Table 1.
Read codes for breast cancer used to define primary outcome
| Read code | Diagnosis |
|---|---|
| B34..00 | Malignant neoplasm of female breast |
| B34..11 | Ca female breast |
| B340.00 | Malignant neoplasm of nipple and areola of female breast |
| B340000 | Malignant neoplasm of nipple of female breast |
| B340100 | Malignant neoplasm of areola of female breast |
| B340z00 | Malignant neoplasm of nipple or areola of female breast NOS |
| B341.00 | Malignant neoplasm of central part of female breast |
| B342.00 | Malignant neoplasm of upper-inner quadrant of female breast |
| B343.00 | Malignant neoplasm of lower-inner quadrant of female breast |
| B344.00 | Malignant neoplasm of upper-outer quadrant of female breast |
| B345.00 | Malignant neoplasm of lower-outer quadrant of female breast |
| B346.00 | Malignant neoplasm of axillary tail of female breast |
| B347.00 | Malignant neoplasm, overlapping lesion of breast |
| B34y.00 | Malignant neoplasm of other site of female breast |
| B34y000 | Malignant neoplasm of ectopic site of female breast |
| B34yz00 | Malignant neoplasm of other site of female breast NOS |
| B34z.00 | Malignant neoplasm of female breast NOS |
| B83..00 | Carcinoma in situ of breast and genitourinary system |
| B830.00 | Carcinoma in situ of breast |
| B830000 | Lobular carcinoma in situ of breast |
| B830100 | Intraductal carcinoma in situ of breast |
| BB9..00 | [M] Ductal, lobular, and medullary neoplasms |
| BB90.00 | [M] Intraductal carcinoma, non-infiltrating NOS |
| BB91.00 | [M] Infiltrating duct carcinoma |
| BB91.11 | [M] Duct carcinoma NOS |
| BB91000 | [M] Intraductal papillary adenocarcinoma with invasion |
| BB91100 | [M] Infiltrating duct and lobular carcinoma |
| BB92.00 | [M] Comedocarcinoma, non-infiltrating |
| BB93.00 | [M] Comedocarcinoma NOS |
| BB94.00 | [M] Juvenile breast carcinoma |
| BB94.11 | [M] Secretory breast carcinoma |
| BB9B.00 | [M] Medullary carcinoma NOS |
| BB9B.11 | [M] C cell carcinoma |
| BB9C.00 | [M] Medullary carcinoma with amyloid stroma |
| BB9E.00 | [M] Lobular carcinoma in situ |
| BB9E000 | [M] Intraductal carcinoma and lobular carcinoma in situ |
| BB9F.00 | [M] Lobular carcinoma NOS |
| BB9G.00 | [M] Infiltrating ductular carcinoma |
| BB9H.00 | [M] Inflammatory carcinoma |
| BB9J.00 | [M] Paget’s disease, mammary |
| BB9J.11 | [M] Paget’s disease, breast |
| BB9K.00 | [M] Paget’s disease and infiltrating breast duct carcinoma |
| BB9K000 | [M] Paget’s disease and intraductal carcinoma of breast |
| BB9L.00 | [M] Paget’s disease, extramammary, excluding Paget’s disease bone |
| BB9M.00 | [M] Intracystic carcinoma NOS |
| BB9z.00 | [M] Ductal, lobular, or medullary neoplasm NOS |
M= morphology of neoplasms; NOS=not otherwise specified.