Grid: How Variance in the Use of Grouper Software Affects 20% Add-On Payment

To see how various grouper software vendors applied the 20% add-on to inpatients with COVID-19 infections, Deborah Gardner-Brown, founder of Sepsis Integrity Review Services in New Jersey, modeled several “COVID-serious admissions” with different versions. She found the groupers weren’t applied consistently, which affects payment (see story, p. 1).[1] The codes at the bottom of the chart propagate these DRGs, she said. Contact Gardner-Brown at deborah@rra-inc.com.

DRG Analysis By Grouper Version

DRG

Description

Relative intensity weight (RIW)

Version 37.0

October 1, 2019 thru

September 30, 2020

with/without add-on

RIW

Version 38.0

October 1, 2020 thru

September, 2021 with fed add-on

RIW

Version 38.1(p)

January 1, 2021 thru September 30, 2021 w/o fed add-on

AMLOS

003

ECMO OR TRACHEOSTOMY WITH MV >96 HOURS OR PRINCIPAL DIAGNOSIS EXCEPT FACE, MOUTH AND NECK WITH MAJOR O.R. PROCEDURE

22.7447/18.9539

$282,509.00/$263,059.00

22.7893

$287,250.00

18.9911/

$239,374.00/

30.2

004

ECMO OR TRACHEOSTOMY WITH MV >96 HOURS OR PRINCIPAL DIAGNOSIS EXCEPT FACE, MOUTH AND NECK WITHOUT MAJOR O.R. PROCEDURES

13.8526/11.5438

$173,551.00/$145,261.00

14.2344

$179,418.00

11.8620/

$149,515.00/

24.5

177

Respiratory infections and inflammation with MCC

(U07.1)

2.2694/1.8912

$31,619.00/$26,984.00

2.2144

$27,911.00

1.8453/

$23,259.00/

6.8

189

Pulmonary edema and respiratory failure

1.4588/1.2157

$21,686.00/$18,701.00

1.4698

$18,525.00

1.2248/

$15,438.00/

4.6

193

Simple pneumonia and pleurisy with MCC (J12.82)

1.6002/1.3335

$23,481.00/$20,150.00

1.5728

$19,825.00

1.3107/

$16,520.00/

5.1

871

SEPTICEMIA OR SEVERE SEPSIS WITHOUT MV >96 HOURS WITH MCC

2.2396/1.8663

$31,252.00/$26,679.00

2.2418

$28,257.00

1.8682/

$23,547.00/

6.2

870

SEPTICEMIA OR SEVERE SEPSIS WITH MV >96 HOURS

7.5892/6.3243

$96,803.00/$116,163.00

7.7098

$97,178.00

6.4248/

$80,981.00/

14.5

280

ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITH MCC

1.9571/1.6309

$27,791.00/$23,794.00

1.9514

$24,597.00

1.6262/

$20,497.00/

5.4

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