Table 1.
CLI prevalence and incidence
| Publication | Country/region | Data source (years) | Population details | Methods | CLI prevalence (N or %) | CLI incidence (annual unless stated) |
|---|---|---|---|---|---|---|
| Baser (2013)19 | United States | 100% Medicare inpatient/outpatient/denominator files (2007–2008) | US Medicare population | ICD-9 and CPT codes used to identify CLI cases | Using ICD-9 codes only: Total—0.23% Using ICD-9 and CPT codes Total—0.54% |
Using ICD-9 codes only: Total—0.20% Fontaine Stage III only—0.05% Fontaine Stage IV only—0.15% Using ICD-9 and CPT codes: Total—0.48% |
| Nehler (2014)17 | United States | MarketScan database (2004–2008) | US population age ≥40 | ICD-9 and CPT codes used to identify CLI cases | 2008 Overall: 1.28% 2008 Commercial: 0.80% 2008 Medicaid: 2.57% 2008 Medicare: 2.01% |
Total CLI: 0.35% |
| Mustapha (2018)20 | United States | Medicare fee-for-service Parts A and B (2011–2015) | Adult US Medicare population | ICD-9 and CPT codes used to identify CLI cases | 2011: 116,031 (0.32%) | Total CLI: 0.26% |
Abbreviations: CLI, critical limb ischemia; CPT, Current Procedural Terminology®; ICD-9, International Classification of Diseases 9th Revision.