Decreased fetal movements, unspecified trimester, fetus 1

This code signifies a maternal perception of reduced or absent fetal activity during pregnancy, where the specific trimester of onset is not documented. It indicates a potential compromise to fetal well-being requiring further evaluation. This finding prompts investigation into underlying causes that could affect fetal health.

Use this code when a pregnant patient presents with a complaint of decreased fetal movements, and the medical record does not specify the trimester in which this symptom began. Documentation should clearly state "decreased fetal movements" or "reduced fetal activity" without a defined trimester. This code is appropriate when the provider has not yet determined a definitive cause for the decreased movements.

• Always attempt to clarify the trimester of onset with the provider to use a more specific code (O36.811-, O36.812-, O36.813-).
• Do not use this code if a specific cause for the decreased fetal movements has been identified and coded elsewhere (e.g., fetal growth restriction, placental insufficiency).
• Sequence this code as a primary diagnosis when the decreased fetal movement is the reason for the encounter, followed by any associated conditions or findings.