Sensitivity of ICD coding for sepsis in children-a population-based study.

Endrich, Olga; Triep, Karen; Schlapbach, Luregn J; Posfay-Barbe, Klara M; Heininger, Ulrich; Giannoni, Eric; Stocker, Martin; Niederer-Loher, Anita; Kahlert, Christian R; Natalucci, Giancarlo; Relly, Christa; Riedel, Thomas; Aebi, Christoph; Berger, Christoph; Agyeman, Philipp K A (2023). Sensitivity of ICD coding for sepsis in children-a population-based study. Intensive care medicine. Paediatric and neonatal, 1(1), p. 5. Springer 10.1007/s44253-023-00006-1

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BACKGROUND

International Classification of Diseases 10th edition (ICD-10) is widely used to describe the burden of disease.

AIM

To describe how well ICD-10 coding captures sepsis in children admitted to the hospital with blood culture-proven bacterial or fungal infection and systemic inflammatory response syndrome.

METHODS

Secondary analysis of a population-based, multicenter, prospective cohort study on children with blood culture-proven sepsis of nine tertiary pediatric hospitals in Switzerland. We compared the agreement of validated study data on sepsis criteria with ICD-10 coding abstraction obtained at the participating hospitals.

RESULTS

We analyzed 998 hospital admissions of children with blood culture-proven sepsis. The sensitivity of ICD-10 coding abstraction was 60% (95%-CI 57-63) for sepsis; 35% (95%-CI 31-39) for sepsis with organ dysfunction, using an explicit abstraction strategy; and 65% (95%-CI 61-69) using an implicit abstraction strategy. For septic shock, the sensitivity of ICD-10 coding abstraction was 43% (95%-CI 37-50). Agreement of ICD-10 coding abstraction with validated study data varied by the underlying infection type and disease severity (p < 0.05). The estimated national incidence of sepsis, inferred from ICD-10 coding abstraction, was 12.5 per 100,000 children (95%-CI 11.7-13.5) and 21.0 per 100,000 children (95%-CI 19.8-22.2) using validated study data.

CONCLUSIONS

In this population-based study, we found a poor representation of sepsis and sepsis with organ dysfunction by ICD-10 coding abstraction in children with blood culture-proven sepsis when compared against a prospective validated research dataset. Sepsis estimates in children based on ICD-10 coding may thus severely underestimate the true prevalence of the disease.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s44253-023-00006-1.

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