R: Classcodes for adverse events after knee and hip arthroplasty

ae {coder}

R Documentation

Classcodes for adverse events after knee and hip arthroplasty

Description

ICD-10 group names are prefixed by two letters as given by the references. Two groups (DB and DM) are split into two due to different conditions.

Usage

knee_ae

hip_ae

Format

Data frame with 3 columns:

group: Different types of adverse events (see reference section)
icd10: regular expressions identifying ICD-10 codes for each group
icd10_fracture: regular expressions for fracture patients. Essentially the same as regex but with some additional codes for group "DM1 other"
kva: regular expressions identifying KVA codes
condition: special conditions are used, see below.

An object of class classcodes (inherits from tbl_df, tbl, data.frame) with 7 rows and 5 columns.

Hip fractures

Adverse events (AE) codes for hip fractures are based on codes for elective cases but with some additional codes for DM 1 (N300, N308, N309 and N390).

Conditions

Special conditions apply to all categories. Those require non-standard modifications of the classcodes data prior to categorization.

hbdia1_hdia: TRUE if the code was given as any type of diagnose during hospital visit for index operation, or as main diagnose for later visits, otherwise FALSE
late_hdia: TRUE if the code was given as main diagnose at a later visit after the index operation, otherwise FALSE
post_op: TRUE if the code was given at a later visit after the index operation, otherwise FALSE

References

Magneli M, Unbeck M, Rogmark C, Rolfson O, Hommel A, Samuelsson B, et al. Validation of adverse events after hip arthroplasty: a Swedish multi-centre cohort study. BMJ Open. 2019 Mar 7;9(3):e023773.