MS-DRG 056: DEGENERATIVE NERVOUS SYSTEM DISORDERS WITH MCC
MS-DRG 056 is degenerative nervous system disorders with mcc, in MDC 01 (a medical DRG), at the with-MCC (major complication or comorbidity) level. Its FY2027 relative weight is 2.2655, so a case here pays more than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 5.40 days. 369 ICD-10-CM principal diagnoses group into MS-DRGs 056–057 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 2.2655
- Geometric mean LOS
- 5.40
- Arithmetic mean LOS
- 8.50
- 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 056–057
From the CMS MS-DRG definitions manual’s principal-diagnosis index: 369 ICD-10-CM codes route here, and the CC/MCC status of the secondary diagnoses decides which of 056–057 the case lands in. The 24 most-searched:
- G30.9Alzheimer's disease, unspecified
- G31.84Mild cognitive impairment of uncertain or unknown etiology
- I69.351Hemiplegia and hemiparesis following cerebral infarction affecting right dominant side
- G20.A1Parkinson's disease without dyskinesia, without mention of fluctuations
- I69.354Hemiplegia and hemiparesis following cerebral infarction affecting left non-dominant side
- G30.1Alzheimer's disease with late onset
- G20.CParkinsonism, unspecified
- G31.1Senile degeneration of brain, not elsewhere classified
- G25.81Restless legs syndrome
- G30.0Alzheimer's disease with early onset
- G31.9Degenerative disease of nervous system, unspecified
- G81.91Hemiplegia, unspecified affecting right dominant side
- G81.94Hemiplegia, unspecified affecting left nondominant side
- I69.30Unspecified sequelae of cerebral infarction
- I69.398Other sequelae of cerebral infarction
- G12.21Amyotrophic lateral sclerosis
- G70.00Myasthenia gravis without (acute) exacerbation
- I69.320Aphasia following cerebral infarction
- I69.391Dysphagia following cerebral infarction
- G10Huntington's disease
- G20.B1Parkinson's disease with dyskinesia, without mention of fluctuations
- G20.B2Parkinson's disease with dyskinesia, with fluctuations
- G31.83Neurocognitive disorder with Lewy bodies
- G91.2(Idiopathic) normal pressure hydrocephalus
345 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 056.
| 056 | DEGENERATIVE NERVOUS SYSTEM DISORDERS WITH MCC | 2.2655 | |
| 057 | DEGENERATIVE NERVOUS SYSTEM DISORDERS WITHOUT MCC | 1.2838 | -0.9817 |
All FY2027 MS-DRGs · MDC 01