MS-DRG 185: MAJOR CHEST TRAUMA WITHOUT CC/MCC
MS-DRG 185 is major chest trauma without cc/mcc, in MDC 04 (a medical DRG), at the without-CC/MCC level. Its FY2027 relative weight is 0.7715, so a case here pays less than the average Medicare inpatient stay (weight 1.0), with a geometric mean length of stay of 2.20 days. 61 ICD-10-CM principal diagnoses group into MS-DRGs 183–185 under the CMS definitions manual; the most-searched are listed below.
FY2027 payment factors
- Relative weight
- 0.7715
- Geometric mean LOS
- 2.20
- Arithmetic mean LOS
- 2.60
- Post-acute transfer
- No
Principal diagnoses that group to MS-DRGs 183–185
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 183–185 the case lands in. The 24 most-searched:
- S22.41XAMultiple fractures of ribs, right side, initial encounter for closed fracture
- S22.42XAMultiple fractures of ribs, left side, initial encounter for closed fracture
- S22.49XAMultiple fractures of ribs, unspecified side, initial encounter for closed fracture
- M96.A4Flail chest associated with chest compression and cardiopulmonary resuscitation
- M99.18Subluxation complex (vertebral) of rib cage
- S11.021ALaceration without foreign body of trachea, initial encounter
- S11.022ALaceration with foreign body of trachea, initial encounter
- S11.023APuncture wound without foreign body of trachea, initial encounter
- S11.024APuncture wound with foreign body of trachea, initial encounter
- S11.025AOpen bite of trachea, initial encounter
- S11.029AUnspecified open wound of trachea, initial encounter
- S22.31XBFracture of one rib, right side, initial encounter for open fracture
- S22.32XBFracture of one rib, left side, initial encounter for open fracture
- S22.39XBFracture of one rib, unspecified side, initial encounter for open fracture
- S22.41XBMultiple fractures of ribs, right side, initial encounter for open fracture
- S22.42XBMultiple fractures of ribs, left side, initial encounter for open fracture
- S22.43XAMultiple fractures of ribs, bilateral, initial encounter for closed fracture
- S22.43XBMultiple fractures of ribs, bilateral, initial encounter for open fracture
- S22.49XBMultiple fractures of ribs, unspecified side, initial encounter for open fracture
- S22.5XXAFlail chest, initial encounter for closed fracture
- S22.5XXBFlail chest, initial encounter for open fracture
- S27.331ALaceration of lung, unilateral, initial encounter
- S27.332ALaceration of lung, bilateral, initial encounter
- S27.339ALaceration of lung, unspecified, initial encounter
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 185.
| 183 | MAJOR CHEST TRAUMA WITH MCC | 1.4903 | +0.7188 |
| 184 | MAJOR CHEST TRAUMA WITH CC | 1.0647 | +0.2932 |
| 185 | MAJOR CHEST TRAUMA WITHOUT CC/MCC | 0.7715 |
All FY2027 MS-DRGs · MDC 04