.
The international WHO ICD-10 also has O99, 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.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free