U.S. ICD-10-CM · FY 2027

N64 ICD-10-CM Code: Other 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

N64

Other disorders of breast

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

Classification

Where N64 sits

  1. 1

    Chapter 14

    Diseases of the genitourinary system (N00-N99)

  2. 2

    Section

    Disorders of breast (N60-N65)

  3. 3

    Category N64

    Other disorders of breast

  4. 4

    Code N64

    Other disorders of breast

More specific choices

Codes under N64

N64 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for N64.

Code first

No “code first” instruction is listed for N64.

Use additional code

No “use additional code” instruction is listed for N64.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for N64.

Excludes2

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

  • mechanical complication of breast prosthesis and implant (T85.4-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

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 N64 mean?

N64 is the FY 2027 U.S. ICD-10-CM code for “Other disorders of breast.”

Is N64 a billable or specific ICD-10-CM code?

No. N64 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 N64 located in ICD-10-CM?

N64 is listed in Chapter 14, Diseases of the genitourinary system (N00-N99), within Disorders of breast (N60-N65) (N60–N65), under category N64, Other disorders of breast.

What coding notes are listed for N64?

No inclusion terms are listed for N64 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: mechanical complication of breast prosthesis and implant (T85.4-).

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