Table 3.

Reasons for false positives of AHRQ PSI in the ICD-10 hospital discharge abstract administrative data when the indicator of presence on admission was ignored

PSI 5—foreign body left during the procedure N=29	PSI 7—selected infections due to medical care N=25	PSI 12— postoperative PE or DVT N=9	PSI 13— postoperative sepsis N=37	PSI 15—accidental puncture or laceration N=11
18—present on admission	7—present on admission	6—present on admission	15—present on admission	4—present on admission
8—no foreign body	11—unrelated to medical care	2—had DVT/PE in the past	12—urgent surgeries, having sepsis	7—no accidental puncture or laceration
2—for treatment purposes (eg, packing, stitch)	5—IV site bruised or injured, no infection	1—no DVT/PE	6—urgent surgeries, no sepsis
1—patient pulled and broke the catheter	2—conflicting documentation		2—no sepsis
			2—no surgery, sepsis

AHRQ, Agency for Healthcare Research and Quality; DVT, deep vein thrombosis; ICD-10, International Classification of Disease 10th revision; PE, pulmonary embolism; PSI, patient safety indicator.