Table III.

Most common elective inpatient and outpatient operating room procedures performed in the United States based on surgery setting

Inpatient
	Description	n (Thousand)	Cost (Billion, $)	Reimbursement∗ (Billion, $)	Net income (Billion, $)
1	Knee arthroplasty	772.1	12.7	14.1– 15.2	1.4–2.4
2	Cesarean section	673.4	4.5	5.7–6.6	1.1–2.0
3	Hip arthroplasty	434.2	7.3	8.2–8.8	0.9–1.5
4	Spinal fusion	379.6	11.7	14.4–15.8	2.6–4.1
5	Laminectomy/discectomy	239.5	6.7	8.4–9.2	1.7–2.6
6	Hysterectomy	148.4	1.9	2.0–2.2	0.1–0.3
7	Gastrectomy	145.3	2.1	2.7–3.0	0.6–0.9
8	Heart valve procedures	124.8	6.3	7.2–7.7	0.9–1.3
9	Arthroplasty other than hip/knee	123.0	2.3	2.4–2.5	0.002–0.2
10	Colorectal resection	120.3	2.6	2.8–3.1	0.2–0.5

Outpatient
	Description	n (Thousand)	Cost (Billion, $)	Reimbursement∗ (Billion, $)	Net income (Billion, $)
1	Cataract/lens surgery	1,252.6	2.3	3.5–3.7	1.2–1.4
2	Cholecystectomy/duct exploration	580.4	2.3	5.2–5.7	2.9–3.3
3	Arthroscopy/meniscectomy	506.3	1.7	3.5–3.8	1.8–2.1
4	Inguinal/femoral hernia repair	452.4	1.7	3.1–3.3	1.4–1.7
5	Other hernia repair-ventral/umbilical	423.5	1.7	3.5–3.7	1.7–2.0
6	Removal of tonsils and/or adenoids	417.9	1.5	2.7–2.9	1.2–1.5
7	Peripheral nerve decompression	354.5	0.7	1.2–1.3	0.5–0.6
8	Myringotomy/tympanostomy	319.7	0.6	1.0–1.1	0.4–0.5
9	Lumpectomy	315.8	0.9	1.7–1.8	0.8–1.0
10	Laminectomy/discectomy	234.3	1.4	3.1–3.3	1.7–1.9

Net income = reimbursement – cost

Outpatient = hospital-owned outpatient surgery centers.

Procedures identified with clinical classification software developed by the HCUP.

^∗Ranges in hospital reimbursement are based on conservative (lower) to upper reimbursement estimates based on differences in payment rates based on payer type for each procedure.