O91.212 Nonpurulent mastitis associated with pregnancy, second trimester

Name of the Condition

• Nonpurulent Mastitis Associated with Pregnancy, Second Trimester (O91.212)

Summary

This condition involves inflammation of the breast tissue without pus formation, occurring specifically during the second trimester of pregnancy. It may present as breast pain, swelling, or redness and requires clinical evaluation to differentiate from other causes of breast inflammation.

Causes

Nonpurulent mastitis in the second trimester typically results from hormonal changes, milk stasis, or mechanical irritation. Unlike purulent mastitis, it does not involve bacterial infection or pus. Factors like hormonal fluctuations, incomplete milk removal, or nipple trauma may contribute to inflammation without overt infection.

Risk Factors

• Hormonal changes during the second trimester.
• Inadequate milk removal or engorgement.
• Nipple trauma or irritation.
• Previous episodes of breast inflammation.
• Poor breastfeeding technique or positioning (if lactation is initiated).

Symptoms

• Breast pain, tenderness, or swelling.
• Redness or warmth of the breast tissue.
• Generalized breast discomfort without systemic fever.
• Absence of pus or discharge.
• Possible nipple sensitivity or irritation.

Diagnosis

Diagnosis is clinical, based on symptoms and physical examination. Providers assess for signs of inflammation (e.g., redness, swelling) and rule out infectious causes. Imaging or cultures are not typically required unless symptoms suggest a more severe condition.

Treatment Options

Treatment focuses on relieving symptoms and addressing underlying causes. This may include warm compresses, gentle breast massage, proper milk removal techniques, and supportive care. Antibiotics are not indicated unless infection is suspected.

Prognosis and Follow-Up

Prognosis is generally good with appropriate management. Symptoms often resolve with conservative measures. Follow-up may be recommended to monitor for recurrence or progression to infection.

Complications

Complications are rare but may include progression to purulent mastitis or abscess formation if infection develops. Severe cases could lead to systemic symptoms, though this is uncommon in nonpurulent cases.

Lifestyle & Prevention

• Ensure proper breast support and hygiene.
• Practice gentle breast massage to relieve engorgement.
• Address nipple trauma promptly to prevent irritation.
• Maintain regular prenatal care to monitor breast health.

When to Seek Professional Help

Seek care if symptoms worsen, fever develops, or pus is present, as these may indicate infection. Persistent or severe breast pain should also prompt evaluation.

Tips for Medical Coders

Document the trimester (second trimester) and confirm nonpurulent inflammation without infection. Ensure clinical notes support the absence of pus or bacterial involvement to justify this code.