Inclusion Criteria:

All discharges with the diagnosis codes for foreign body left during a procedure

There are three numerators to be calculated:

• NUM1 – Surgical Admission
• NUM2 – Readmission to same hospital within 30 days
• NUM3 – Readmission to a different hospital within 30 days

NUM1 (Surgical Admission)

Diagnosis of foreign body left during procedure occurs during admission

Inclusion Criteria:

1. *Note: retained foreign body is identified as:

T81.5, T81.6 (as any significant diagnosis (diagnosis types M, 1, C, 2, W, X, Y)

1. Hospital discharges with a length of stay greater than or equal 2 days OR
2. Hospital discharges with a length of stay less than 1 days and died

Note for NUM1: after exclusion, NUM1 should only include T81.5, T81.6 as diagnosis type 2. The extra steps in exclusions 1 and 2 are for R&D.

Exclusion Criteria:

1. Hospital discharges with diagnosis codes denoting foreign body* left inside the body during a procedure as MRDx and not type 2 (to exclude all diagnosis codes for foreign body left inside the body during a procedure as primary/principal diagnosis) OR
2. Hospital discharges with secondary diagnosis codes denoting foreign body* left inside the body during a procedure as a pre-admit comorbidity (Dx type 1, C, [W,X,Y, but not type 2] to exclude all secondary diagnosis present on admission)

*Note: check T81.5 and T81.6 only

NUM2

Inclusion Criteria:

Diagnosis of foreign body* left during procedure occurs during a readmission TO SAME HOSPITAL within 30 days of discharge date of index admission.

NUM3

Inclusion Criteria:

Diagnosis of foreign body* left during procedure occurs during a readmission TO DIFFERENT HOSPITAL within 30 days of discharge date of index admission.

*Note: On readmission record, retained foreign body is identified as follows:

T81.5 or T81.6 in any diagnosis fields (M, 1, C, W, X, Y);

All surgical and medical discharges, 15 years and older. Include all valid discharges (i.e. allow more than one index admission per patient, if someone had multiple admissions that qualify for denominator).

.

Inclusion Criteria:

1. Admission to an acute care institution (Facility Type Code = 1)
2. Age 15 years and older
3. Sex coded as male or female
4. Admission date <=March 1 (to allow 30-day follow-up for readmission)

Exclusion Criteria:

1. Record with invalid Health Card Number (HCN)