2017/18 ICD-10-CM Diagnosis Code C50

Malignant neoplasm of breast

Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code to identify estrogen receptor status (
    ICD-10-CM Diagnosis Code Z17.0

    Estrogen receptor positive status [ER+]

      2016 2017 2018 Billable/Specific Code POA Exempt
    Z17.0
    ,
    ICD-10-CM Diagnosis Code Z17.1

    Estrogen receptor negative status [ER-]

      2016 2017 2018 Billable/Specific Code POA Exempt
    Z17.1
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as C50. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • skin of breast (
    ICD-10-CM Diagnosis Code C44.501

    Unspecified malignant neoplasm of skin of breast

      2016 2017 2018 Billable/Specific Code
    C44.501
    ,
    ICD-10-CM Diagnosis Code C44.511

    Basal cell carcinoma of skin of breast

      2016 2017 2018 Billable/Specific Code
    C44.511
    ,
    ICD-10-CM Diagnosis Code C44.521

    Squamous cell carcinoma of skin of breast

      2016 2017 2018 Billable/Specific Code
    C44.521
    ,
    ICD-10-CM Diagnosis Code C44.591

    Other specified malignant neoplasm of skin of breast

      2016 2017 2018 Billable/Specific Code
    C44.591
    )
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple
The following code(s) above C50 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to C50:
  • C00-D49
    2018 ICD-10-CM Range C00-D49

    Neoplasms

    Note
    • 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).
    Neoplasms
Clinical Information Code History
Code annotations containing back-references to C50:
ICD-10-CM Codes Adjacent To C50
C49.8 Malignant neoplasm of overlapping sites of connective and soft tissue
C49.9 Malignant neoplasm of connective and soft tissue, unspecified
C49.A Gastrointestinal stromal tumor
C49.A0 …… unspecified site
C49.A1 …… of esophagus
C49.A2 …… of stomach
C49.A3 …… of small intestine
C49.A4 …… of large intestine
C49.A5 …… of rectum
C49.A9 …… of other sites
C50 Malignant neoplasm of breast
C50.0 Malignant neoplasm of nipple and areola
C50.01 Malignant neoplasm of nipple and areola, female
C50.011 Malignant neoplasm of nipple and areola, right female breast
C50.012 Malignant neoplasm of nipple and areola, left female breast
C50.019 Malignant neoplasm of nipple and areola, unspecified female breast
C50.02 Malignant neoplasm of nipple and areola, male
C50.021 Malignant neoplasm of nipple and areola, right male breast
C50.022 Malignant neoplasm of nipple and areola, left male breast
C50.029 Malignant neoplasm of nipple and areola, unspecified male breast
C50.1 Malignant neoplasm of central portion of breast

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.