2024 ICD-10-CM Diagnosis Code C50.929

Malignant neoplasm of unspecified site of unspecified male breast

ICD-10-CM Code:
C50.929
ICD-10 Code for:
Malignant neoplasm of unsp site of unspecified male breast
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Neoplasms
    (C00–D49)
    • Malignant neoplasms of breast
      (C50)
      • Malignant neoplasm of breast
        (C50)

C50.929 is a billable diagnosis code used to specify a medical diagnosis of malignant neoplasm of unspecified site of unspecified male breast. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

This code is applicable to male patients only. It is clinically and virtually impossible to use this code on a non-male patient.

Unspecified diagnosis codes like C50.929 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.

Approximate Synonyms

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

  • Adenocarcinoma of breast
  • Blood/lymphatic vessel invasion by tumor absent
  • Blood/lymphatic vessel invasion by tumor indeterminate
  • Blood/lymphatic vessel invasion by tumor present
  • Carcinoma of bone, connective tissue, skin and breast
  • Carcinoma of breast
  • Carcinoma of male breast
  • Carcinoma of salivary gland type of breast
  • Eccrine ductal carcinoma
  • Familial cancer of breast
  • Germline BRCA-mutated, HER2-negative metastatic breast cancer
  • HER2-positive carcinoma of breast
  • Hormone receptor negative neoplasm
  • Hormone receptor positive malignant neoplasm of breast
  • Hormone receptor positive tumor
  • Human epidermal growth factor 2 negative carcinoma of breast
  • Human epidermal growth factor 2 negative carcinoma of breast
  • Infiltrating ductal carcinoma of breast, stage 1
  • Infiltrating ductal carcinoma of breast, stage 2
  • Infiltrating ductal carcinoma of breast, stage 3
  • Infiltrating ductal carcinoma of breast, stage 4
  • Infiltrating lobular carcinoma of breast
  • Infiltrating lobular carcinoma of breast
  • Inflammatory carcinoma of breast
  • Invasive carcinoma of breast
  • Local recurrence of malignant tumor of breast
  • Locally advanced breast cancer
  • Malignant melanoma of breast
  • Malignant neoplasm of bone, connective tissue, skin and breast
  • Malignant neoplasm of bone, connective tissue, skin and breast
  • Malignant neoplasm of ectopic site of male breast
  • Malignant neoplasm of male breast
  • Malignant phyllodes tumor of breast
  • Malignant tumor of breast
  • Metaplastic carcinoma of breast
  • Metastatic human epidermal growth factor 2 positive carcinoma of breast
  • Metastatic lobular carcinoma to breast
  • Mixed ductal and lobular carcinoma of breast
  • Mucinous carcinoma of breast
  • Neoplasm of ectopic male breast tissue
  • Neoplasm of ectopic male breast tissue
  • Phyllodes tumor of breast
  • Phyllodes tumor of breast
  • Primary angiosarcoma of breast
  • Primary angiosarcoma of thorax
  • Primary angiosarcoma of trunk
  • Primary carcinoma of male breast
  • Primary infiltrating duct carcinoma of breast
  • Primary infiltrating lobular carcinoma of breast
  • Primary intracystic papillary carcinoma of breast
  • Primary invasive pleomorphic lobular carcinoma of breast
  • Primary malignant neoplasm of breast
  • Primary malignant neoplasm of ectopic male breast tissue
  • Primary malignant neoplasm of male breast
  • Primary malignant phyllodes tumor of breast
  • Primary mixed ductal and lobular carcinoma of breast
  • Primary mucinous carcinoma of breast
  • Primary scirrhous carcinoma of breast
  • Primary solid papillary carcinoma with invasion of breast
  • Sarcoma of breast
  • Sarcoma of breast
  • Sarcoma of male breast
  • Scirrhous carcinoma of breast
  • Triple-negative breast cancer

Clinical Classification

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:

  • Diagnoses for males only - The Medicare Code Editor detects inconsistencies between a patient’s sex and any diagnosis on the patient’s record, these edits apply to MALES only .

Convert C50.929 to ICD-9-CM

  • ICD-9-CM Code: 175.9 - Mal neo male breast NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Male Breast Cancer

Although breast cancer is much more common in women, men can get it too. It happens most often to men between the ages of 60 and 70.

Breast lumps usually aren't cancer. However, most men with breast cancer have lumps. Other breast symptoms can include:

  • Dimpled or puckered skin
  • A red, scaly nipple or skin
  • Fluid discharge

Risk factors for male breast cancer include exposure to radiation, a family history of breast cancer, and having high estrogen levels, which can happen with diseases like cirrhosis or Klinefelter syndrome.

Treatment for male breast cancer is usually a mastectomy, which is surgery to remove the breast. Other treatments include radiation, chemotherapy and/or hormone therapy.

NIH: National Cancer Institute


[Learn More in MedlinePlus]

Breast cancer

Breast cancer is a disease in which certain cells in the breast become abnormal and multiply uncontrollably to form a tumor. Although breast cancer is much more common in women, this form of cancer can also develop in men. In both women and men, the most common form of breast cancer begins in cells lining the milk ducts (ductal cancer). In women, cancer can also develop in the glands that produce milk (lobular cancer). Most men have little or no lobular tissue, so lobular cancer in men is very rare.

In its early stages, breast cancer usually does not cause pain and may exhibit no noticeable symptoms. As the cancer progresses, signs and symptoms can include a lump or thickening in or near the breast; a change in the size or shape of the breast; nipple discharge, tenderness, or retraction (turning inward); and skin irritation, dimpling, redness, or scaliness. However, these changes can occur as part of many different conditions. Having one or more of these symptoms does not mean that a person definitely has breast cancer.

In some cases, cancerous cells can invade surrounding breast tissue. In these cases, the condition is known as invasive breast cancer. Sometimes, tumors spread to other parts of the body. If breast cancer spreads, cancerous cells most often appear in the bones, liver, lungs, or brain. Tumors that begin at one site and then spread to other areas of the body are called metastatic cancers.

A small percentage of all breast cancers cluster in families. These cancers are described as hereditary and are associated with inherited gene mutations. Hereditary breast cancers tend to develop earlier in life than noninherited (sporadic) cases, and new (primary) tumors are more likely to develop in both breasts.


[Learn More in MedlinePlus]

Male Breast Cancer Treatment (PDQ®)

Learn about male breast cancer risk factors, symptoms, tests to diagnose, factors affecting prognosis, staging, and treatment.
[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • 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
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.