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

2018 ICD-10-CM Diagnosis Code C50.912

Malignant neoplasm of unspecified site of left female breast

2016

2017

2018

Billable/Specific Code

Female Dx

C50.912 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2018 edition of ICD-10-CM C50.912 became effective on October 1, 2017.
This is the American ICD-10-CM version of C50.912 - other international versions of ICD-10 C50.912 may differ.

ICD-10-CM Coding Rules

C50.912 is applicable to female patients.

The following code(s) above C50.912 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 C50.912:

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
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

Angiosarcoma of bilateral female breasts
Angiosarcoma of left female breast
Bilateral female breast sarcoma
Cancer, female breast, left breast
Female breast angiosarcoma, bilateral breasts
Female breast angiosarcoma, left breast
Female breast cancer, bilateral breasts
Female breast infiltrating ductal carcinoma, bilateral breasts
Female breast infiltrating ductal carcinoma, l breast
Female breast infiltrating lobular carcinoma, bilateral breasts
Female breast infiltrating lobular carcinoma, l breast
Infiltrating duct carcinoma of left female breast
Infiltrating ductal carcinoma of bilateral female breasts
Infiltrating ductal carcinoma of left female breast
Infiltrating lobular carcinoma of bilateral female breasts
Infiltrating lobular carcinoma of left female breast
Left female breast sarcoma
Malignant phyllodes tumor of bilateral female breasts
Malignant phyllodes tumor of left female breast
Phyllodes tumor, malignant, female bilat breasts
Phyllodes tumor, malignant, female left breast
Primary malignant neoplasm of bilateral female breasts
Primary malignant neoplasm of female left breast
Recurrent female breast cancer, bilateral breasts
Recurrent female breast cancer, l breast
Recurrent primary malignant neoplasm of bilateral female breasts
Recurrent primary malignant neoplasm of left female breast
Sarcoma of bilateral female breasts
Sarcoma of left female breast

ICD-10-CM C50.912 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

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 C50.912 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

ICD-10-CM Codes Adjacent To C50.912

C50.811 Malignant neoplasm of overlapping sites of right female breast

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

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

2018 ICD-10-CM Diagnosis Code C50.912

Malignant neoplasm of unspecified site of left female breast

Neoplasms

Malignant neoplasm of breast