Diagnostic coding and medical rehabilitation length of stay: their relationship

Archives of Physical Medicine and Rehabilitation
M G StinemanS V Williams

Abstract

To determine if diagnostic information provided in the form of International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes improves rehabilitation length of stay (LOS) prediction when used in combination with the Functional Independence Measure-Function Related Groups (FIM-FRGs) classification system. Various models characterizing diagnostic information using ICD-9-CM codes were created that included individual ICD-9-CM codes and groupings of those codes by organ or etiology involved. Each method was evaluated using linear regression with the natural logarithm of LOS as the dependent variable. Separate validation data sets were held back to quantify the incremental effect of diagnosis when combined with the FIM-FRG classification system. Records from 252 rehabilitation facilities and hospital units across the nation. Analyses were undertaken using 82,646 records from patients discharged in 1992. The addition of ICD-9-CM diagnostic information to the FIM-FRG classification system increased the variance explained by a maximum of 1.9%, from 31.5% to 33.4%. Refinement of the FIM-FRGs to include ICD-9-CM diagnoses does not appear warranted on the basis of the small increase in the percentage of exp...Continue Reading

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Citations

May 29, 2004·International Journal of Rehabilitation Research. Internationale Zeitschrift Für Rehabilitationsforschung. Revue Internationale De Recherches De Réadaptation·Ladislav ValachSandra Signer
Mar 22, 2011·Disaster Medicine and Public Health Preparedness·Rocco CasagrandeC Norman Coleman
May 12, 2000·Archives of Physical Medicine and Rehabilitation·M DysonF C Allen
Jun 15, 2005·Archives of Physical Medicine and Rehabilitation·David K RyserErin D Bigler
Dec 5, 2006·Archives of Physical Medicine and Rehabilitation·Cherie L KunikTerri Kazanjian
Jul 7, 2017·American Journal of Physical Medicine & Rehabilitation·Wayne KhuuAngela Colantonio
Feb 20, 2019·Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova·N V LatyshevaE G Filatova
Aug 24, 2005·Medical Care·Carlo SaittoUNKNOWN Prospective Payment in Rehabilitation Collaborative Group
Sep 25, 2002·Infection Control and Hospital Epidemiology : the Official Journal of the Society of Hospital Epidemiologists of America·Farrin A ManianLynn Meyer
Aug 24, 2005·Medical Care·Carlo SaittoUNKNOWN Prospective Payment in Rehabilitation Collaborative Group
Jan 10, 2002·Archives of Physical Medicine and Rehabilitation·Rita K Bode, Allen W Heinemann

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