|
Each topographic and morphologic term appears only once in
the numerical list, as the examples in Table 10 demonstrate.
The first listed term, printed in bold type under a particular
code, is the preferred term.
|
|
In this example, "parotid gland"
would describe all cases coded to C07.9. The bold type
indicates that this is the preferred (first) term. The
synonym, "parotid, NOS," is indented under
"Parotid gland." The non-indented terms, "Stensen
duct" and "parotid gland duct," are called
equivalent terms. They are not synonyms of the preferred
term (parotid gland) but are listed under the same code
number because they are topographic subdivisions of
the term
|
listed first and are not sufficiently different to have their
own codes. In the alphabetic index all these terms are given
the code C07.9. Similarly, for morphology, "oxyphilic adenocarcinoma"
would describe all morphologies coded to M-8290/3. "Oncocytic
carcinoma" and "oncocytic adenocarcinoma" are
other names (synonyms) for "oxyphilic adenocarcinoma,"
but "Hurthle cell carcinoma," "Hurthle cell adenocarcinoma,"
and "follicular carcinoma, oxyphilic cell" (equivalent
terms) are other types of carcinomas involving the oxyphilic
cell.
|
Table
10. Examples of Numerical List Format
|
|
C07.9
|
Parotid
gland |
| |
Parotid,
NOS |
| |
Stensen
duct |
| |
Parotid
gland duct |
| |
|
|
M-8290/3
|
Oxyphilic
adenocarcinoma |
| |
Oncocytic
carcinoma |
| |
Oncocytic
adnocarninoma |
| |
Hurthle
cell carcinoma (C73.9) |
| |
Hurthle
cell adenocarcinoma (C73.9) |
| |
Follicular
carcinoma, oxyphilic cell (C73.9) |
|
|
|
