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Observation and inpatient status: Clinical impact of the 2‐midnight rule
Author(s) -
Sheehy Ann M.,
Caponi Bartho,
Gangireddy Sreedevi,
Hamedani Azita G.,
Pothof Jeffrey J.,
Siegal Eric,
Graf Ben K.
Publication year - 2014
Publication title -
journal of hospital medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.128
H-Index - 65
eISSN - 1553-5606
pISSN - 1553-5592
DOI - 10.1002/jhm.2163
Subject(s) - medicine , medicaid , midnight , demographics , medical emergency , emergency medicine , family medicine , demography , health care , physics , astronomy , sociology , economics , economic growth
BACKGROUND In response to growing concern over frequency and duration of observation encounters, the Centers for Medicare and Medicaid Services enacted a rules change on October 1, 2013, classifying most hospital encounters of <2 midnights as observation, and those ≥2 midnights as inpatient. However, limited data exist to predict the impact of the new rule. OBJECTIVE To answer the following: (1) Will the rule reduce observation encounter frequency? (2) Are short‐stay (<2 midnights) inpatient encounters often misclassified observation encounters? (3) Do 2 midnights separate distinct clinical populations, making this rule logical? (4) Do nonclinical factors such as time of day of admission impact classification under the rule? DESIGN, SETTING AND PATIENTS Retrospective descriptive study of all observation and inpatient encounters initiated between January 1, 2012 and February 28, 2013 at a Midwestern academic medical center. MEASUREMENTS Demographics, insurance type, and characteristics of hospitalization were abstracted for each encounter. RESULTS Of 36,193 encounters, 4,769 (13.2%) were observation. Applying the new rules predicted a net loss of 14.9% inpatient stays; for Medicare only, a loss of 7.4%. Less than 2‐midnight inpatient and observation stays were different, sharing only 1 of 5 top International Classification of Diseases, 9th Revision (ICD‐9) codes, but for encounters classified as observation, 4 of 5 top ICD‐9 codes were the same across the length of stay. Observation encounters starting before 8:00 am less commonly spanned 2 midnights (13.6%) than later encounters (31.2%). CONCLUSIONS The 2‐midnight rule adds new challenges to observation and inpatient policy. These findings suggest a need for rules modification. Journal of Hospital Medicine 2014;9:203–209. © 2014 Society of Hospital Medicine

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