MS-DRG
MS-DRG 640: Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC
Electrolyte d/o + MCC
DRG
640
MDC
MDC 10: Endocrine, Nutritional, Metabolic
Severity
with MCC
Relative weight
1.4534
Avg LOS
4.4 days
Typical indications
- Severe hyperkalemia + AKI
Common denial patterns
- MCC validation
Appeal angles
Document MCC.
Context: how MS-DRGs work
MS-DRGs bundle hospital inpatient payment into a single amount per admission. Each DRG has a relative weight that multiplies the hospital's base rate to determine payment. 640 has relative weight 1.4534. Major Complication or Comorbidity (MCC) and Complication or Comorbidity (CC) secondary diagnoses can move a case to a higher-paying DRG within the same family.
Frequently asked questions
What is MS-DRG 640?
Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC. Electrolyte d/o + MCC.
What are typical indications?
Severe hyperkalemia + AKI.
Why are claims under this DRG denied?
MCC validation.
How do I appeal?
Document MCC.
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