Top 20 Services with Underpayment Coding Errors: Carriers/DMERCs/FIs

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Carriers (HCPCS), DMERCs (HCPCS), and FIs (Type of Bill) Underpayment Coding Errors
Paid Claims Error Rate Projected Improper Payments 95% Confidence Interval
Sort Ascending / Sort Descending Sort Ascending / Sort Descending Sort Ascending / Sort Descending Sort Ascending / Sort Descending
SNF-inpatient (including Part A) (21) 0.1% $14,244,949 ( 0.0%) - 0.2%
Hospital-outpatient (HHA-A also)(under OPPS 13X must be used for ASC claims submitted for OPPS payment -- eff. 7/00) (13) 0.3% $50,516,543 0.1% - 0.4%
HHA-outpatient (HHA-A also) (33) 1.0% $45,621,971 0.3% - 1.8%
Office/outpatient visit, est (99213) 0.6% $23,503,372 0.4% - 0.7%
Office/outpatient visit, est (99212) 3.2% $22,205,833 2.5% - 3.9%
Clinic-hospital based or independent renal dialysis facility (72) 0.3% $16,748,581 0.1% - 0.5%
HHA-inpatient or home health visits (Part B only) (32) 0.2% $10,626,839 0.0% - 0.3%
Non esrd epoetin alpha inj (Q0136) 2.2% $9,883,886 ( 1.5%) - 5.8%
Mri brain w/o dye (70551) 6.3% $6,743,153 ( 5.6%) - 18.3%
Subsequent hospital care (99231) 1.5% $6,733,558 0.1% - 2.9%
Office/outpatient visit, est (99211) 3.9% $6,115,032 1.8% - 6.0%
Emergency dept visit (99283) 1.6% $4,048,179 0.5% - 2.8%
EF complet w/intact nutrient (B4150) 2.7% $3,576,503 ( 1.0%) - 6.5%
Therapeutic exercises (97110) 0.4% $2,557,597 ( 0.1%) - 0.9%
Hospital-other (Part B) (14) 0.2% $2,524,785 0.0% - 0.4%
Chiropractic manipulation (98940) 1.7% $2,376,540 0.0% - 3.3%
Office/outpatient visit, est (99214) 0.1% $2,026,695 ( 0.0%) - 0.1%
Special facility or ASC surgery-rural primary care hospital (eff 10/94) (85) 0.1% $1,843,263 0.0% - 0.2%
Eye exam established pat (92012) 0.5% $1,788,044 ( 0.0%) - 1.1%
Subsequent hospital care (99232) 0.1% $1,660,525 0.0% - 0.2%
All Other Codes 0.1% $58,267,125 0.1% - 0.1%
Overall 0.2% $293,612,971 0.2% - 0.2%