ICD-10 Code N63.21
Unspecified lump in the left breast, upper outer quadrant
| ICD-10: | N63.21 |
| Short Description: | Unspecified lump in the left breast, upper outer quadrant |
| Long Description: | Unspecified lump in the left breast, upper outer quadrant |
Valid for Submission
ICD-10 N63.21 is a billable code used to specify a medical diagnosis of unspecified lump in the left breast, upper outer quadrant. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.
Code Classification
- Diseases of the genitourinary system (N00–N99)
Information for Medical Professionals
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). The diagnosis code N63.21 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.
- 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
Convert N63.21 to ICD-9
The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:
- 611.72 - Lump or mass in breast (Approximate Flag)
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 N63.21 are found in the index:
- - Lump - See Also: Mass;
- - breast - N63.0
- - left
- - upper outer quadrant - N63.21
- - left
- - breast - N63.0
Replacement Code
N6321 replaces the following previously assigned ICD-10 code(s):
- N63 - Unspecified lump in breast
Information for Patients
Breast Diseases
Most women experience breast changes at some time. Your age, hormone levels, and medicines you take may cause lumps, bumps, and discharges (fluids that are not breast milk).
If you have a breast lump, pain, discharge or skin irritation, see your health care provider. Minor and serious breast problems have similar symptoms. Although many women fear cancer, most breast problems are not cancer.
Some common breast changes are
- Fibrocystic breast changes - lumpiness, thickening and swelling, often just before a woman's period
- Cysts - fluid-filled lumps
- Fibroadenomas - solid, round, rubbery lumps that move easily when pushed, occurring most in younger women
- Intraductal papillomas - growths similar to warts near the nipple
- Blocked milk ducts
- Milk production when a woman is not breastfeeding
NIH: National Cancer Institute
- Breast - premenstrual tenderness and swelling (Medical Encyclopedia)
- Breast biopsy -- stereotactic (Medical Encyclopedia)
- Breast biopsy -- ultrasound (Medical Encyclopedia)
- Breast infection (Medical Encyclopedia)
- Breast lump (Medical Encyclopedia)
- Breast MRI scan (Medical Encyclopedia)
- Breast pain (Medical Encyclopedia)
- Breast self exam (Medical Encyclopedia)
- Breast skin and nipple changes (Medical Encyclopedia)
- Fibroadenoma - breast (Medical Encyclopedia)
- Fibrocystic breast disease (Medical Encyclopedia)
- Gynecomastia (Medical Encyclopedia)
- Intraductal papilloma (Medical Encyclopedia)
- Nipple problems (Medical Encyclopedia)
[Learn More]
ICD-10 Footnotes
General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
- Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
- No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
- Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.