Relationship Between Diabetes Codes That Affect Medicare Reimbursement (Tier Comorbidities) and Outcomes in Stroke Rehabilitation

James E. Graham, Cynthia M. Ripsin, Anne Deutsch, Yong Fang Kuo, Sam Markello, Carl V. Granger, Kenneth Ottenbacher

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Graham JE, Ripsin CM, Deutsch A, Kuo Y-F, Markello S, Granger CV, Ottenbacher KJ. Relationship between diabetes codes that affect Medicare reimbursement (tier comorbidities) and outcomes in stroke rehabilitation. Objectives: To examine the extent to which diabetes codes that increase reimbursement (tier comorbidities) under the prospective payment system are related to length of stay and functional outcomes in stroke rehabilitation. Design: Secondary data analysis. Setting: Inpatient rehabilitation facilities (N=864) across the United States. Participants: Patients (N=135,097) who received medical rehabilitation for stroke in 2002-2003. Intervention: None. Main Outcome Measures: Length of stay, FIM instrument, and discharge setting. Diabetes status was assigned to 1 of 3 categories: tier (increases reimbursement), nontier (no reimbursement effect), and no diabetes. Results: Mean ± standard deviation age of the sample was 70.4±13.4 years, and 31% had diabetes (6% tier, 25% nontier). Diabetes status by age demonstrated significant (P<.05) interaction effects, which lead to the following age-specific findings. In younger stroke patients (60y), tier diabetes was associated with shorter lengths of stay compared with both groups, lower FIM discharge scores compared with both groups, and lower odds of discharge home relative to the no-diabetes group. In older stroke patients (80y), tier diabetes was associated with longer lengths of stay compared with both groups and with higher FIM discharge scores compared with the nontier group. Conclusions: The diabetes-related conditions identified as tier comorbidities under the prospective payment system are significant predictors of stroke rehabilitation outcomes, but these relationships are moderated by patient age.

Original languageEnglish (US)
Pages (from-to)1110-1116
Number of pages7
JournalArchives of Physical Medicine and Rehabilitation
Volume90
Issue number7
DOIs
StatePublished - Jul 2009

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Medicare
Comorbidity
Length of Stay
Prospective Payment System
Stroke
Inpatients
Rehabilitation
Outcome Assessment (Health Care)
Stroke Rehabilitation

Keywords

  • Diabetes mellitus
  • Prospective payment system
  • Rehabilitation
  • Stroke

ASJC Scopus subject areas

  • Rehabilitation
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Relationship Between Diabetes Codes That Affect Medicare Reimbursement (Tier Comorbidities) and Outcomes in Stroke Rehabilitation. / Graham, James E.; Ripsin, Cynthia M.; Deutsch, Anne; Kuo, Yong Fang; Markello, Sam; Granger, Carl V.; Ottenbacher, Kenneth.

In: Archives of Physical Medicine and Rehabilitation, Vol. 90, No. 7, 07.2009, p. 1110-1116.

Research output: Contribution to journalArticle

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abstract = "Graham JE, Ripsin CM, Deutsch A, Kuo Y-F, Markello S, Granger CV, Ottenbacher KJ. Relationship between diabetes codes that affect Medicare reimbursement (tier comorbidities) and outcomes in stroke rehabilitation. Objectives: To examine the extent to which diabetes codes that increase reimbursement (tier comorbidities) under the prospective payment system are related to length of stay and functional outcomes in stroke rehabilitation. Design: Secondary data analysis. Setting: Inpatient rehabilitation facilities (N=864) across the United States. Participants: Patients (N=135,097) who received medical rehabilitation for stroke in 2002-2003. Intervention: None. Main Outcome Measures: Length of stay, FIM instrument, and discharge setting. Diabetes status was assigned to 1 of 3 categories: tier (increases reimbursement), nontier (no reimbursement effect), and no diabetes. Results: Mean ± standard deviation age of the sample was 70.4±13.4 years, and 31{\%} had diabetes (6{\%} tier, 25{\%} nontier). Diabetes status by age demonstrated significant (P<.05) interaction effects, which lead to the following age-specific findings. In younger stroke patients (60y), tier diabetes was associated with shorter lengths of stay compared with both groups, lower FIM discharge scores compared with both groups, and lower odds of discharge home relative to the no-diabetes group. In older stroke patients (80y), tier diabetes was associated with longer lengths of stay compared with both groups and with higher FIM discharge scores compared with the nontier group. Conclusions: The diabetes-related conditions identified as tier comorbidities under the prospective payment system are significant predictors of stroke rehabilitation outcomes, but these relationships are moderated by patient age.",
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