U.S. ICD-10-CM · FY 2027

N61 ICD-10-CM Code: Inflammatory disorders of breast

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

N61

Inflammatory disorders of breast

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where N61 sits

  1. 1

    Chapter 14

    Diseases of the genitourinary system (N00-N99)

  2. 2

    Section

    Disorders of breast (N60-N65)

  3. 3

    Category N61

    Inflammatory disorders of breast

  4. 4

    Code N61

    Inflammatory disorders of breast

More specific choices

Codes under N61

N61 is a non-billable category. Choose the child code that best matches the documented diagnosis.

N61.0

Mastitis without abscess

N61.1

Abscess of the breast and nipple

N61.2

Granulomatous mastitis

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for N61.

Code first

No “code first” instruction is listed for N61.

Use additional code

No “use additional code” instruction is listed for N61.

Excludes1

Conditions that should not be reported together with this code.

  • inflammatory carcinoma of breast (C50.A-)
  • inflammatory disorder of breast associated with childbirth (O91.-)
  • neonatal infective mastitis (P39.0)
  • thrombophlebitis of breast [Mondor's disease] (I80.8)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for N61.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code N61 mean?

N61 is the FY 2027 U.S. ICD-10-CM code for “Inflammatory disorders of breast.”

Is N61 a billable or specific ICD-10-CM code?

No. N61 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is N61 located in ICD-10-CM?

N61 is listed in Chapter 14, Diseases of the genitourinary system (N00-N99), within Disorders of breast (N60-N65) (N60–N65), under category N61, Inflammatory disorders of breast.

What coding notes are listed for N61?

No inclusion terms are listed for N61 in this reference record. No code-first instruction is listed. Excludes1 notes: inflammatory carcinoma of breast (C50.A-); inflammatory disorder of breast associated with childbirth (O91.-); neonatal infective mastitis (P39.0); thrombophlebitis of breast [Mondor's disease] (I80.8). No Excludes2 note is listed.

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