所有 HL7 段结构 table headers 是什么意思?

What do all of the HL7 segment structure table headers mean?

例如,OBR 段引用 table from here 具有以下 headers:

以下是我的观察:

以下是我不知道的主要内容:

  • LENGTH looks fairly straightforward too: It's the length of the data. But some of them are 0?

长度是权威的还是任意的。有些长度是精确长度。有些是最大长度。这就是为什么其中一些为零的原因。很少有其他指南简单地把它放空。参考this.

  • What does OPT mean? In this column, I've seen things like: O, R, RE, C, B, X, W

OPT表示可选性。

R = Required  
RE = Required but may be empty  
O = Optional  
C = Conditional  
X = Not Supported  
B = Backward Compatibility  
W = Withdrawn

详情请参阅this

  • What does RPT/# mean? In this column, I've seen things like: *, 1, 2

这表示字段值可以重复多少次。换句话说,一个字段可以容纳多少个值。

1 = Only one value  
2 = Maximum two values  
* = Not Defined/Multiple
  • What does TBL# mean? In this column, I've seen things like: 0065, 0074, 9999

这些是 table 个数字,应参考有关该字段的更多信息。因此,在您的示例中,对于 OBR.11 字段,链接 table 是 0065,它列出了该字段的可能值:

A = Add ordered tests to the existing specimen  
G = Generated order; reflex order  
L = Lab to obtain specimen from patient  
O = Specimen obtained by service other than Lab  
P = Pending specimen; Order sent prior to delivery  
R = Revised order  
S = Schedule the tests specified below