O25.13 Malnutrition in pregnancy, third trimester

Name of the Condition

• Malnutrition in pregnancy, third trimester (O25.13)

Summary

Malnutrition in pregnancy, third trimester, refers to inadequate nutrient intake or absorption during the final stage of gestation, which can affect maternal health and fetal development. This condition requires assessment and management to support both the pregnant individual and the developing fetus.

Causes

Malnutrition in the third trimester may result from insufficient dietary intake, poor absorption of nutrients, or increased metabolic demands. Contributing factors can include limited access to nutritious food, gastrointestinal disorders, or conditions that increase nutrient requirements during late pregnancy.

Risk Factors

• Low socioeconomic status or food insecurity.
• History of eating disorders or restrictive diets.
• Multiple pregnancies (e.g., twins or triplets).
• Chronic illnesses affecting nutrient absorption (e.g., celiac disease, inflammatory bowel disease).
• Substance use disorders.
• Adolescence or advanced maternal age.

Symptoms

• Unintentional weight loss or inadequate weight gain.
• Fatigue or weakness.
• Hair loss or brittle nails.
• Delayed wound healing.
• Frequent infections due to weakened immunity.
• In severe cases, signs of micronutrient deficiencies (e.g., anemia, pica).

Diagnosis

Diagnosis involves evaluating dietary history, physical examination, and laboratory tests to assess nutrient levels (e.g., iron, vitamins). Healthcare providers may also monitor fetal growth and maternal weight trends to identify malnutrition in the third trimester.

Treatment Options

Treatment focuses on addressing nutritional deficiencies through dietary modifications, supplements, or medical nutrition therapy. In severe cases, hospitalization may be required for intensive nutritional support. Regular monitoring of maternal and fetal health is essential.

Prognosis and Follow-Up

With proper management, outcomes for both mother and fetus can improve. Follow-up care includes ongoing nutritional assessments, prenatal visits, and monitoring for complications. Long-term prognosis depends on the severity and timeliness of intervention.

Complications

• Fetal growth restriction or low birth weight.
• Preterm birth.
• Maternal anemia or other micronutrient deficiencies.
• Increased risk of infections.
• Postpartum recovery challenges.

Lifestyle & Prevention

• Ensure balanced, nutrient-dense meals with adequate calories and protein.
• Address barriers to food access or intake (e.g., nausea, dietary restrictions).
• Regular prenatal care to monitor nutritional status.
• Consider supplementation if dietary intake is insufficient.

When to Seek Professional Help

Seek care if experiencing unintentional weight loss, persistent fatigue, or signs of nutrient deficiencies. Prompt evaluation is critical to prevent complications for both mother and fetus.

Tips for Medical Coders

Document the trimester (third) and any contributing factors (e.g., dietary intake, absorption issues) to support accurate coding. Ensure clinical documentation aligns with the specificity of O25.13 for third-trimester malnutrition.