Table 2.

Adult MEPS respondents with ambulatory back pain utilization events in Office-based (OB), OutPatient (OP), ER, and Prescription medication (Rx^a) event files, i.e. “Users” of back pain services (N=8,244).

Panel	Respondents	Events	Events only CCC “205”	Events only ICD 846,847	Events coded with both CCC “205” and ICD 846,847
10	1,404	19,003	17,596	1,363	44
9	1,469	19,445	17,602	1,655	188
8	1,406	18,659	16,908	1,675	76
7	1,336	16,858	15,282	1,434	142
6	1,799	21,093	18,665	2,183	245
5	830	10,135	8,806	1,213	116
Pooled across Panels 5–10:	N=8,244	105,193	94,859 (90.2%)	9,523 (9%)	811 (0.8%)

Note: Back Pain events defined as ICD-9 code 846 (sacroiliac sprain/strain), ICD-9 code 847 (other back sprain/strain), or CCC code 205 (spondylosis, intervertebral disc disorders, other back problems). Reading row one as example, of the 19,003 back pain utilization events identified in Panel 10, 17,596 of these events were coded as CCC “205”, 1,363 of these events were coded ICD 846 or 847, and 44 were coded CCC “205” and ICD 846,847.

^aExcludes Rx associated with Inpatient hospitalizations for back pain.