kodex

Kodex

ICD-10-CM
Section

C50

Malignant neoplasm of breast

Hierarchy

  • C00-D49 Neoplasms (C00-D49)
    • C00-C96 Malignant neoplasms (C00-C96)
      • C00-C75 Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue (C00-C75)
        • C50 Malignant neoplasm of breast
          • C50.0 Malignant neoplasm of nipple and areola
          • C50.1 Malignant neoplasm of central portion of breast
          • C50.2 Malignant neoplasm of upper-inner quadrant of breast
          • C50.3 Malignant neoplasm of lower-inner quadrant of breast
          • C50.4 Malignant neoplasm of upper-outer quadrant of breast
          • C50.5 Malignant neoplasm of lower-outer quadrant of breast
          • C50.6 Malignant neoplasm of axillary tail of breast
          • C50.8 Malignant neoplasm of overlapping sites of breast
          • C50.9 Malignant neoplasm of breast of unspecified site

Notes

C00-D49

  • Functional activity
  • All neoplasms are classified in this chapter, whether they are functionally active or not. An additional code from Chapter 4 may be used, to identify functional activity associated with any neoplasm.
  • Morphology [Histology]
  • Chapter 2 classifies neoplasms primarily by site (topography), with broad groupings for behavior, malignant, in situ, benign, etc. The Table of Neoplasms should be used to identify the correct topography code. In a few cases, such as for malignant melanoma and certain neuroendocrine tumors, the morphology (histologic type) is included in the category and codes.
  • Primary malignant neoplasms overlapping site boundaries
  • A primary malignant neoplasm that overlaps two or more contiguous (next to each other) sites should be classified to the subcategory/code .8 ('overlapping lesion'), unless the combination is specifically indexed elsewhere. For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned.
  • Malignant neoplasm of ectopic tissue
  • Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (C25.9).
    • C25.9 Malignant neoplasm of pancreas, unspecified

Use Additional

C50

  • code to identify estrogen receptor status (Z17.0, Z17.1)
    • Z17.0 Estrogen receptor positive status [ER+]
    • Z17.1 Estrogen receptor negative status [ER-]

Includes

C50

  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple

Excludes 1

C50

  • skin of breast (C44.501, C44.511, C44.521, C44.591)
    • C44.501 Unspecified malignant neoplasm of skin of breast
    • C44.511 Basal cell carcinoma of skin of breast
    • C44.521 Squamous cell carcinoma of skin of breast
    • C44.591 Other specified malignant neoplasm of skin of breast