2021 ICD-10-CM Code N63.25 - Unspecified lump in the left breast, overlapping quadrants

Valid for Submission

N63.25 is a billable diagnosis code used to specify a medical diagnosis of unspecified lump in the left breast, overlapping quadrants. The code N63.25 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

Unspecified diagnosis codes like N63.25 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Code Classification

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

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 N63.25 are found in the index:

- Lump - See Also: Mass;
- - breast - N63.0
  - - left
    - - overlapping quadrants - N63.25

Diagnostic Related Groups - MS-DRG Mapping

The ICD-10 code N63.25 is grouped in the following groups for version MS-DRG V38.0 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 10/01/2020 through 09/30/2021.

600 - NON-MALIGNANT BREAST DISORDERS WITH CC/MCC - Relative Weight: 0.9957
601 - NON-MALIGNANT BREAST DISORDERS WITHOUT CC/MCC - Relative Weight: 0.6876

Replacement Code

N6325 replaces the following previously assigned ICD-10 code(s):

N63.21 - Unspecified lump in the left breast, upper outer quadrant
N63.22 - Unspecified lump in the left breast, upper inner quadrant
N63.23 - Unspecified lump in the left breast, lower outer quadrant
N63.24 - Unspecified lump in the left breast, lower inner quadrant

Code History

FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

ICD-10:	N63.25
Short Description:	Unspecified lump in the left breast, overlapping quadrants
Long Description:	Unspecified lump in the left breast, overlapping quadrants