MS-DRG · FY 2026 v43.0

MS-DRG 173 – Ultrasound Accelerated and Other Thrombolysis with Principal Diagnosis Pulmonary Embolism

A Surgical DRG in MDC 04 (Diseases & Disorders of the Respiratory System). Inpatient cases group to DRG 173 when one of the 10 ICD-10-PCS operating-room procedures listed below is reported with a qualifying principal diagnosis. Its FY 2026 relative weight is 2.9764 with a geometric mean length of stay of 3.8 days.

Surgical DRG – assigned by operating-room procedure✓ Official CMS v43.0 dataset
2.9764
Relative Weight
3.8
Geometric Mean LOS (days)
4.6
Arithmetic Mean LOS (days)
13
Diagnosis Codes
10
Procedure Codes
How a case is assigned to DRG 173

The grouper first assigns the case to MDC 04 from the principal diagnosis, then matches a qualifying operating-room procedure from the ICD-10-PCS list below (this is a Surgical DRG).

ICD-10-PCS

Procedure Codes 10 codes · 5 categories

02FP Heart and Great Vessels, Fragmentation2 codes
  • 02FP3Z0 Fragmentation of Pulmonary Trunk, Percutaneous Approach, Ultrasonic
  • 02FP3ZZ Fragmentation of Pulmonary Trunk, Percutaneous Approach
02FQ Heart and Great Vessels, Fragmentation2 codes
  • 02FQ3Z0 Fragmentation of Right Pulmonary Artery, Percutaneous Approach, Ultrasonic
  • 02FQ3ZZ Fragmentation of Right Pulmonary Artery, Percutaneous Approach
02FR Heart and Great Vessels, Fragmentation2 codes
  • 02FR3Z0 Fragmentation of Left Pulmonary Artery, Percutaneous Approach, Ultrasonic
  • 02FR3ZZ Fragmentation of Left Pulmonary Artery, Percutaneous Approach
02FS Heart and Great Vessels, Fragmentation2 codes
  • 02FS3Z0 Fragmentation of Right Pulmonary Vein, Percutaneous Approach, Ultrasonic
  • 02FS3ZZ Fragmentation of Right Pulmonary Vein, Percutaneous Approach
02FT Heart and Great Vessels, Fragmentation2 codes
  • 02FT3Z0 Fragmentation of Left Pulmonary Vein, Percutaneous Approach, Ultrasonic
  • 02FT3ZZ Fragmentation of Left Pulmonary Vein, Percutaneous Approach
ICD-10-CM

Qualifying Diagnosis Codes 13 codes · 2 categories

13 of 13 shown
I26 Pulmonary embolism12 codes
  • I26.01 Septic pulmonary embolism with acute cor pulmonale
  • I26.02 Saddle embolus of pulmonary artery with acute cor pulmonale
  • I26.03 Cement embolism of pulmonary artery with acute cor pulmonale
  • I26.04 Fat embolism of pulmonary artery with acute cor pulmonale
  • I26.09 Other pulmonary embolism with acute cor pulmonale
  • I26.90 Septic pulmonary embolism without acute cor pulmonale
  • I26.92 Saddle embolus of pulmonary artery without acute cor pulmonale
  • I26.93 Single subsegmental thrombotic pulmonary embolism without acute cor pulmonale
  • I26.94 Multiple subsegmental thrombotic pulmonary emboli without acute cor pulmonale
  • I26.95 Cement embolism of pulmonary artery without acute cor pulmonale
  • I26.96 Fat embolism of pulmonary artery without acute cor pulmonale
  • I26.99 Other pulmonary embolism without acute cor pulmonale
I27 Other pulmonary heart diseases1 code
  • I27.82 Chronic pulmonary embolism

Frequently Asked Questions

What is MS-DRG 173?

MS-DRG 173 (Ultrasound Accelerated and Other Thrombolysis with Principal Diagnosis Pulmonary Embolism) is a surgical DRG in MDC 04 (Diseases & Disorders of the Respiratory System). Its FY 2026 relative weight is 2.9764 with a geometric mean length of stay of 3.8 days.

How many procedure codes group to DRG 173?

10 ICD-10-PCS operating-room procedure codes group to this DRG.

What is the relative weight of DRG 173?

The FY 2026 relative weight of this DRG is 2.9764, meaning reimbursement of roughly 2.98 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 168 – Other Respiratory System O.R. Procedures without CC/MCC
Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.