This section contains naming conventions for anatomical structures in SNOMED CT.
Order antigens numerically first.
For example,
732279009 |Cell positive for CD3 antigen and positive for CD4 antigen (cell)|
NOT
Cell positive for CD4 antigen and positive for CD3 antigen
Named antigens follow in alphabetical order.
For example,
1373093007 |Cell positive for CD10 antigen and positive for FMC7 antigen (cell)|
NOT
Cell positive for FMC7 antigen and positive for CD10 antigen
Include “positive”/”negative” for each antigen individually. Do not group by positive or negative expressions.
For example,
1373277009 |Cell positive for CD4 antigen and negative for CD25 antigen and positive for CD127 antigen (cell)|
NOT
Cell positive for CD4 and CD127 antigen and negative for CD127 antigen,
The PT includes the “shorthand" expression. This terming is commonly used in the domain.
For example,
1373277009 |Cell positive for CD4 antigen and negative for CD25 antigen and positive for CD127 antigen (cell)| has a PT of “CD4+CD25-CD127+ cell”
1373093007 |Cell positive for CD10 antigen and positive for FMC7 antigen (cell)| has a PT of “CD10+FMC7+ cell”
Include an acceptable description of the FSN minus the semantic tag.
If appropriate, include an acceptable description with the expansion of a gene name, and include the word antigen.
For example,
Note: Not all existing content conforms to this guidance.
For example,
Liver structure (body structure)
Entire liver (body structure)
Liver part (body structure)
For example,

Entire liver (body structure)
Entire liver
Entire thumb (body structure)
Entire thumb
Entire first digit of hand
For example,
Liver structure (body structure)
Liver structure
Liver
S concepts are usually named x structure (body structure) or structure of x (body structure). E concepts are usually named entire x (body structure) or x entire (body structure). P concepts are usually named x part (body structure) or part of x (body structure).
Thumb structure (body structure)
Thumb structure
First digit of hand
Thumb
Fully specified names and preferred names should use proper names of digits of hand and foot. The names by order of digits can be added as optional synonyms. The order of fingers is different from the order of digits of hand because the thumb is not a finger in SNOMED CT. Therefore, the order of the finger should not be used to avoid potential confusion.
Index finger structure (body structure)
Index finger structure
Second digit of hand
Index finger
Little finger structure (body structure)
Little finger structure
Fifth digit of hand
Little finger
Middle finger structure (body structure)
Middle finger structure
Third digit of hand
Middle finger
Ring finger structure (body structure)
Ring finger structure
Fourth digit of hand
Ring finger
Thumb structure (body structure)
Thumb structure
First digit of hand
Thumb
Great toe structure (body structure)
Great toe structure
First digit of foot
First toe
Second toe structure (body structure)
Second toe structure
Second digit of foot
Second toe
Third toe structure (body structure)
Third toe structure
Third digit of foot
Third toe
Fourth toe structure (body structure)
Fourth toe structure
Fourth digit of foot
Fourth toe
Little toe structure (body structure)
Little toe structure
Fifth digit of foot
Fifth toe