ICD-10-CM Codes
C00-D49 Neoplasms
C50-C50 Malignant neoplasms of breast
C50- Malignant neoplasm of breast

2019 ICD-10-CM Diagnosis Code C50.919

Malignant neoplasm of unspecified site of unspecified female breast

2016

2017

2018

2019

Billable/Specific Code

Female Dx

C50.919 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Short description: Malignant neoplasm of unsp site of unspecified female breast
The 2019 edition of ICD-10-CM C50.919 became effective on October 1, 2018.
This is the American ICD-10-CM version of C50.919 - other international versions of ICD-10 C50.919 may differ.

ICD-10-CM Coding Rules

C50.919 is applicable to female patients.

The following code(s) above C50.919 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 C50.919:

C00-D49
2019 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
C50
ICD-10-CM Diagnosis Code C50
Malignant neoplasm of breast
Includes
- connective tissue of breast
- Paget's disease of breast
- Paget's disease of nipple
Type 1 Excludes
- skin of breast (C44.501, C44.511, C44.521, C44.591)
Use Additional
- code to identify estrogen receptor status (Z17.0, Z17.1)
Malignant neoplasm of breast

Approximate Synonyms

Breast cancer
Breast cancer metastatic to lymph node
Cancer female breast malig cystosarcoma phyllodes
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
Female breast cancer metastatic to lymph node
Female breast cancer metastatic to unspecified site
Female breast cancer with metastasis to eye
Female inflammatory breast cancer
Infiltrating duct 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 ductal carcinoma of female breast, stage 1
Infiltrating ductal carcinoma of female breast, stage 2
Infiltrating ductal carcinoma of female breast, stage 3
Infiltrating ductal carcinoma of female breast, stage 4
Infiltrating lobular carcinoma of breast
Malignant neoplasm of female breast
Malignant phyllodes tumor of breast
Primary invasive malignant neoplasm of female breast
Primary malignant inflammatory neoplasm of female breast
Recurrent primary malignant neoplasm of breast
Secondary malignant neoplasm of eye from female breast
Secondary malignant neoplasm of lymph node from neoplasm of breast
Secondary malignant neoplasm of lymph node from neoplasm of female breast

ICD-10-CM C50.919 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):

582 Mastectomy for malignancy with cc/mcc
583 Mastectomy for malignancy without cc/mcc
597 Malignant breast disorders with mcc
598 Malignant breast disorders with cc
599 Malignant breast disorders without cc/mcc
600 Non-malignant breast disorders with cc/mcc
601 Non-malignant breast disorders without cc/mcc

Convert C50.919 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change

ICD-10-CM Codes Adjacent To C50.919

C50.812 Malignant neoplasm of overlapping sites of left female breast

C50.819 Malignant neoplasm of overlapping sites of unspecified female breast

C50.82 Malignant neoplasm of overlapping sites of breast, male

C50.821 Malignant neoplasm of overlapping sites of right male breast

C50.822 Malignant neoplasm of overlapping sites of left male breast

C50.829 Malignant neoplasm of overlapping sites of unspecified male breast

C50.9 Malignant neoplasm of breast of unspecified site

C50.91 Malignant neoplasm of breast of unspecified site, female

C50.911 Malignant neoplasm of unspecified site of right female breast

C50.912 Malignant neoplasm of unspecified site of left female breast

C50.919 Malignant neoplasm of unspecified site of unspecified female breast

C50.92 Malignant neoplasm of breast of unspecified site, male

C50.921 Malignant neoplasm of unspecified site of right male breast

C50.922 Malignant neoplasm of unspecified site of left male breast

C50.929 Malignant neoplasm of unspecified site of unspecified male breast

C51 Malignant neoplasm of vulva

C51.0 Malignant neoplasm of labium majus

C51.1 Malignant neoplasm of labium minus

C51.2 Malignant neoplasm of clitoris

C51.8 Malignant neoplasm of overlapping sites of vulva

C51.9 Malignant neoplasm of vulva, unspecified

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

2019 ICD-10-CM Diagnosis Code C50.919

Malignant neoplasm of unspecified site of unspecified female breast

Neoplasms

Malignant neoplasm of breast