Chiari malformation Type I surgery in pediatric patients. Part 1: validation of an ICD-9-CM code search algorithm

Journal of Neurosurgery. Pediatrics
Travis R LadnerDavid D Limbrick

Abstract

OBJECTIVE Administrative billing data may facilitate large-scale assessments of treatment outcomes for pediatric Chiari malformation Type I (CM-I). Validated International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) code algorithms for identifying CM-I surgery are critical prerequisites for such studies but are currently only available for adults. The objective of this study was to validate two ICD-9-CM code algorithms using hospital billing data to identify pediatric patients undergoing CM-I decompression surgery. METHODS The authors retrospectively analyzed the validity of two ICD-9-CM code algorithms for identifying pediatric CM-I decompression surgery performed at 3 academic medical centers between 2001 and 2013. Algorithm 1 included any discharge diagnosis code of 348.4 (CM-I), as well as a procedure code of 01.24 (cranial decompression) or 03.09 (spinal decompression or laminectomy). Algorithm 2 restricted this group to the subset of patients with a primary discharge diagnosis of 348.4. The positive predictive value (PPV) and sensitivity of each algorithm were calculated. RESULTS Among 625 first-time admissions identified by Algorithm 1, the overall PPV for CM-I decompression was 92%. Amon...Continue Reading

References

Feb 12, 1998·Annals of Internal Medicine·L I Iezzoni
Mar 21, 2008·Journal of Neurosurgery. Pediatrics·Tamara D SimonUNKNOWN Hydrocephalus Clinical Research Network
Jun 4, 2008·Medical Care·Carolyn De CosterHude Quan
Apr 8, 2010·JAMA : the Journal of the American Medical Association·Richard A DeyoJeffrey G Jarvik
Mar 3, 2011·Journal of Neurosurgery. Pediatrics·R Shane TubbsW Jerry Oakes
Aug 24, 2012·Neurology·Christine St Germaine-SmithNathalie Jette
Apr 30, 2014·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Amy LeeMatthew D Smyth
Nov 8, 2014·Journal of Neurosurgery·Jacob K GreenbergDavid D Limbrick

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Citations

Nov 1, 2016·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Aditya VedantamSandi K Lam
Sep 26, 2016·The Journal of Pediatrics·Sandi K LamI Wen Pan
Nov 12, 2016·Journal of Neurosurgery. Pediatrics·D Andrew WilkinsonCormac O Maher
Jun 11, 2020·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Aladine A ElsamadicyMichael DiLuna
Dec 12, 2018·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Melissa A LoPrestiSandi Lam

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