MS-DRG 023: CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR
MS-DRG 023 is craniotomy with major device implant or acute complex cns principal diagnosis with mcc or antineoplastic implant or epilepsy with neurostimulator, in MDC 01 (a surgical DRG), at the with-MCC (major complication or comorbidity) level. Its FY2027 relative weight is 5.7444, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 7.20 days. 311 ICD-10-CM principal diagnoses group into MS-DRGs 023–024 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 5.7444
- Geometric mean LOS
- 7.20
- Arithmetic mean LOS
- 10.10
- 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 023–024
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 311 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 023–024 the case lands in. The 24 most-searched:
- I63.9Cerebral infarction, unspecified
- I63.81Other cerebral infarction due to occlusion or stenosis of small artery
- I60.9Nontraumatic subarachnoid hemorrhage, unspecified
- I61.9Nontraumatic intracerebral hemorrhage, unspecified
- I63.89Other cerebral infarction
- G92.8Other toxic encephalopathy
- I62.9Nontraumatic intracranial hemorrhage, unspecified
- I63.511Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
- I61.0Nontraumatic intracerebral hemorrhage in hemisphere, subcortical
- I63.50Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery
- I63.512Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral artery
- G04.81Other encephalitis and encephalomyelitis
- G06.1Intraspinal abscess and granuloma
- G37.3Acute transverse myelitis in demyelinating disease of central nervous system
- I61.1Nontraumatic intracerebral hemorrhage in hemisphere, cortical
- I61.5Nontraumatic intracerebral hemorrhage, intraventricular
- I61.8Other nontraumatic intracerebral hemorrhage
- G04.90Encephalitis and encephalomyelitis, unspecified
- G06.0Intracranial abscess and granuloma
- G06.2Extradural and subdural abscess, unspecified
- I60.7Nontraumatic subarachnoid hemorrhage from unspecified intracranial artery
- I63.311Cerebral infarction due to thrombosis of right middle cerebral artery
- I63.40Cerebral infarction due to embolism of unspecified cerebral artery
287 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 023.
| 023 | CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR | 5.7444 | |
| 024 | CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC | 3.9708 | -1.7736 |
All FY2027 MS-DRGs · MDC 01