DRG 183

Medical DRG

Major Chest Trauma with MCC

TypeMedicalMDC04Dx Codes61

What is MS-DRG 183?

MS-DRG 183 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 04 (MDC 04) with a Major Complication or Comorbidity (MCC). It maps to 61 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 1.5299 with a geometric mean length of stay of 4.2 days and an arithmetic mean of 5.4 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.

Classification
Medical DRG
Diagnosis-driven grouping
Linked Codes
61 diagnosis
Billable Dx
100%
61 of 61 shown

FY 2026 Payment Data

Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).

Relative Weight
1.5299
Payment multiplier vs. average case (1.0)
Geometric Mean LOS
4.2 days
Used for transfer payment calculations
Arithmetic Mean LOS
5.4 days
Average length of stay
Post-Acute Transfer
No
Not subject to the transfer policy

Related MS-DRGs in This Severity Group

The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.

DRGTitleRel. WeightGMLOS
183Major Chest Trauma with MCCThis page1.52994.2 days
184Major Chest Trauma with CC1.06413.1 days
185Major Chest Trauma without CC/MCC0.78652.3 days

Linked ICD-10-CM Diagnosis Mappings

  • M96.A4

    Flail chest associated with chest compression and cardiopulmonary resuscitation

    BillableChapter 13
  • M99.18

    Subluxation complex (vertebral) of rib cage

    BillableChapter 13
  • S11.019S

    Unspecified open wound of larynx, sequela

    BillableChapter 19
  • S11.021S

    Laceration without foreign body of trachea, sequela

    BillableChapter 19
  • S11.022S

    Laceration with foreign body of trachea, sequela

    BillableChapter 19
  • S11.023S

    Puncture wound without foreign body of trachea, sequela

    BillableChapter 19
  • S11.024S

    Puncture wound with foreign body of trachea, sequela

    BillableChapter 19
  • S11.025S

    Open bite of trachea, sequela

    BillableChapter 19
  • S22.31XB

    Fracture of one rib, right side, initial encounter for open fracture

    BillableChapter 19
  • S22.32XB

    Fracture of one rib, left side, initial encounter for open fracture

    BillableChapter 19
  • S22.39XB

    Fracture of one rib, unspecified side, initial encounter for open fracture

    BillableChapter 19
  • S22.41XA

    Multiple fractures of ribs, right side, initial encounter for closed fracture

    BillableChapter 19
  • S22.41XB

    Multiple fractures of ribs, right side, initial encounter for open fracture

    BillableChapter 19
  • S22.42XA

    Multiple fractures of ribs, left side, initial encounter for closed fracture

    BillableChapter 19
  • S22.42XB

    Multiple fractures of ribs, left side, initial encounter for open fracture

    BillableChapter 19
  • S22.43XA

    Multiple fractures of ribs, bilateral, initial encounter for closed fracture

    BillableChapter 19
  • S22.43XB

    Multiple fractures of ribs, bilateral, initial encounter for open fracture

    BillableChapter 19
  • S22.49XA

    Multiple fractures of ribs, unspecified side, initial encounter for closed fracture

    BillableChapter 19
  • S22.49XB

    Multiple fractures of ribs, unspecified side, initial encounter for open fracture

    BillableChapter 19
  • S22.5XXA

    Flail chest, initial encounter for closed fracture

    BillableChapter 19
  • S22.5XXB

    Flail chest, initial encounter for open fracture

    BillableChapter 19
  • S27.331A

    Laceration of lung, unilateral, initial encounter

    BillableChapter 19
  • S27.332A

    Laceration of lung, bilateral, initial encounter

    BillableChapter 19
  • S27.339A

    Laceration of lung, unspecified, initial encounter

    BillableChapter 19
  • S27.401A

    Unspecified injury of bronchus, unilateral, initial encounter

    BillableChapter 19
  • S27.402A

    Unspecified injury of bronchus, bilateral, initial encounter

    BillableChapter 19
  • S27.409A

    Unspecified injury of bronchus, unspecified, initial encounter

    BillableChapter 19
  • S27.411A

    Primary blast injury of bronchus, unilateral, initial encounter

    BillableChapter 19
  • S27.412A

    Primary blast injury of bronchus, bilateral, initial encounter

    BillableChapter 19
  • S27.419A

    Primary blast injury of bronchus, unspecified, initial encounter

    BillableChapter 19
  • S27.421A

    Contusion of bronchus, unilateral, initial encounter

    BillableChapter 19
  • S27.422A

    Contusion of bronchus, bilateral, initial encounter

    BillableChapter 19
  • S27.429A

    Contusion of bronchus, unspecified, initial encounter

    BillableChapter 19
  • S27.431A

    Laceration of bronchus, unilateral, initial encounter

    BillableChapter 19
  • S27.432A

    Laceration of bronchus, bilateral, initial encounter

    BillableChapter 19
  • S27.439A

    Laceration of bronchus, unspecified, initial encounter

    BillableChapter 19
  • S27.491A

    Other injury of bronchus, unilateral, initial encounter

    BillableChapter 19
  • S27.492A

    Other injury of bronchus, bilateral, initial encounter

    BillableChapter 19
  • S27.499A

    Other injury of bronchus, unspecified, initial encounter

    BillableChapter 19
  • S27.802A

    Contusion of diaphragm, initial encounter

    BillableChapter 19
  • S27.803A

    Laceration of diaphragm, initial encounter

    BillableChapter 19
  • S27.808A

    Other injury of diaphragm, initial encounter

    BillableChapter 19
  • S27.809A

    Unspecified injury of diaphragm, initial encounter

    BillableChapter 19
  • S43.201A

    Unspecified subluxation of right sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.202A

    Unspecified subluxation of left sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.203A

    Unspecified subluxation of unspecified sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.204A

    Unspecified dislocation of right sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.205A

    Unspecified dislocation of left sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.206A

    Unspecified dislocation of unspecified sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.211A

    Anterior subluxation of right sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.212A

    Anterior subluxation of left sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.213A

    Anterior subluxation of unspecified sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.214A

    Anterior dislocation of right sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.215A

    Anterior dislocation of left sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.216A

    Anterior dislocation of unspecified sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.221A

    Posterior subluxation of right sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.222A

    Posterior subluxation of left sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.223A

    Posterior subluxation of unspecified sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.224A

    Posterior dislocation of right sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.225A

    Posterior dislocation of left sternoclavicular joint, initial encounter

    BillableChapter 19
  • S43.226A

    Posterior dislocation of unspecified sternoclavicular joint, initial encounter

    BillableChapter 19