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

• 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

Code annotations containing back-references to C50.91

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.-")

Diagnosis Index entries for C50.91

• Adenocarcinoma › duct › infiltrating › unspecified site (female)
• Adenocarcinoma › infiltrating duct › unspecified site (female)
• Adenocarcinoma › inflammatory › unspecified site (female)
• Adenocarcinoma › intraductal › noninfiltrating › papillary › with invasion › unspecified site (female)
• Adenocarcinoma › intraductal › papillary › with invasion › unspecified site (female)
• Adenocarcinoma › lobular › unspecified site (female)
• Adenocarcinoma › papillary › intraductal (noninfiltrating) › with invasion › unspecified site (female)
• Cancer › breast
• Carcinoma (malignant) › duct (cell) › infiltrating › with lobular carcinoma (in situ) › unspecified site (female)
• Carcinoma (malignant) › duct (cell) › infiltrating › specified site › unspecified site (female)
• Carcinoma (malignant) › ductal › with lobular › unspecified site (female)
• Carcinoma (malignant) › ductular, infiltrating › unspecified site (female)
• Carcinoma (malignant) › infiltrating › duct › with lobular › unspecified site (female)
• Carcinoma (malignant) › infiltrating › duct › unspecified site (female)
• Carcinoma (malignant) › infiltrating › ductular › unspecified site (female)
• Carcinoma (malignant) › infiltrating › lobular › unspecified site (female)
• Carcinoma (malignant) › inflammatory › unspecified site (female)
• Carcinoma (malignant) › intraductal (noninfiltrating) › papillary › with invasion › unspecified site (female)
• Carcinoma (malignant) › lipid-rich (female)
• Carcinoma (malignant) › lobular (infiltrating) › with intraductal › unspecified site (female)
• Carcinoma (malignant) › lobular (infiltrating) › unspecified site (female)
• Carcinoma (malignant) › medullary › with › lymphoid stroma › unspecified site (female)
• Carcinoma (malignant) › papillary › intraductal (noninfiltrating) › with invasion › unspecified site (female)
• Carcinoma-in-situ › lobular › with › infiltrating duct › breast (female)
• Carcinoma-in-situ › lobular › with › infiltrating duct › unspecified site (female)
• Disease, diseased › breast › Paget's › female, unspecified side

Nearby codes

• 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 (this code)
• 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