Specific code 2015 ICD-9-CM Diagnosis Code 174.9
Malignant neoplasm of breast (female), unspecified
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015
  • Female Only Dx

  • ICD-9-CM 174.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 174.9 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 174.9 converts approximately to:
  • 2015/16 ICD-10-CM C50.919 Malignant neoplasm of unspecified site of unspecified female breast
Approximate Synonyms
  • Breast cancer
  • Breast cancer metastatic to LN
  • Breast cancer metastatic to lymph node
  • CA female breast, infiltrating ductal
  • CA female breast, infiltrating ductal, stage 1
  • CA female breast, infiltrating ductal, stage 2
  • CA female breast, infiltrating lobular
  • CA of female breast
  • Cancer female breast malig cystosarcoma phyllodes
  • Cancer female breast, right breast
  • Cancer of the female breast
  • Cancer of the female breast, infiltrating ductal
  • Cancer of the female breast, infiltrating lobular
  • Cancer of the female breast, recurrent
  • Cancer, breast, invasive, female
  • Cancer, female breast, left breast
  • Female breast cancer
  • Female breast cancer metastatic to eye
  • Female breast cancer with metastasis to eye
  • Female breast cancer, L breast
  • Female breast cancer, left breast
  • Female breast cancer, R breast
  • Female breast cancer, right breast
  • Female breast infiltrating ductal carcinoma
  • Female breast infiltrating ductal carcinoma, bilat breasts
  • Female breast infiltrating ductal carcinoma, bilateral breasts
  • Female breast infiltrating ductal carcinoma, L breast
  • Female breast infiltrating ductal carcinoma, left breast
  • Female breast infiltrating ductal carcinoma, R breast
  • Female breast infiltrating ductal carcinoma, right breast
  • Female breast infiltrating ductal carcinoma, stage 1
  • Female breast infiltrating ductal carcinoma, stage 2
  • Female breast infiltrating ductal carcinoma, stage 3
  • Female breast infiltrating ductal carcinoma, stage 4
  • Female breast infiltrating lobular carcinoma
  • Female breast inflammatory cancer
  • Female inflammatory breast cancer
  • Infiltrating duct carcinoma of breast
  • Infiltrating ductal carcinoma of bilateral female breasts
  • 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 ductal carcinoma of left female breast
  • Infiltrating ductal carcinoma of right female breast
  • Infiltrating lobular carcinoma of breast
  • Invasive female breast cancer
  • Lobular carcinoma of breast
  • Malignant cystosarcoma phyllodes
  • Malignant neoplasm of female breast
  • Malignant phyllodes tumor of breast
  • Primary invasive malignant neoplasm of female breast
  • Primary malignant inflammatory neoplasm of female breast
  • Primary malignant neoplasm of female left breast
  • Primary malignant neoplasm of female right breast
  • Recurrent female breast cancer
  • Recurrent primary malignant neoplasm of breast
  • Secondary malignant neoplasm of eye from female breast
  • Secondary malignant neoplasm of lymph node from neoplasm of breast
Clinical Information
  • A primary or metastatic malignant neoplasm involving the breast. The vast majority of cases are carcinomas arising from the breast parenchyma or the nipple. Malignant breast neoplasms occur more frequently in females than in males
ICD-9-CM Coding Information
  • 174.9 is only applicable to female patients.
ICD-9-CM Volume 2 Index entries containing back-references to 174.9:
  • Adenocarcinoma (M8140/3) - see also Neoplasm, by site, malignant
    • duct (infiltrating) (M8500/3)
      • with Paget's disease (M8541/3) - see Neoplasm, breast, malignant
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
    • infiltrating duct (M8500/3)
      • with Paget's disease (M8541/3) - see Neoplasm, breast, malignant
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
    • inflammatory (M8530/3)
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
    • lobular (M8520/3)
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
  • Carcinoma (M8010/3) - see also Neoplasm, by site, malignant
    • duct (cell) (M8500/3)
      • with Paget's disease (M8541/3) - see Neoplasm, breast, malignant
      • infiltrating (M8500/3)
        • specified site - see Neoplasm, by site, malignant
        • unspecified site 174.9
    • infiltrating duct (M8500/3)
      • with Paget's disease (M8541/3) - see Neoplasm, breast, malignant
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
    • inflammatory (M8530/3)
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
    • lobular (infiltrating) (M8520/3)
      • noninfiltrating (M8520/3)
        • specified site - see Neoplasm, by site, in situ
        • unspecified site 233.0
      • specified site - see Neoplasm, by site, malignant
      • unspecified site 174.9
    • medullary (M8510/3)
      • with
        • amyloid stroma (M8511/3)
          • specified site - see Neoplasm, by site, malignant
          • unspecified site 193
        • lymphoid stroma (M8512/3)
          • specified site - see Neoplasm, by site, malignant
          • unspecified site 174.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 174.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.