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Based on the HPO release of August 2024, and the SNOMED International release of April 2024, the mapping results are given below.

Note that 86% of the HPO terms are mappable either directly or involving an expression, so that the missing 13% could potentially be reduced with new SNOMED content.

The expressions have been validated using the Post-coordination Demonstrator resource. (Postcoordination Implementation Demo (ihtsdo.github.io))

GroupNumber (%)
One to one map7184 (41%)
One to many81 (0.5%)
Map with expression7833 (45%)
Map to parent2338 (13.4%)
Clarification22 (0.1%)
Out of scope685 (3.9)
Total18,370

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Examples of post-coordination


:0010802 Perioral hyperpigmentation.423066003 |Finding of mouth region (finding)|{363698007 |Finding site(attribute)|=110488009 |Skin of perioral region of face (body structure)|,

116676008 |Associated morphology (attribute)|=4830009 |Hyperpigmentation (morphologic abnormality)|}

HP:4<7%


HPO concept

SNOMED post-coordinated expression


1

HP:0001525 Severe failure to thrive

54840006 |Failure to thrive (disorder)|:

{246112005 |Severity (attribute)|=24484000 |Severe (severity modifier) (qualifier value)|}

approx (45%)

2

HP

:

3

0004363 Abnormal circulating calcium concentration.

1217344005 |Finding of blood substance level (finding)|:

{363713009 |Has interpretation (attribute)| =394844007 |Outside reference range (qualifier value)|,

363714003 |Interprets (attribute)| =312472004 |Blood calcium measurement (procedure)|}

approx 30%

3

HP:6000554 Positive bloodstream plasmodium falciparum nucleic acid pathogen test.

434156008 |Infectious agent in bloodstream (finding)|:

{363713009 |Has interpretation (attribute)| = 10828004 |Positive (qualifier value)|, 363714003 |Interprets (attribute)| =

(398545005 |Nucleic acid assay (procedure)|:

246093002 |Component (attribute)| =708396002 |Deoxyribonucleic acid of Plasmodium falciparum (substance)|,

370129005 |Measurement method (attribute)|=444077007 |Analysis using reverse transcriptase polymerase chain reaction technique (procedure)|)}

637 (8%)

5

HP:0004880 Respiratory infections in early life

275498002 |Respiratory tract infection (disorder)|:

{246454002 |Occurrence (attribute)|=713152004 |Early childhood (qualifier value)|},

{263502005 |Clinical course (attribute)|=255227004 |Recurrent (qualifier value)|}