Medicare Claims Processing Manual (Pub. 100-04), Ch. 23 § 40.2
A/B MAC (B) Record Layout for Clinical Laboratory Fee Schedule
40.2 - A/B MAC (B) Record Layout for Clinical Laboratory Fee Schedule
(Rev. 1, 10-01-03)
PM AB-01-162, AB-02-163
The instructions for each annual update contain the actual data set name for that year. The Data Set Name is
included with each annual update instructions.
Data Element Name
Picture
Location
Comment
HCPCS Code
X(05)
1-5
A/B MAC (B)
Number
X(05)
6-10
Locality
X(02)
11-12
00 = Denotes Single A/B MAC (B)
State
01 = North Dakota
02 = South Dakota
20 = Puerto Rico
40 = New Hampshire
50 = Vermont
60% Local Fee
9(05)V99
13 - 19
62% Local Fee
9(05)V99
20 - 26
60% Natl Limit Amt
9(05)V99
27 - 33
62% Natl Limit Amt
9(05)V99
34 - 40
60% Pricing Amt
9(05)V99
41 - 47
62% Pricing Amt
9(05)V99
48 - 54
Gap - Fill Indicator
X(01)
55 - 55
0 = No Gap-fill Required
1 = A/B MAC (B) Gap-fill
2 = Special Instructions Apply
Modifier
X(02)
56 - 57
Where modifier is shown, QW
denotes a CLIA waive test.
Filler
X(03)
58 - 60