LX

Header Number

Pos: 003	Max: 1
Detail - Optional
Loop: 2000	Elements: 1

Ref

Id

Element Name

Req

Type

Min/Max

Usage

LX01

554

Assigned Number
Description: Number assigned for differentiation within a transaction set

M

N0

1/6

Required

Notes:

1. The LX segment is required whenever any information in the LX loop is included in the transaction. In the event that claim/service information must be sorted, the LX segment must precede each series of claim level and service level segments.
2. Any Table 2 data must commence with an LX segment. Multiple sorts are accomplished through multiple LX loops.
3. For Medicare Part A, write/read the LX segment once for each provider’s fiscal period end year and month/type of bill summary break in the file (TTYYMM in LX01). For Medicare Part B, write/read the LX segment once for unassigned claims using the value of “zero” and once for assigned claims using the value of “one”.

Example:

LX*1~
LX*961011~