ICD-10 Code C79.81

Secondary malignant neoplasm of breast

Version 2019 Billable Code Neoplasm Malignant Secondary
ICD-10: C79.81
Short Description:Secondary malignant neoplasm of breast
Long Description:Secondary malignant neoplasm of breast

Valid for Submission

ICD-10 C79.81 is a billable code used to specify a medical diagnosis of secondary malignant neoplasm of breast. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

  • Neoplasms (C00–D48)
    • Malignant neoplasms of ill-defined, other secondary and unspecified sites (C76-C80)
      • Secondary malignant neoplasm of other and unspecified sites (C79)

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 C79.81 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 582 - MASTECTOMY FOR MALIGNANCY WITH CC/MCC
  • 583 - MASTECTOMY FOR MALIGNANCY WITHOUT CC/MCC

Convert C79.81 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 198.81 - Second malig neo breast

Synonyms

The following clinical terms are approximate synonyms:

  • Malignant neoplasm of axillary tail of breast
  • Malignant neoplasm of axillary tail of breast
  • Malignant neoplasm of axillary tail of female breast
  • Malignant neoplasm of breast lower inner quadrant
  • Malignant neoplasm of breast lower outer quadrant
  • Malignant neoplasm of breast upper inner quadrant
  • Malignant neoplasm of breast upper outer quadrant
  • Malignant neoplasm of central part of female breast
  • Malignant neoplasm of ectopic site of female breast
  • Malignant neoplasm of ectopic site of male breast
  • Malignant neoplasm of lower-inner quadrant of female breast
  • Malignant neoplasm of lower-outer quadrant of female breast
  • Malignant neoplasm of upper-inner quadrant of female breast
  • Malignant neoplasm of upper-outer quadrant of female breast
  • Metastasis to breast of unknown primary
  • Neoplasm of areola of female breast
  • Neoplasm of areola of male breast
  • Neoplasm of axillary tail of female breast
  • Neoplasm of breast distant metastasis staging category cM0 as per American Joint Committee on Cancer 7th edition
  • Neoplasm of breast distant metastasis staging category M1: Distant detectable metastasis found by clinical and radiographic means and/or histologically proven larger than 0.2 mm
  • Neoplasm of central portion of female breast
  • Neoplasm of ectopic female breast tissue
  • Neoplasm of ectopic male breast tissue
  • Neoplasm of lower inner quadrant of female breast
  • Neoplasm of lower outer quadrant of female breast
  • Neoplasm of nipple of female breast
  • Neoplasm of nipple of male breast
  • Neoplasm of upper inner quadrant of female breast
  • Neoplasm of upper outer quadrant of female breast
  • Secondary malignant neoplasm of areola of female breast
  • Secondary malignant neoplasm of areola of male breast
  • Secondary malignant neoplasm of axillary tail of breast
  • Secondary malignant neoplasm of axillary tail of female breast
  • Secondary malignant neoplasm of central portion of female breast
  • Secondary malignant neoplasm of ectopic female breast tissue
  • Secondary malignant neoplasm of ectopic male breast tissue
  • Secondary malignant neoplasm of female breast
  • Secondary malignant neoplasm of lower inner quadrant of female breast
  • Secondary malignant neoplasm of lower outer quadrant of female breast
  • Secondary malignant neoplasm of male breast
  • Secondary malignant neoplasm of nipple of female breast
  • Secondary malignant neoplasm of nipple of male breast
  • Secondary malignant neoplasm of upper inner quadrant of female breast
  • Secondary malignant neoplasm of upper outer quadrant of female breast

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 C79.81 are found in the index:


Table of Neoplasms

The code C79.81 is included in the table of neoplasms by anatomical site. For each site there are six possible code numbers according to whether the neoplasm in question is malignant, benign, in situ, of uncertain behavior, or of unspecified nature. The description of the neoplasm will often indicate which of the six columns is appropriate.

Where such descriptors are not present, the remainder of the Index should be consulted where guidance is given to the appropriate column for each morphological (histological) variety listed. However, the guidance in the Index can be overridden if one of the descriptors mentioned above is present.

The Tabular must be reviewed for the complete diagnosis code.

Neoplasm, neoplastic Malignant
Primary
Malignant
Secondary
CaInSitu Benign Uncertain
Behavior
Unspecified
Behavior
»areola
C50.0C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
C50.9C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »areola
C50.0C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »axillary tail
C50.6C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »central portion
C50.1C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »inner
C50.8C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »lower
C50.8C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »lower-inner quadrant
C50.3C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »lower-outer quadrant
C50.5C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »mastectomy site (skin) [See Also: Neoplasm, breast, skin]
    »specified as breast tissue
C50.8C79.81
»breast (connective tissue) (glandular tissue) (soft parts)
  »midline
C50.8C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »nipple
C50.0C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »outer
C50.8C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »tail (axillary)
C50.6C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »upper
C50.8C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »upper-inner quadrant
C50.2C79.81D05.D24.D48.6D49.3
»breast (connective tissue) (glandular tissue) (soft parts)
  »upper-outer quadrant
C50.4C79.81D05.D24.D48.6D49.3
»mastectomy site (skin) [See Also: Neoplasm, breast, skin]
  »specified as breast tissue
C50.8C79.81
»nipple
C50.0C79.81D05.D24.
»skin NOS
  »mastectomy site (skin) [See Also: Neoplasm, skin, breast]
    »specified as breast tissue
C50.8C79.81

Information for Patients


Breast Cancer

Breast cancer affects one in eight women during their lives. No one knows why some women get breast cancer, but there are many risk factors. Risks that you cannot change include

  • Age - the risk rises as you get older
  • Genes - two genes, BRCA1 and BRCA2, greatly increase the risk. Women who have family members with breast or ovarian cancer may wish to be tested for the genes.
  • Personal factors - beginning periods before age 12 or going through menopause after age 55

Other risks include obesity, using hormone replacement therapy (also called menopausal hormone therapy), taking birth control pills, drinking alcohol, not having children or having your first child after age 35, and having dense breasts.

Symptoms of breast cancer may include a lump in the breast, a change in size or shape of the breast, and discharge from a nipple. Breast self-exams and mammography can help find breast cancer early, when it is most treatable. One possible treatment is surgery. It could be a lumpectomy or a mastectomy. Other treatments include radiation therapy, chemotherapy, hormone therapy, and targeted therapy. Targeted therapy uses substances that attack cancer cells without harming normal cells.

Men can have breast cancer, too, but it is rare.

NIH: National Cancer Institute

  • After chemotherapy - discharge (Medical Encyclopedia)
  • BRCA1 and BRCA2 gene testing (Medical Encyclopedia)
  • Breast biopsy -- stereotactic (Medical Encyclopedia)
  • Breast biopsy -- ultrasound (Medical Encyclopedia)
  • Breast cancer (Medical Encyclopedia)
  • Breast cancer staging (Medical Encyclopedia)
  • Breast lump (Medical Encyclopedia)
  • Breast self exam (Medical Encyclopedia)
  • Hormone therapy for breast cancer (Medical Encyclopedia)
  • Understanding Chemotherapy - NIH - Easy-to-Read (National Cancer Institute)
  • What to Know about Brachytherapy (A Type of Internal Radiation Therapy) - NIH - Easy-to-Read (National Cancer Institute)
  • What to Know about External Beam Radiation Therapy - NIH - Easy-to-Read (National Cancer Institute)

[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.