ICD-10-CM Code C79.81

Secondary malignant neoplasm of breast

Version 2020 Billable Code Neoplasm Malignant Secondary

Valid for Submission

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 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code C79.81 might also be used to specify conditions or terms like 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, etc

The following anatomical sites found in the Table of Neoplasms apply to this code given the correct histological behavior: areola ; breast (connective tissue) (glandular tissue) (soft parts) ; breast (connective tissue) (glandular tissue) (soft parts) areola ; breast (connective tissue) (glandular tissue) (soft parts) axillary tail ; breast (connective tissue) (glandular tissue) (soft parts) central portion ; breast (connective tissue) (glandular tissue) (soft parts) inner ; breast (connective tissue) (glandular tissue) (soft parts) lower ; etc

ICD-10:C79.81
Short Description:Secondary malignant neoplasm of breast
Long Description:Secondary malignant neoplasm of 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:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • 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 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

Diagnostic Related Groups

The ICD-10 code C79.81 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.

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

Convert C79.81 to ICD-9

  • 198.81 - Second malig neo breast

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)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, 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

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.

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


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