SNOMED CT Editorial Guide

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Modeling 

Parent concept

Most distal appropriate descendant of 105590001 |Substance (substance)|

Semantic tag

(substance)

Definition status
900000000000074008 |Necessary but not sufficient concept definition status (core metadata concept)|

Primitive

Attribute

738774007 |Is modification of (attribute)| relationship to the substance with unspecified

substance

hydration

726542003 |Has disposition (attribute)|, as appropriate

Modeling (inferred view)

...

(substance)

...

900000000000074008 |Necessary but not sufficient concept definition status (core metadata concept)|

Hydrates

Hydates are modeled with an

Concept
t

...

738774007 |Is modification of (attribute)|
relationship to the

...

substance

...

726542003 |Has disposition (attribute)| as appropriate

Hydrates

Hydates are modeled with an Is modification of (attribute) relationship to the unspecified substanceunspecified hydration. 

For example,

    • Ferrous oxalate dihydrate (substance) is modification of → Ferrous oxalate
    • Caffeine hydrate (substance) is modification of → Caffeine
    • Zinc sulfate heptahydrate (substance) is modification of → Zinc sulfate

Naming Guidelines

FSN

Pattern:

  • X hydrate (substance)
  • X dihydrate (substance)
  • X monohydrate (substance)
Example:

For example,

      • Copper sulfate pentahydrate (substance)

Preferred Term

Pattern:

    • X hydrate
    • X dihydrate
    • X monohydrate
Example:

For example,

      • Copper sulfate pentahydrate

Synonyms

Pattern:

Example:

none

Exemplar

The following illustrates the inferred view.

 Caffeine hydrate (substance) IS MODIFICATION OF Caffeine (substance)

Image Modified

Anhydrous compounds

Anhydrous compounds have a IS MODIFICATION OF an

Concept
t738774007 |Is modification of (attribute)|
relationship to the unspecified substance, i.e. where the level hydration is not specified.

For example,

    • Sodium carbonate anhydrous (substance) is modification of → Sodium carbonate
    • Theophylline anhydrous (substance) is modification of → Theophylline

Naming Guidelines

FSN

Pattern:

  • X anhydrous (substance)
Example:

For example,

      • Theophylline anhydrous (substance)

Preferred Term

Pattern:

  • X anhydrous
Example:

For example,

      • Theophylline anhydrous

Synonyms

Pattern:

Anhydrous X

Exemplar

The following illustrates the inferred view.

Theophylline anhydrous (substance) IS MODIFICATION OF Theophylline (substance)

Image Modified