MS-DRG 055: NERVOUS SYSTEM NEOPLASMS WITHOUT MCC
MS-DRG 055 is nervous system neoplasms without mcc, in MDC 01 (a medical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 1.0296, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 2.90 days. 61 ICD-10-CM principal diagnoses group into MS-DRGs 054–055 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 1.0296
- Geometric mean LOS
- 2.90
- Arithmetic mean LOS
- 3.90
- Post-acute transfer
- Yes
This DRG is subject to the post-acute care transfer policy: a discharge to a qualifying setting below the mean length of stay is paid per diem rather than in full.
Principal diagnoses that group to MS-DRGs 054–055
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 61 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 054–055 the case lands in. The 24 most-searched:
- C71.9Malignant neoplasm of brain, unspecified
- C79.31Secondary malignant neoplasm of brain
- D32.9Benign neoplasm of meninges, unspecified
- D32.0Benign neoplasm of cerebral meninges
- D49.6Neoplasm of unspecified behavior of brain
- D33.3Benign neoplasm of cranial nerves
- C71.1Malignant neoplasm of frontal lobe
- C71.2Malignant neoplasm of temporal lobe
- C79.49Secondary malignant neoplasm of other parts of nervous system
- D43.2Neoplasm of uncertain behavior of brain, unspecified
- C71.0Malignant neoplasm of cerebrum, except lobes and ventricles
- C71.3Malignant neoplasm of parietal lobe
- C71.6Malignant neoplasm of cerebellum
- C72.0Malignant neoplasm of spinal cord
- D33.2Benign neoplasm of brain, unspecified
- D44.7Neoplasm of uncertain behavior of aortic body and other paraganglia
- C70.0Malignant neoplasm of cerebral meninges
- C70.1Malignant neoplasm of spinal meninges
- C71.5Malignant neoplasm of cerebral ventricle
- C71.7Malignant neoplasm of brain stem
- C71.8Malignant neoplasm of overlapping sites of brain
- D33.0Benign neoplasm of brain, supratentorial
- D33.1Benign neoplasm of brain, infratentorial
- D33.4Benign neoplasm of spinal cord
37 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 055.
| 054 | NERVOUS SYSTEM NEOPLASMS WITH MCC | 1.5194 | +0.4898 |
| 055 | NERVOUS SYSTEM NEOPLASMS WITHOUT MCC | 1.0296 |
All FY2027 MS-DRGs · MDC 01