O91.23 Nonpurulent mastitis associated with lactation

Name of the Condition

• Nonpurulent Mastitis Associated with Lactation (O91.23)

Summary

This condition involves inflammation of the breast tissue without pus formation, occurring during breastfeeding. It may present with breast pain, swelling, or redness and requires evaluation to distinguish from infectious causes. Management focuses on symptom relief and monitoring for progression.

Causes

Nonpurulent mastitis during lactation typically results from milk stasis, hormonal changes, or mechanical irritation. Unlike purulent mastitis, it does not involve bacterial infection or pus formation. Factors like incomplete milk removal, engorgement, or nipple trauma may contribute to inflammation without overt infection.

Risk Factors

• Inadequate milk removal or engorgement.
• Nipple trauma or irritation.
• Hormonal fluctuations during lactation.
• Previous episodes of breast inflammation.
• Poor breastfeeding technique or positioning.

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 infection by evaluating for fever or pus. Cultures are generally not required unless infection is suspected. Imaging (e.g., ultrasound) may be used to rule out abscess or other complications.

Treatment Options

• Warm compresses to relieve discomfort.
• Gentle breast massage to improve milk flow.
• Ensuring complete milk removal (e.g., frequent feeding or pumping).
• Pain relief medications (e.g., acetaminophen or ibuprofen) as needed.
• Correcting breastfeeding technique to reduce irritation.

Prognosis and Follow-Up

Most cases resolve with proper management, including improved milk removal and symptom relief. Follow-up may involve monitoring for worsening symptoms or signs of infection. If symptoms persist or worsen, further evaluation is recommended.

Complications

• Progression to purulent mastitis if infection develops.
• Abscess formation (rare but possible if inflammation persists).
• Temporary disruption of breastfeeding due to pain or discomfort.

Lifestyle & Prevention

• Maintain proper breastfeeding technique to ensure complete milk removal.
• Avoid tight or restrictive clothing that may irritate the breasts.
• Apply warm compresses before feeding to promote milk flow.
• Stay hydrated and maintain overall breast health during lactation.

When to Seek Professional Help

Seek care if symptoms worsen, fever develops, pus is present, or pain becomes severe. Persistent redness, swelling, or systemic symptoms (e.g., chills) may indicate infection and require prompt evaluation.

Tips for Medical Coders

Document the absence of pus and the association with lactation to support the O91.23 code. Include details on clinical findings (e.g., redness, tenderness) and management strategies to clarify the noninfectious nature of the inflammation. Ensure documentation distinguishes this from purulent mastitis or other breast conditions.