Exhibit 2: Prevalence of chronic conditions among fee-for-service Medicare beneficiaries in 2012, with and without redaction.
| All (N = 31,808,792) | Younger than age 65 (n = 5,988,487) | Ages 65 and older (n = 25,820,305) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Patients missed | Patients missed | Patients missed | ||||||||||
| Condition | Unredacted | Redacted | No. | % | Unredacted | Redacted | No. | % | Unredacted | Redacted | No. | % |
| Hepatitis C | 0.52% | 0.46% | 19,350 | 11.7 | 1.94% | 1.66% | 16,768 | 14.5 | 0.19% | 0.18% | 2,582 | 5.2 |
| Other liver disease | 0.68 | 0.62 | 21,127 | 9.1 | 1.36 | 1.18 | 10,799 | 13.4 | 0.53 | 0.49 | 10,328 | 6.5 |
| Serious mental illness | 3.54 | 3.38 | 52,061 | 4.5 | 12.99 | 12.25 | 44,315 | 5.7 | 1.35 | 1.32 | 7,746 | 1.9 |
| Depression | 8.83 | 8.58 | 77,920 | 2.8 | 15.29 | 14.42 | 52,100 | 5.7 | 7.33 | 7.23 | 25,820 | 1.4 |
| Cerebral hemorrhage | 0.39 | 0.38 | 3,181 | 1.8 | 0.25 | 0.24 | 599 | 6.2 | 0.42 | 0.41 | 2,582 | 1.2 |
| Coronary artery disease | 4.32 | 4.24 | 24,288 | 1.9 | 3.20 | 3.01 | 11,378 | 6.0 | 4.58 | 4.53 | 12,910 | 1.2 |
| COPD | 9.63 | 9.49 | 41,429 | 1.4 | 9.46 | 9.07 | 23,355 | 4.2 | 9.66 | 9.59 | 18,074 | 0.8 |
| Dementia | 6.22 | 6.16 | 20,283 | 1.0 | 1.52 | 1.44 | 4,791 | 5.9 | 7.31 | 7.25 | 15,492 | 0.7 |
| CHF | 8.68 | 8.60 | 25,672 | 0.9 | 5.75 | 5.58 | 10,180 | 3.0 | 9.36 | 9.30 | 15,492 | 0.6 |
| Peripheral vascular disease | 8.93 | 8.87 | 17,514 | 0.7 | 5.33 | 5.21 | 7,186 | 2.2 | 9.76 | 9.72 | 10,328 | 0.5 |
| Cancer | 3.41 | 3.39 | 6,961 | 0.5 | 2.22 | 2.19 | 1,797 | 1.5 | 3.69 | 3.67 | 5,164 | 0.4 |
| Diabetes | 21.22 | 21.16 | 19,124 | 0.3 | 20.05 | 19.86 | 11,378 | 1.0 | 21.49 | 21.46 | 7,746 | 0.2 |
| HIV/AIDS | —a | —a | —a | —a | 1.28 | 1.25 | 1,797 | 2.2 | —a | —a | —a | —a |
SOURCE Authors’ analysis of fee-for-service Medicare claims for 2012. NOTES We used individual Hierarchical Condition Category codes to classify beneficiaries within conditions. We modified serious mental illness by removing International Classification of Diseases, Ninth Revision (ICD-9), codes for external causes (E*), and codes 296.2*, 296.3* (except for 296.24 and 296.34). Depression includes the following diagnoses: 300.4, 301.10–301.13, 309.1, 311, and 296.20–296.23, 296.25–296.33, 296.35, and 296.36. Hepatitis C includes the following diagnoses: 70.44, 70.41, 70.51, and 70.54. We classified a patient as having a condition if the patient had one inpatient claim or two physician visit claims at least seven days apart with a relevant diagnosis. COPD is chronic obstructive pulmonary disease. CHF is congestive heart failure.
Data not reported for beneficiaries ages sixty-five and older because of data suppression rules.