Drug use complicating pregnancy, unspecified trimester

This code signifies any adverse health effects experienced by a pregnant patient due to the use of illicit drugs, prescription medications outside of medical guidance, or substance abuse. It indicates that drug use is a complicating factor in the pregnancy, without specifying the trimester of exposure.

Apply this code when documentation clearly indicates drug use by the pregnant patient is impacting the pregnancy, and the specific trimester of exposure is not recorded. This includes situations where the drug use is ongoing, recent, or has led to complications. Documentation should explicitly link the drug use to the pregnancy's course.

• Always sequence this code after the primary obstetric code (e.g., O09.-, O10.-, O20.-).
• Do not use this code if a more specific code for drug use complicating pregnancy (e.g., with specific trimester or type of drug) is available and supported by documentation.
• Ensure documentation specifies "drug use" rather than just "substance use" if a more specific substance code is not available.