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Table 14. ICD-O, Third
Edition, Rules and thier Corresponding Numbers
in ICD-O, Second Edition
| Subject |
ICD-O
Third Edition |
ICD-O
Second Edition* |
| Topographic
regions and ill-defined sites |
A |
2 |
| Prefixes |
B |
3 |
| More than
one topographic category or subcategory |
C |
4 |
| Topography
codes for lymphomas |
D |
12 |
| Topography
code for leukemias |
E |
13 |
| Behavior
code |
F |
5 |
| Grading
or differentiation |
G |
6 |
| Site-associated
morphology |
H |
8,9 |
| Compound
morphology diagnoses |
J |
10 |
| Coding
multiple morphology terms |
K |
11 |
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*Notes: Second Edition rule 1 described the structure
of the 10-digit code.
Second
Edition rule 7 described the differences between the
terms
"cancer"
and "carcinoma."
Second
Edition rule 14 described the issues in coding multiple
neoplasms.
There
is no Rule I in the Third Edition to avoid possible
confusion with
a Rule 1.
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