In simple words: This code means the mother smoked during her pregnancy's second trimester (roughly weeks 14-28), causing health problems.It's important for the doctor to record exactly what kind of tobacco was used.

This code, O99.332, is used to classify smoking (tobacco use) as a complication of pregnancy specifically during the second trimester (14 weeks 0 days to less than 28 weeks 0 days gestation).It should be used only in maternal records and not on newborn records.An additional code from category F17 should be used to specify the type of tobacco product used.

Example 1: A 25-year-old pregnant woman at 20 weeks gestation presents for a routine prenatal check-up. She admits to smoking a pack of cigarettes daily.The obstetrician codes O99.332 and F17.210 (Nicotine dependence, cigarettes)., A 30-year-old woman at 18 weeks gestation is admitted to the hospital for severe pre-eclampsia. She reports using chewing tobacco throughout her pregnancy. The physician codes O99.332 and F17.220 (Nicotine dependence, chewing tobacco)., A 22-year-old woman at 26 weeks gestation is hospitalized for preterm labor. During her history, she discloses using vaping products, but not cigarettes.The doctor uses O99.332 and F17.29 (Nicotine dependence, other tobacco product) with additional documentation specifying the vaping device and type of substance.

Detailed documentation should include:

** Accurate coding requires precise documentation of the type of tobacco used and the gestational age.The use of standardized documentation templates and electronic health record (EHR) prompts can help improve coding accuracy.