MS-DRG 583: MASTECTOMY FOR MALIGNANCY WITHOUT CC/MCC
MS-DRG 583 is mastectomy for malignancy without cc/mcc, in MDC 09 (a surgical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 1.8006, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 2.10 days. 74 ICD-10-CM principal diagnoses group into MS-DRGs 582–583 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 1.8006
- Geometric mean LOS
- 2.10
- Arithmetic mean LOS
- 2.80
- Post-acute transfer
- No
Principal diagnoses that group to MS-DRGs 582–583
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 74 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 582–583 the case lands in. The 24 most-searched:
- C50.911Malignant neoplasm of unspecified site of right female breast
- C50.912Malignant neoplasm of unspecified site of left female breast
- C50.919Malignant neoplasm of unspecified site of unspecified female breast
- C50.411Malignant neoplasm of upper-outer quadrant of right female breast
- C50.412Malignant neoplasm of upper-outer quadrant of left female breast
- C50.211Malignant neoplasm of upper-inner quadrant of right female breast
- C50.811Malignant neoplasm of overlapping sites of right female breast
- C50.812Malignant neoplasm of overlapping sites of left female breast
- D05.11Intraductal carcinoma in situ of right breast
- D05.12Intraductal carcinoma in situ of left breast
- C50.111Malignant neoplasm of central portion of right female breast
- C50.212Malignant neoplasm of upper-inner quadrant of left female breast
- C50.511Malignant neoplasm of lower-outer quadrant of right female breast
- C50.512Malignant neoplasm of lower-outer quadrant of left female breast
- C50.112Malignant neoplasm of central portion of left female breast
- C50.312Malignant neoplasm of lower-inner quadrant of left female breast
- C50.011Malignant neoplasm of nipple and areola, right female breast
- C50.311Malignant neoplasm of lower-inner quadrant of right female breast
- C79.81Secondary malignant neoplasm of breast
- C50.012Malignant neoplasm of nipple and areola, left female breast
- C50.A1Malignant inflammatory neoplasm of right breast
- C50.A2Malignant inflammatory neoplasm of left breast
- C79.2Secondary malignant neoplasm of skin
- D48.62Neoplasm of uncertain behavior of left breast
50 more codes group here. Open any code above for its full hierarchy, or check a whole claim in the free DRG calculator.
The severity splits
Same base DRG, split by whether a secondary diagnosis is a CC or MCC. The last column is the weight change from MS-DRG 583.
| 582 | MASTECTOMY FOR MALIGNANCY WITH CC/MCC | 1.8006 | 0.0000 |
| 583 | MASTECTOMY FOR MALIGNANCY WITHOUT CC/MCC | 1.8006 |
All FY2027 MS-DRGs · MDC 09