Table 3:
The unweighted positive predictive value (PPV) for individual ICD 9 and ICD10 fracture codes Highlighted ICD codes were removed in modified algorithm
| Code | Diagnosis | N charts by algorithm | True Fracture Episode | PPV (95% CI)* |
|---|---|---|---|---|
| ICD 9 | ||||
| 733.1 | Pathologic Fracture | 14 | 12 | 86 (59,97) |
| 733.8 | Malunion and nonunion of fracture | 16 | 2 | 12 (2,38) |
| 801 | Fracture of base of skull. | 2 | 1 | 50 (10,90) |
| 802 | Fracture of face bones | 17 | 14 | 82 (58,94) |
| 804 | Multiple fractures involving skull or face with other bones | 1 | 1 | 100 (17,100) |
| 805 | Fracture of vertebral column without mention of spinal cord injury | 12 | 9 | 75 (46,91) |
| 806 | Fracture of vertebral column with spinal cord injury | 13 | 7 | 54 (29,77) |
| 807 | Fracture of rib(s) sternum larynx and trachea | 15 | 14 | 93 (68,100) |
| 808 | Fracture of pelvis | 16 | 9 | 56 (33,77) |
| 810 | Fracture of clavicle | 16 | 15 | 94 (69,100) |
| 811 | Fracture of scapula | 12 | 9 | 75 (46,91) |
| 812 | Fracture of humerus | 15 | 14 | 93 (68,100) |
| 813 | Fracture of radius and ulna | 16 | 15 | 94 (69,100) |
| 814 | Fracture of carpal bone(s) | 16 | 12 | 75 (50,90) |
| 815 | Fracture of metacarpal bone(s) | 13 | 11 | 85 (56,97) |
| 816 | Fracture of one or more phalanges of hand | 16 | 15 | 94 (69,100) |
| 817 | Multiple fractures of hand bones | 1 | 1 | 100 (17,100) |
| 819 | Multiple fractures involving both upper limbs and upper limb with rib(s) and sternum | 1 | 0 | 0 (0,83) |
| 820 | Fracture of neck of femur | 15 | 9 | 60 (36,80) |
| 821 | Fracture of other and unspecified parts of femur | 13 | 11 | 85 (56,97) |
| 822 | Fracture of patella | 14 | 10 | 71 (45,88) |
| 823 | Fracture of tibia and fibula | 14 | 9 | 64 (39,84) |
| 824 | Fracture of ankle | 12 | 8 | 67 (39,86) |
| 825 | Fracture of one or more tarsal and metatarsal bones | 17 | 12 | 71 (47,87) |
| 826 | Fracture of one or more phalanges of foot | 13 | 12 | 92 (64,100) |
| 827 | Other multiple and ill-defined fractures of lower limb | 2 | 1 | 50 (10,90) |
| 829 | Fracture of unspecified bones | 15 | 11 | 73 (48,89) |
| E887** | Fracture, cause unspecified. | 11 | 11 | 100 (69,100) |
| ICD 10 | ||||
| M484 | Fatigue fracture of vertebra | 3 | 3 | 100 (38,100) |
| M80 | Osteoporosis with pathological fracture | 5 | 5 | 100 (51,100) |
| M84 | Disorder of continuity of bone | 12 | 8 | 67 (39,86) |
| S02 | Fracture of skull and facial bones | 9 | 6 | 67 (35,88) |
| S12 | Fracture of cervical vertebra and other parts of neck | 10 | 9 | 90 (57,100) |
| S22 | Fracture of rib(s), sternum and thoracic spine | 15 | 14 | 93 (68,100) |
| S32 | Fracture of lumbar spine and pelvis | 14 | 10 | 71 (45,88) |
| S42 | Fracture of shoulder and upper arm | 14 | 11 | 79 (52,93) |
| S49 | Other and unspecified injuries of shoulder and upper arm | 9 | 2 | 22 (6,56) |
| S52 | Fracture of forearm | 12 | 11 | 92 (62,100) |
| S59 | Other and unspecified injuries of elbow and forearm | 11 | 5 | 45 (21,72) |
| S62 | Fracture at wrist and hand level | 12 | 9 | 75 (46,91) |
| S72 | Fracture of femur | 12 | 11 | 92 (62,100) |
| S79 | Other and unspecified injuries of hip and thigh | 2 | 0 | 0 (0,71) |
| S82 | Fracture of lower leg, including ankle | 10 | 10 | 100 (67,100) |
| S89 | Other and unspecified injuries of lower leg | 10 | 3 | 30 (11,61) |
| S92 | Fracture of foot and toe, except ankle | 10 | 8 | 80 (48,95) |
| S99 | Other and unspecified injuries of ankle and foot | 13 | 3 | 23 (8,51) |
*
Wilson confidence intervals were used for the positive predictive values confidence intervals.
**
Although high PPV all were in Outpatient second position, this code was selectively added back to modified algorithm