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Home/Diagnosis/ICD-10 Coding for Mastitis

ICD-10 Coding for Mastitis

N61.0
N61.22
O91.21

Complete ICD-10-CM coding and documentation guide for icd-10 coding for mastitis includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Breast Infection
Lactational Mastitis
Granulomatous Mastitis
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Key Information: ICD-10 Coding for Mastitis

Essential facts and insights about ICD-10 Coding for Mastitis

Use ICD-10 code N61.0 for acute mastitis without abscess, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Acute mastitis without abscess

Billable Code
N61.0
Billable

Diagnostic Criteria

  • • No abscess formation on clinical exam or imaging

Applicable To

  • • Acute mastitis without purulent drainage

Important Notes

  • • Ensure documentation specifies absence of abscess.

Granulomatous mastitis, left breast

Billable Code
N61.22
Billable

Diagnostic Criteria

  • • Biopsy confirmation of granulomatous inflammation
  • • Chronicity of symptoms

Applicable To

  • • Chronic granulomatous inflammation

Important Notes

  • • Biopsy confirmation is crucial for accurate coding.

Nonpurulent mastitis associated with pregnancy

Non-Billable
O91.21
Non-Billable

Diagnostic Criteria

  • • Pregnancy status confirmed
  • • No abscess on imaging

Applicable To

  • • Mastitis during pregnancy without abscess

Important Notes

  • • Ensure pregnancy linkage is documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

B95.61

Staphylococcus aureus as the cause of diseases classified elsewhere

Use when Staphylococcus aureus is identified as the causative organism.

Frequently Asked Questions

What is the ICD-10 code for mastitis?

The ICD-10 code for acute mastitis without abscess is N61.0. For granulomatous mastitis, use N61.22. If associated with pregnancy, use O91.21.

How do you code mastitis with abscess?

Mastitis with abscess is coded as N61.1. Ensure documentation confirms abscess presence via imaging.

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