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ICD-10 C50 - Malignant neoplasm of breast
Chapter 2 Section C50

C50

ICD-10 Not billable

Malignant neoplasm of breast

Use additional code: code to identify estrogen receptor status (Z17.0, Z17.1)
Specifically for this code:
  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple
Specifically for this code:
  • skin of breast (C44.501, C44.511, C44.521, C44.591)
From Chapter 2:
  • 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).
C50 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
C50.0
Malignant neoplasm of nipple and areola
10
C50.1
Malignant neoplasm of central portion of breast
10
C50.2
Malignant neoplasm of upper-inner quadrant of breast
10
C50.3
Malignant neoplasm of lower-inner quadrant of breast
10
C50.4
Malignant neoplasm of upper-outer quadrant of breast
10
C50.5
Malignant neoplasm of lower-outer quadrant of breast
10
C50.6
Malignant neoplasm of axillary tail of breast
10
C50.8
Malignant neoplasm of overlapping sites of breast
10
C50.9
Malignant neoplasm of breast of unspecified site
      
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