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Anesthesia Conversion Factors

The anesthesia conversion factors for each calendar year are listed by payment locality and are effective for the date the service was provided. The participating physician anesthesia conversion factor is listed first, the non-participating physician anesthesia conversion factor is second, and the limiting charge is listed in the third column.

The non-participating physician conversion factor is computed at 95 percent of the participating physician conversion factor. The limitation in the statute requires that Qualifi ed Nonphysician Anesthetist services not exceed the conversion factor for physicians' anesthesia services.

Find anesthesia conversion factors on CMS Anesthesiologists Center webpage.  This link takes you to an external website.

2017

CMS released the following anesthesia conversion factors that are effective January 1, 2017 for dates of service January 1, 2017 through December 31, 2017.

Locality Par Non-Par Limiting Charge
Hawaii/Pacific Islands $22.07 $20.97 $24.11
Nevada $22.15 $21.04 $24.20
Northern California – Area 05 – San Francisco County $24.02 $22.82 $26.24
Northern California – Area 06 – San Mateo County $23.93 $22.73 $26.14
Northern California – Area 07 – Alameda and Contra Costa Counties $23.26 $22.10 $25.41
Northern California – Area 09 – Santa Clara County $23.90 $22.71 $26.11
Northern California – Area 51 – Napa County $23.23 $22.07 $25.38
Northern California – Area 52 – Marin County $23.23 $22.07 $25.38
Northern California – Area 53 – Solano County $23.23 $22.07 $25.38
Northern California – Area 54 – Kern County $22.19 $21.08 $24.24
Northern California – Area 55 – Butte County $22.19 $21.08 $24.24
Northern California – Area 56 – Fresno County $22.19 $21.08 $24.24
Northern California – Area 57 – Kings County $22.19 $21.08 $24.24
Northern California – Area 58 – Madera County $22.19 $21.08 $24.24
Northern California – Area 59 – Merced County $22.19 $21.08 $24.24
Northern California – Area 60 – Stanislaus County $22.19 $21.08 $24.24
Northern California – Area 61 – Shasta County $22.19 $21.08 $24.24
Northern California – Area 62 – Riverside and San Bernardino Counties $22.19 $21.08 $24.24
Northern California – Area 63 – Placer and Sacramento Counties $22.19 $21.08 $24.24
Northern California – Area 64 – Monterey County $22.19 $21.08 $24.24
Northern California – Area 65 – San Benito County $22.19 $21.08 $24.24
Northern California – Area 66 – Santa Cruz County $22.19 $21.08 $24.24
Northern California – Area 67 – Sonoma County $22.19 $21.08 $24.24
Northern California – Area 68 – San Joaquin County $22.19 $21.08 $24.24
Northern California – Area 69 – Tulare County $22.19 $21.08 $24.24
Northern California – Area 70 – Sutter County $22.19 $21.08 $24.24
Northern California – Area 75 – All Other Counties $22.19 $21.08 $24.24
Southern California – Area 17 – Ventura County $22.77 $21.63 $24.88
Southern California – Area 18 – Los Angeles County $23.17 $22.01 $25.31
Southern California – Area 26 – Orange County $23.08 $21.93 $25.21
Southern California – Area 71 – Imperial County $22.19 $21.08 $24.24
Southern California – Area 72 – San Diego County $22.19 $21.08 $24.24
Southern California – Area 73 – San Luis Obispo County $22.19 $21.08 $24.24
Southern California – Area 74 – Santa Barbara County $22.19 $21.08 $24.24

2016

CMS released the following anesthesia conversion factors that are effective January 1, 2016 for dates of service January 1, 2016 through December 31, 2016.

Locality Par Non-Par Limiting Charge
Hawaii/Pacific Islands $22.07 $20.97 $24.11
Nevada $22.23 $21.12 $24.29
Northern California - 03 - Marin, Napa, Solano $23.29 $22.13 $25.44
Northern California - 05 - San Francisco $23.93 $22.73 $26.14
Northern California - 06 - San Mateo $23.82 $22.63 $26.02
Northern California - 07 - Oakland, Berkeley, Alameda, Contra Costa $23.19 $22.03 $25.34
Northern California - 09 - Santa Clara $23.89 $22.70 $26.10
Northern California - 99 - Rest of Northern California $22.27 $21.16 $24.33
Southern California - 17 - Ventura $22.89 $21.75 $25.01
Southern California - 18 - Los Angeles $23.22 $22.06 $25.37
Southern California - 26 - Orange County $23.20 $22.04 $25.35
Southern California - 99 - Rest of Southern California $22.27 $21.16 $24.33

2015

CMS released the following anesthesia conversion factors that are effective July 1, 2015 for dates of service July 1, 2015 -December 31, 2015.

Locality Par Non-Par Limiting Charge
Hawaii/Pacific Islands $22.47 $21.35 $24.55
Nevada $22.83 $21.69 $24.94
Northern California - Area 03 – Marin, Napa, Solano $23.63 $22.45 $25.82
Northern California - Area 05 – San Francisco $24.24 $23.03 $26.45
Northern California - Area 06 – San Mateo $24.11 $22.90 $26.34
Northern California - Area 07 – Oakland, Berkeley, Alameda, Contra Costa $23.50 $22.33 $25.67
Northern California - Area 09 – Santa Clara $24.18 $22.97 $26.42
Northern California - Area 99 – Rest of Northern California $22.70 $21.57 $24.80
Southern California - Area 17 – Ventura $23.42 $22.25 $25.59
Southern California - Area 18 – Los Angeles $23.79 $22.60 $25.99
Southern California - Area 26 – Orange County $23.77 $22.58 $25.97
Southern California - Area 99 – Rest of Southern California $22.70 $21.57 $24.80


CMS released the following anesthesia conversion factors that are effective January 1, 2015 for dates of service January 1, 2015 -June 30, 2015.

Locality Par Non-Par Limiting Charge
Hawaii/Pacific Islands $22.36 $21.24 $24.43
Nevada $22.72 $21.58 $24.82
Northern California - Area 03 – Marin, Napa, Solano $23.51 $22.33 $25.68
Northern California - Area 05 – San Francisco $24.12 $22.91 $26.35
Northern California - Area 06 – San Mateo $23.99 $22.79 $26.21
Northern California - Area 07 – Oakland, Berkeley, Alameda, Contra Costa $23.38 $22.21 $25.54
Northern California - Area 09 – Santa Clara $24.06 $22.86 $26.29
Northern California - Area 99 – Rest of Northern California $22.59 $21.46 $24.68
Southern California - Area 17 – Ventura $23.30 $22.14 $25.46
Southern California - Area 18 – Los Angeles $23.67 $22.49 $25.86
Southern California - Area 26 – Orange County $23.65 $22.47 $25.84
Southern California - Area 99 – Rest of Southern California $22.59 $21.46 $24.68

 

Last Updated Nov 14, 2016