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October 2021; 11 (5) Research

Impact of ICD-9 to ICD-10 Coding Transition on Prevalence Trends in Neurology

Ali G. Hamedani, Leah Blank, Dylan P. Thibault, Allison W. Willis
First published January 29, 2021, DOI: https://doi.org/10.1212/CPJ.0000000000001046
Ali G. Hamedani
Department of Neurology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AGH, DPT), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Departments of Neurology and Population Health Science and Policy (LB), Icahn School of Medicine at Mount Sinai, New York; and Departments of Neurology and of Biostatics and Epidemiology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AWW), Perelman School of Medicine, University of Pennsylvania, Philadelphia.
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Leah Blank
Department of Neurology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AGH, DPT), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Departments of Neurology and Population Health Science and Policy (LB), Icahn School of Medicine at Mount Sinai, New York; and Departments of Neurology and of Biostatics and Epidemiology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AWW), Perelman School of Medicine, University of Pennsylvania, Philadelphia.
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Dylan P. Thibault
Department of Neurology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AGH, DPT), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Departments of Neurology and Population Health Science and Policy (LB), Icahn School of Medicine at Mount Sinai, New York; and Departments of Neurology and of Biostatics and Epidemiology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AWW), Perelman School of Medicine, University of Pennsylvania, Philadelphia.
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Allison W. Willis
Department of Neurology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AGH, DPT), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Departments of Neurology and Population Health Science and Policy (LB), Icahn School of Medicine at Mount Sinai, New York; and Departments of Neurology and of Biostatics and Epidemiology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AWW), Perelman School of Medicine, University of Pennsylvania, Philadelphia.
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Citation
Impact of ICD-9 to ICD-10 Coding Transition on Prevalence Trends in Neurology
Ali G. Hamedani, Leah Blank, Dylan P. Thibault, Allison W. Willis
Neurol Clin Pract Oct 2021, 11 (5) e612-e619; DOI: 10.1212/CPJ.0000000000001046

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Article Information

vol. 11 no. 5 e612-e619
DOI: 
https://doi.org/10.1212/CPJ.0000000000001046

Published By: 
Wolters Kluwer Health, Inc. on behalf of the American Academy of Neurology
Print ISSN: 
2163-0402
Online ISSN: 
2163-0933
History: 
  • Received June 19, 2020
  • Accepted October 28, 2020
  • First Published January 29, 2021.

Article Versions

  • Previous version (January 29, 2021 - 12:45).
  • You are viewing the most recent version of this article.
Copyright & Usage: 
© 2021 American Academy of Neurology

Author Disclosures

    1. Ali G. Hamedani, MD, MHS,
    2. Leah Blank, MD, MPH,
    3. Dylan P. Thibault, MS and
    4. Allison W. Willis, MD, MSCI
  1. Ali G. Hamedani, MD, MHS,
  2. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. Editorial board member for CONTINUUM: Lifelong Learning in Neurology, 2017-2018

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NINDS T32 NS061779-10 (2018-2010)

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. Parkinson Study Group Mentored Clinical Research Award (2019-2020)

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  3. Leah Blank, MD, MPH,
  4. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. Pharmacoepidemiology Training Grant (T32-GM-075766)

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. (1) American Epilepsy Society / Epilepsy Foundation Junior Investigator Award (2) American Epilepsy Society/ New-onset refractory status epilepticus (NORSE) Foundation seed fund (3) Mirowski Family Fund

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. (1) Bristol Myers Squibb, spouse employed by a multinational law firm of whom BMS was a client in 2018- 2020.

  5. Dylan P. Thibault, MS and
  6. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. NONE

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other Activities:
    1. NONE

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. NONE

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  7. Allison W. Willis, MD, MSCI
  8. Scientific Advisory Boards:
    1. NONE

    Gifts:
    1. NONE

    Funding for Travel or Speaker Honoraria:
    1. NONE

    Editorial Boards:
    1. I have been an associate editor for the journal Pharmacoepidemiology and Drug Safety in August 2013.

    Patents:
    1. NONE

    Publishing Royalties:
    1. NONE

    Employment, Commercial Entity:
    1. NONE

    Consultancies:
    1. NONE

    Speakers' Bureaus:
    1. NONE

    Other activities:
    1. Commercial. I am a site-investigator for an international multicenter clinical trial of a investigational drug for the treatment of Parkinson disease

    Clinical Procedures or Imaging Studies:
    1. NONE

    Research Support, Commercial Entities:
    1. NONE

    Research Support, Government Entities:
    1. National Institutes of Health/NINDS, R01 ns099129 Principle Investigator, September 2017- present

    Research Support, Academic Entities:
    1. NONE

    Research Support, Foundations and Societies:
    1. NONE

    Stock/Stock Options/Board of Directors Compensation:
    1. NONE

    License Fee Payments, Technology or Inventions:
    1. NONE

    Royalty Payments, Technology or Inventions:
    1. NONE

    Stock/Stock Options, Research Sponsor:
    1. NONE

    Stock/Stock Options, Medical Equipment & Materials:
    1. NONE

    Legal Proceedings:
    1. NONE

  1. Department of Neurology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AGH, DPT), Perelman School of Medicine, University of Pennsylvania, Philadelphia; Departments of Neurology and Population Health Science and Policy (LB), Icahn School of Medicine at Mount Sinai, New York; and Departments of Neurology and of Biostatics and Epidemiology and Translational Center of Excellence for Neuroepidemiology and Neurology Outcomes Research (AWW), Perelman School of Medicine, University of Pennsylvania, Philadelphia.
  1. Correspondence
    Dr. Hamedani ali.hamedani{at}pennmedicine.upenn.edu
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