Evidence map›Paper›PMID 42351168›Full record

ArticleBMC nursing2026

Hidden nursing complexity within diagnosis-related groups (DRGs): a one-year retrospective study of standardized nursing diagnoses and actions among adult hospitalizations in Italy.

Antonello Cocchieri, Fabio D'Agostino, John Michael Welton, Mario Cesare Nurchis, Nursing and Public Health Group, Gianfranco Damiani, Manuele Cesare

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Article in BMC nursing, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

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4citing papers in PubMed
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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Antonello CocchieriA. Gemelli IRCCS University Hospital Foundation, Largo Agostino Gemelli 8, 00168, Rome, Italy. antonello.cocchieri@policlinicogemelli.it.ORCID http://orcid.org/0000-0002-7694-4986
Fabio D'AgostinoDepartment of Medicine, Saint Camillus International University of Health Sciences, Via di Sant'Alessandro 8, 00131, Rome, Italy.ORCID http://orcid.org/0000-0002-4641-604X
John Michael WeltonDivision of Health Systems, Leadership, and Informatics, University of Colorado College of Nursing, 13120 East 19th Avenue, Aurora, CO, 80045, USA.ORCID http://orcid.org/0000-0001-5467-1297
Mario Cesare NurchisSection of Hygiene, Department of Life Sciences and Public Health, Catholic University of the Sacred Heart, Largo Francesco Vito 1, 00168, Rome, Italy.ORCID http://orcid.org/0000-0002-9345-4292
Nursing and Public Health Group
Gianfranco DamianiSection of Hygiene, Department of Life Sciences and Public Health, Catholic University of the Sacred Heart, Largo Francesco Vito 1, 00168, Rome, Italy.ORCID http://orcid.org/0000-0003-3028-6188
Manuele CesareA. Gemelli IRCCS University Hospital Foundation, Largo Agostino Gemelli 8, 00168, Rome, Italy.ORCID http://orcid.org/0000-0003-2834-7594

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDiagnosis-related groups (DRGs) are used within prospective payment systems to classify hospitalizations and standardize reimbursement but may insufficiently capture nursing complexity. This study aimed to describe the variability in nursing complexity within the most prevalent DRGs among adult inpatients and to examine its relationship with DRG-specific length of stay thresholds and DRG weight.

methodsAdult hospitalizations discharged in 2022 from a large acute-care hospital in Rome, Italy, were analyzed. Nursing complexity was measured using counts of nursing diagnoses documented within 24 hours of admission and nursing actions recorded throughout hospitalization. Variability within and across DRGs was explored descriptively. Comparisons were conducted between hospitalizations within and exceeding DRG-specific length of stay thresholds. Linear regression models examined the proportion of variability in nursing complexity explained by DRG weight, both before and after adjustment for demographic and clinical variables.

resultsThe study included 14,169 hospitalizations across the 20 most frequent DRGs. Marked variability in nursing diagnoses and nursing actions was observed not only between DRGs but also within the same DRG, with counts ranging from 1 to 17 for nursing diagnoses and from 1 to 770 for nursing actions. Patients classified as medically similar under the same DRG exhibited substantial heterogeneity in nursing complexity. Hospitalizations exceeding DRG-specific length of stay thresholds showed consistently higher nursing complexity compared to those remaining within expected limits, both in terms of nursing diagnoses (mean 7.5, SD 4.3 vs. 4.0, SD 2.5; Welch's t(265.2) = -13.0, p < 0.001; Cohen's d = 1.0, 95% CI 0.9-1.1) and nursing actions (median 50, IQR 45 vs. 17, IQR 10; Mann-Whitney U = 311249, Z = -23.1, p < 0.001; r = 0.19). In univariable models, DRG weight showed modest associations with nursing diagnoses (β = 0.140, p < 0.001; R

conclusionsDRGs do not adequately capture nursing complexity. Integrating standardized nursing data into hospital resource utilization and risk-adjustment models may improve the visibility of nursing care and support more accurate resource allocation in hospital financing systems.

Indexed as

Diagnosis-related groupsDRGLength of stayOutliersProspective payment systemReimbursement mechanismsStandardized nursing terminology

Identifiers

PMID42351168
PMCPMC13332606

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