Table 1 ICD-9-CM and ICD-10 Codes to Define Co-morbidity Among Patients Referred for Sleep Diagnostic Testing
Co-morbidities | Authors | Algorithm | ICD-10 diagnostic codes | ICD-9-CM diagnostic codes | Sensitivity | Specificity | PPV |
|---|---|---|---|---|---|---|---|
Hypertension (with and without complication) | Tu et al.[43] | 2 physician claims in 3 years | I10.x, I11.x–I13.x, I15.x | 401.x, 402.x–405.x | 73% | 95% | 87% |
Diabetes (with and without complication) | Hux et al.[44] | 1 hospitalization or 2 physician claims in 2 years | E10.0-E10.9, E11.0-E11.9, E12.0-E12.9, E13.0-E13.9, E14.0-E14.9 | 250.0–250.9 | 86% | 97% | 80% |
Asthma | Huzel et al.[45] | 1 or more physician claims in 2 years | J45.0, J45.1, J45.8, J45.9 | 490.0, 491.0, 492.0, 493.0 | 50.9% | 98.1% | NR |
Myocardial Infarction | Austin et al.[46] | Primary discharge diagnosis of AMI in hospitalization database | I21.x, I22.x, I25.2 | 410.x | 88.8% | 92.8% | 88.5% |
Congestive Heart Failure | Lee et al.[47] | Primary discharge diagnosis of CHF in hospitalization database | I09.9, I11.0, I13.0, I13.2, I25.5, I42.0, I42.5–42.9, I43.x, I50.x, P29.0 | 428.x | NR | NR | 94.3% |
Cerebrovascular Accident/Transient Ischemic Attack | Kokotailo and Hill[48] | Primary discharge diagnosis of stroke in hospitalization database | H34.1, I63.x, I64.x, I61.x, I60.x, G45.x | 362.3, 430.x, 431.x, 433.x1, 434.x1, 435.x, 436 | 67% | 97% | 84% |
COPD | No Validated Algorithm | J44 | 491.21, 493.2, 496 | NR | NR | NR | |
Depression | No Validated Algorithm | F20.4, F31.3-F31.5, F32.x, F33.x, F34.1, F41.2, F43.2 | 296.2, 296.3, 296.5, 300.4, 309.x, 311 | NR | NR | NR | |
Cardiac Arrhythmia | No Validated Algorithm | I44.1-I44.3, I45.6, I45.9, I47.x-I49.x, R00.0, R00.1, R00.8, T82.1, Z45.0, Z95.0 | 426.0, 426.1, 426.7, 426.9, 426.10, 426.12, 427.0–427.4, 427.6–427.9, 785.0, 996.01, 996.04, V45.0, V53.3 | NR | NR | NR | |