Table 3. Conditional Probability of Evidence of Exfoliation Syndrome in Each Area of the Electronic Health Record (EHR).
| EHR Area | No. of Patients With ≥1 Record of XFS | ICD-9 Evidence, % | ICD-10 Evidence, %a | Problem List Evidence, % | Iris and Lens Examination Data Evidence, % | NLP Evidence, % |
|---|---|---|---|---|---|---|
| ICD-9 | 491 | NA | 28 | 100 | 87 | 86 |
| ICD-10 | 226 | 63 | NA | 100 | 92 | 96 |
| Problem list | 610 | 81 | 37 | NA | 87 | 87 |
| Iris and lens examination data | 1216 | 38 | 18 | 47 | NA | 70 |
| NLP | 1205 | 40 | 20 | 50 | 75 | NA |
Abbreviations: ICD, International Classification of Diseases; NA, not applicable; NLP, natural language processing; XFS, exfoliation syndrome.
a
Because ICD-10 codes were not used prior to 2015, persons who received all of their care during 2012-2015 would not have received an ICD-10 code.