Adopting Thai Diagnosis Related Group for Vietnam Universal Health Coverage: A Case of Ba Vi District Hospital
Authors: Pham Le Tuan, M.D., Ph.D., Vu Thanh Nam, M.D., MIT., Tham Chi Dung, M.D., Ph.D., Cao Ngoc Anh, MBA.,Nguyen Thi Huong, M.D., MPH., Nguyen Nam Lien, MBA., Chairoj Zungsontiporn, M.D., Orathai Khioacharoen, Ph.D.,Supasit Pannarunothai, M.D., Ph.D.
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Objective: This study aimed to classify all hospital discharges covered by health insurance system into diagnosis
related group (DRG) to guide provider payment reforms of universal health coverage roadmap in Vietnam.
Methods: Data from Ba Vi hospital from January to December 2012 were grouped into DRGs by Viet-DRG
grouper version 1.0 developed based on Thai-DRG version 5 methodologies. The Pearson correlation (r) was used
to assess the performance of Viet-DRG grouper as against Thai-DRG grouper. A 5-step trimming of individual
inpatient data to achieve the highest correlations was performed.
Results: Data of 12,220 inpatient cases were analyzed by both groupers, 84.4% of total cases were classified into
89 DRGs. The five most common DRGs were vaginal delivery without complicating diagnosis (14500); Respiratory
infection/inflammation, no complication and comorbidity (04520); Otitis media and URI, no complication
and comorbidity (03530); Viral illness except dengue, child, no complication and comorbidity (18610); Bronchitis
and asthma, no complication and comorbidity (04590). The performance of Viet-DRG grouper v1.0 compared
with Thai-DRG grouper v5.0 for 89 DRGs in terms of relative weights as of 0.4 and length of stay as of 0.5.
Conclusion: Validity of the first Viet-DRG was at moderate level compared to Thai-DRG due to the limitation
of data availability and quality at the hospital.