Pneumonia Hospitalization Coding Changes Associated With Transition From the 9th to 10th Revision of International Classification of Diseases.
Ryan B SmitheeTiffanie M MarkusElizabeth SodaCarlos G GrijalvaWei XingNong ShangMarie R GriffinFernanda C LessaPublished in: Health services research and managerial epidemiology (2020)
The ICD-10-CM algorithm derived from a validated ICD-9-CM algorithm should not introduce substantial bias for evaluating pneumonia trends in children. However, changes in coding of pneumonia associated with COPD in adults warrant further study.