C50.312Billable
Malignant neoplasm of lower-inner quadrant of left female breast
Short description: Malig neoplasm of lower-inner quadrant of left female breast
- Chapter
- 2. Neoplasms
- Category
- C50
- Effective date
- October 1, 2026
Related codes in category C50
C50Malignant neoplasm of breastC50.0Malignant neoplasm of nipple and areolaC50.01Malignant neoplasm of nipple and areola, femaleC50.011Malignant neoplasm of nipple and areola, right female breastYesC50.012Malignant neoplasm of nipple and areola, left female breastYesC50.019Malignant neoplasm of nipple and areola, unsp female breastYesC50.02Malignant neoplasm of nipple and areola, maleC50.021Malignant neoplasm of nipple and areola, right male breastYesC50.022Malignant neoplasm of nipple and areola, left male breastYesC50.029Malignant neoplasm of nipple and areola, unsp male breastYesC50.1Malignant neoplasm of central portion of breastC50.11Malignant neoplasm of central portion of breast, female
Frequently asked questions
What is ICD-10 code C50.312?
C50.312 is an ICD-10-CM diagnosis code for Malignant neoplasm of lower-inner quadrant of left female breast.
Is C50.312 a billable code?
Yes. C50.312 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is C50.312 in?
C50.312 falls under Chapter 2: Neoplasms.
When did C50.312 become effective?
C50.312 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to C50.312?
C50.312 belongs to category C50, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.