Table 2 Diagnostic Agreement Between Different Billing Code Algorithms and Encounter Review Gold Standard
From: Validation of use of billing codes for identifying telemedicine encounters in administrative data
Encounter Review Finding | Claims Algorithm | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
Any Telemedicine | GT or GQ present | 100% (−-) | 99.99% (99.98–99.99%) | 90.8% (86.1–94.0%) | 100% (−-) |
GT or GQ or 99444 present | 100% (−-) | 99.99% (99.98–99.99%) | 90.8% (86.1–94.0%) | 100% (−-) | |
Live Interactive Telemedicine | GT present | 100% (−-) | 99.93% (99.92–99.95%) | 51.4% (42.0–60.7%) | 100% (−-) |
GT present without GQ or 99444 | 100% (−-) | 99.99% (99.98–99.99%) | 84.8% (76.9–90.3%) | 100% (−-) | |
Store and Forward Telemedicine | GQ present | 36.5% (25.3–49.3%) | 100% (100–100%) | 99.1% (96.3–99.8%) | 99.96% (99.95–99.98) |
GQ or 99444 | 100% (−-) | 100% (100–100%) | 99.7% (98.6–99.9%) | 100% (−-) |