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v1.0.0
ICD-10 Guide
ICD-10 CodesN61.0

N61.0

Billable

Mastitis without abscess

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N61.0 is a billable code used to indicate a diagnosis of mastitis without abscess.

Key Diagnostic Point:

Mastitis without abscess is an inflammatory condition of the breast tissue that typically occurs in lactating women but can also affect non-lactating individuals. It is characterized by breast pain, swelling, warmth, and redness, often accompanied by systemic symptoms such as fever and malaise. The inflammation is usually due to bacterial infection, often stemming from blocked milk ducts or nipple fissures. In non-lactating women, mastitis can occur due to other factors such as trauma, duct ectasia, or hormonal changes. Diagnosis is primarily clinical, supported by imaging studies like ultrasound if an abscess is suspected. Treatment generally involves antibiotics and supportive care, including warm compresses and analgesics. If left untreated, mastitis can lead to the formation of an abscess, necessitating more invasive interventions. Understanding the nuances of mastitis without abscess is crucial for accurate coding and management, particularly in differentiating it from other breast conditions such as breast lumps or benign breast disease.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between mastitis and other breast conditions.
  • Understanding the clinical presentation and symptoms.
  • Knowledge of treatment protocols and their documentation.
  • Awareness of potential complications like abscess formation.

Audit Risk Factors

  • Inadequate documentation of symptoms and clinical findings.
  • Failure to specify the absence of abscess when coding.
  • Misclassification of mastitis type (e.g., lactational vs. non-lactational).
  • Lack of follow-up documentation on treatment response.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed clinical notes on symptoms, treatment plans, and follow-up care.

Common Clinical Scenarios

Postpartum women presenting with breast pain and fever.

Billing Considerations

Documentation should clearly differentiate between mastitis and other breast conditions.

General Surgery

Documentation Requirements

Surgical notes if any intervention is performed, including imaging results.

Common Clinical Scenarios

Patients with suspected abscess requiring surgical evaluation.

Billing Considerations

Ensure clarity on whether the condition is mastitis without abscess or if surgical intervention is needed.

Coding Guidelines

Inclusion Criteria

Use N61.0 When
  • According to ICD
  • 10 guidelines, N61
  • 0 should be used when there is clear documentation of mastitis without abscess

Exclusion Criteria

Do NOT use N61.0 When
  • It is important to exclude conditions such as breast abscess or other inflammatory breast diseases

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Office visit, established patient

Clinical Scenario

Used for follow-up visits for mastitis management.

Documentation Requirements

Document symptoms, treatment response, and any changes in condition.

Specialty Considerations

Obstetricians should note lactation status.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of mastitis, improving the accuracy of data collection and reimbursement processes. N61.0 provides a clear distinction from other breast conditions, enhancing clinical understanding and management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of mastitis, improving the accuracy of data collection and reimbursement processes. N61.0 provides a clear distinction from other breast conditions, enhancing clinical understanding and management.

Reimbursement & Billing Impact

reimbursement processes. N61.0 provides a clear distinction from other breast conditions, enhancing clinical understanding and management.

Resources

Clinical References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Coding & Billing References

  • •
    American College of Obstetricians and Gynecologists (ACOG)

Frequently Asked Questions

What are the common symptoms of mastitis without abscess?

Common symptoms include breast pain, swelling, redness, warmth, and systemic symptoms like fever.

How is mastitis without abscess treated?

Treatment typically involves antibiotics, warm compresses, and analgesics for pain relief.

What imaging is used to diagnose mastitis?

Ultrasound is often used to evaluate for abscess formation if clinically indicated.

Can mastitis occur in non-lactating women?

Yes, mastitis can occur in non-lactating women due to various factors such as trauma or hormonal changes.