ICD-10-CM Code N63.42

Unspecified lump in left breast, subareolar

Version 2020 Billable Code

Valid for Submission

N63.42 is a billable code used to specify a medical diagnosis of unspecified lump in left breast, subareolar. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:N63.42
Short Description:Unspecified lump in left breast, subareolar
Long Description:Unspecified lump in left breast, subareolar

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code N63.42 are found in the index:


Diagnostic Related Groups

The ICD-10 code N63.42 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 597 - MALIGNANT BREAST DISORDERS WITH MCC
  • 598 - MALIGNANT BREAST DISORDERS WITH CC
  • 599 - MALIGNANT BREAST DISORDERS WITHOUT CC/MCC
  • 600 - NON-MALIGNANT BREAST DISORDERS WITH CC/MCC
  • 601 - NON-MALIGNANT BREAST DISORDERS WITHOUT CC/MCC

Replacement Code

N6342 replaces the following previously assigned ICD-10 code(s):

  • N63 - Unspecified lump in breast

Convert N63.42 to ICD-9

  • 611.72 - Lump or mass in breast (Approximate Flag)

Code Classification

  • Diseases of the genitourinary system (N00–N99)
    • Disorders of breast (N60-N65)
      • Unspecified lump in breast (N63)

Code History

  • FY 2018 - Code Added, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020