C50.31 Malignant neoplasm of lower-inner quadrant of breast, female

Non-billable header with 3 child codes.

Applies from C50 Malignant neoplasm of breast

Includes

• connective tissue of breast
• Paget's disease of breast
• Paget's disease of nipple

Excludes1 (never code together)

• skin of breast (C44.501, C44.511, C44.521, C44.591)

Use additional code

• code to identify estrogen, and other hormones and factors receptor status (Z17.-)

Codes under C50.31

• C50.311 Malignant neoplasm of lower-inner quadrant of right female breast
• C50.312 Malignant neoplasm of lower-inner quadrant of left female breast
• C50.319 Malignant neoplasm of lower-inner quadrant of unspecified female breast

Code annotations containing back-references to C50.31

Back-references to C50

• Type 1 Excludes: C49 Malignant neoplasm of other connective and soft tissue ("malignant neoplasm of connective tissue of breast (C50.-)")
• Type 1 Excludes: C49.3 Malignant neoplasm of connective and soft tissue of thorax ("malignant neoplasm of breast (C50.-)")
• Type 1 Excludes: D05 Carcinoma in situ of breast ("Paget's disease of breast or nipple (C50.-)")
• Type 2 Excludes: D05 Carcinoma in situ of breast ("malignant neoplasm of breast (C50.-)")
• Code Also: D61.82 Myelophthisis ("malignant neoplasm of breast (C50.-)")
• Code First: D75.81 Myelofibrosis ("malignant neoplasm of breast (C50.-)")
• Code First: Z17 Estrogen, and other hormones and factors receptor status ("malignant neoplasm of breast (C50.-)")
• Code First: Z79.81 Long term (current) use of agents affecting estrogen receptors and estrogen levels ("malignant neoplasm of breast (C50.-)")
• Code Also: Z91.B Personal risk factor of exposure to diethylstilbestrol ("conditions classifiable to C50.-")

Nearby codes

• C50.22 Malignant neoplasm of upper-inner quadrant of breast, male
• C50.221 Malignant neoplasm of upper-inner quadrant of right male breast
• C50.222 Malignant neoplasm of upper-inner quadrant of left male breast
• C50.229 Malignant neoplasm of upper-inner quadrant of unspecified male breast
• C50.3 Malignant neoplasm of lower-inner quadrant of breast
• C50.31 Malignant neoplasm of lower-inner quadrant of breast, female (this code)
• C50.311 Malignant neoplasm of lower-inner quadrant of right female breast
• C50.312 Malignant neoplasm of lower-inner quadrant of left female breast
• C50.319 Malignant neoplasm of lower-inner quadrant of unspecified female breast
• C50.32 Malignant neoplasm of lower-inner quadrant of breast, male
• C50.321 Malignant neoplasm of lower-inner quadrant of right male breast