1 / 47

With Semantic Analysis from Noun Phrases to SNOMED CT and Classification Codes Hans Rudolf Straub

With Semantic Analysis from Noun Phrases to SNOMED CT and Classification Codes Hans Rudolf Straub Semfinder AG, Switzerland. Reality Instances.  Free Text  Terminologies  Classifications  Groups / Statistics. Information Content per Case (in Bits ). Reality Instances. 

nascha
Download Presentation

With Semantic Analysis from Noun Phrases to SNOMED CT and Classification Codes Hans Rudolf Straub

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. With Semantic Analysis from Noun Phrases to SNOMED CT and Classification Codes Hans Rudolf Straub Semfinder AG, Switzerland

  2. Reality Instances  Free Text  Terminologies  Classifications  Groups / Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  3. InformationContent per Case (in Bits) Reality Instances  Free Text  Terminologies  Classifications  Groups / Statistics . . . . . . . . . . . . . . . .   . . . . . . . . . . . . . . . . . . . . . . . (512k)19100 . . . (16k)1428 (512)9

  4. Reality Instances  Free Text  Terminologies  Classifications  Groups / Statistics . . . . . . . • Information • Reduction is • Enormous- Inevitable- Ubiquitous • Necessary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  5. Reality Instances . . . . . . . • Information • Reduction is • Enormous- Inevitable- Ubiquitous • Necessary . . . . . . . . . Simplification is necessary and useful . . . . . . . . . . . . . . . . . . . . . . . . . . Overviews Statistics Comparisons Basis for Actions

  6. Reality Instances . . . . . . . • Information • Reduction is • Enormous- Inevitable- Ubiquitous • Necessary • Deducible? . . . . . . . . . Simplification is necessary and useful . . . . . . . . . . . . . . . . . . . . . . . . . . Overviews Statistics Comparisons Basis for Actions

  7. Reality Instances . . . . . . . Deducible? . . . . . . . . . Simplification is necessary and useful . . . . . . . . . . . . . . . . . . . . . . . . . . Overviews Statistics Comparisons Basis for Actions = Hierarchy?

  8. When is a Hierarchy a True Hierarchy? 1) Disjunctivity Species Barrier2) Unidirectionality  Time Arrow Deducible! = Hierarchy

  9. Forms any Ontology of Diseases a True Hierarchy? 1) Disjunctivity Species Barrier for Diseases? 2) Unidirectionality  Natural Time Arrow? Deducible?

  10. Problems with Hierarchies for Diseases 1) Inherent Multidimensionality (Combinatorial Explosion) 2) Sum/Summands Problem

  11. ICD-10: Several Dimensions in 1 Hierarchy organic complications causes causes I10 primary hypertension I11 hypertensive cardiopathy I12 hypertensive nephropathy I13 hypertensive cardiop. + nephrop. I15 secondary hypertension 3-digits I10 – I15 arterial hypertension group

  12. ICD-10: Several Dimensions in 1 Hierarchy 5-digits I11.00without crisis I11.01with crisis I15.20without crisis I15.21with crisis ... ... ... I11.0with cardiac insufficiency I11.9without card. Insuff. I12.0with renal insufficiency I12.9without ren. insuff. .. H .. N I13.2 H+N .. - 4-digits I15.0reno- vasc. I15.1reno- paren. I15.2 endo- crinous I10.0benign I10.1malignant I10 primary hypertension I11 hypertensive cardiopathy I12 hypertensive nephropathy I13 hypertensive cardiop. + nephrop. I15 secondary hypertension 3-digits I10 – I15 arterial hypertension group

  13. 2 Hierarchies Pathogenes Bacterium Pathogene Virus Organs 2 Choices 2 Degrees of freedom Resp. Organ Alimentary Organ Organ Representation of 2 Axes (= 2 Hierarchies) Germ Bacterium Germ Virus Organ 2 Choices 2 Degrees of Freedom Respiratory Organ Digestive Organ Organ = 2 Semantic Axes = 2Degrees of Freedom

  14. 12 Hierarchies Germ Certainty Localisation Bakterium Progression Germ Virus Organ Respiratory Organ Digestive Organ Organ 12 Hierarchies cannot be Represented Simultaneously

  15. Encapsulated Axes Pathogenesis Localisation Organ Certainty Root Focus Pathology Focus e.g. Fractur 29 Axes (8 Active)

  16. Concept Molecule StructuredRelationship Group (Postcoordinated)

  17. Concept Molecules: From Texts to Semantics

  18. Sum/Summands Problem Diagnosis of its Own I11.0with cardiac insufficiency I11.9without card. Insuff. I12.0with renal insufficiency I12.9without ren. insuff. .. H .. N I13.2 H+N .. - 4-digits I15.0reno- vasc. I15.1reno- paren. I15.2 endo- crinous I10.0benign I10.1malignant I10 primary hypertension I11 hypertensive cardiopathy I12 hypertensive nephropathy I13 hypertensive cardiop. + nephrop. I15 secondary hypertension 3-digits I10 – I15 arterial hypertension group Attribute of a Diagnosis

  19. Sum/Summands Problem • Autom. Included? • Additional Item? • Sequence? Diagnosis of its Own  I50.00 – I50.19 I11.0with cardiac insufficiency I11.9without card. Insuff. I12.0with renal insufficiency I12.9without ren. insuff. .. H .. N I13.2 H+N .. - 4-digits I15.0reno- vasc. I15.1reno- paren. I15.2 endo- crinous I10.0benign I10.1malignant I10 primary hypertension I11 hypertensive cardiopathy I12 hypertensive nephropathy I13 hypertensive cardiop. + nephrop. I15 secondary hypertension 3-digits I10 – I15 arterial hypertension group

  20. Sum/Summands Problem  Very Frequent! Diagnosis of its Own I11.0with cardiac insufficiency I11.9without card. Insuff. I12.0with renal insufficiency I12.9without ren. insuff. .. H .. N I13.2 H+N .. - 4-digits I15.0reno- vasc. I15.1reno- paren. I15.2 endo- crinous I10.0benign I10.1malignant I10 primary hypertension I11 hypertensive cardiopathy I12 hypertensive nephropathy I13 hypertensive cardiop. + nephrop. I15 secondary hypertension 3-digits I10 – I15 arterial hypertension group

  21. Sum/Summands Problem Severel Diseases can Coexist and Interrelate in the Same Patient Which of them Defines the Medical Case? Is there a "Hat" Disease?  Classification

  22. Sum/Summands Problem + = + = I10 N28.9 I12 Give Sum

  23. Sum/Summands Problem + = + = I12 N19 N19 + I12 Give Summands

  24. Sum/Summands Problem I12 Hypertensive renal diseaseIncludes: any condition in N18.- (renal failure) … … with any condition in I10 arteriosclerosis of kidney, …Excludes: secondary hypertension (I15.-)I12.0 Hypertensive renal disease with renal failure hypertensive renal failureI12.1 Hypertens. renal disease without renal failure hypertensive renal disease NOS I12 Hypertensive renal diseaseIncludes: any condition in N18.- (renal failure) … … with any condition in I10 arteriosclerosis of kidney, …Excludes: secondary hypertension (I15.-)I12.0 Hypertensive renal disease with renal failure hypertensive renal failureI12.1 Hypertens. renal disease without renal failure hypertensive renal disease NOS I12 Hypertensive renal diseaseIncludes: any condition in N18.- (renal failure) … … with any condition in I10 arteriosclerosis of kidney, …Excludes: secondary hypertension (I15.-)I12.0 Hypertensive renal disease with renal failure hypertensive renal failureI12.1 Hypertens. renal disease without renal failure hypertensive renal disease NOS

  25. Which Summand is Stronger? Fine Granularity (Summands) Deductionspossible? Coarse Granularity (Sum) Diagnoses Terminologies Classifications Classification Funnel (=Hierarchy?)

  26. Which Summand is Stronger? + hypertension nephropathy Summands Classification Funnel

  27. Which Summand is Stronger? + hypertension nephropathy Summands diabetic Nethie athero- Nepthie Sum with Full Information hypertensive nephropathy Classification Funnel

  28. Which Summand is Stronger? + hypertension nephropathy Summands diabetic Nethie athero- Nepthie Sum with Full Information hypertensive nephropathy Sum with Reduced Information nephropathy Classification Funnel N

  29. Which Summand is Stronger? + hypertension nephropathy Summands Hypertonie mit Kardiopathie Hypertonie mit Kardiopathie Sum with Full Information hypertension with nephropathy Sum with Reduced Information Classification Funnel

  30. Which Summand is Stronger? + hypertension nephropathy Summands Hypertonie mit Kardiopathie Hypertonie mit Kardiopathie Sum with Full Information hypertension with nephropathy Sum with Reduced Information hypertension Classification Funnel I

  31. Which Summand is Stronger? + hypertension nephropathy Summands diabetic Nethie Hypertonie mit Kardiopathie Hypertonie mit Kardiopathie athero- Nepthie Sum with Full Information hypertension with nephropathy hypertensive nephropathy Sum with Reduced Information hypertension nephropathy Classification Funnel I N Disjunction

  32. Sum/Summands = Normal part_of Relation? Finger part_of Hand  Never on Same Level - Natural Hierarchy Hypertension part_of (Hypertensive) Cardiopathy  Possibly on Same Level! - Hypertension Can Stand Alone - No Natural Hierarchy

  33. Sum/Summands = Normal part_of Relation? Finger part_of Hand  Never on Same Level - Natural Hierarchy Hypertension part_of (Hypertensive) Cardiopathy  Possibly on Same Level! - Hypertension Can Stand Alone - No Natural Hierarchy

  34. Sum/Summands = Normal part_of Relation?  mandatory part_of  contingent part_of Finger part_of Hand (Always) Finger without Hand (Not Naturally Possible) Hypertension part_of Hypert. Cardiopathy (Sometimes) Hypertension withoutHypert. Cardiopathy (Well Possible)

  35. Sum/Summands = Normal part_of Relation?  mandatory part_of  contingent part_of hand palm ... thumb deductions possible hypertensive cardiopathy hypertension cardiopathy deductions NOT possible

  36. The sum/summands problem is frequent - duodenal ulcer with gastrointestinal bleeding - diabetes with complications: - diabetic nephropathy - diabetic foot - cardiac lung oedema (= symptom cardiac insufficiency) - cerebral aneurysm with subarachnoidal bleeding and coma- monteggia-fracture (= fracture of ulna und luxation of radius) - Weber fracture (tibia + fibula + ligaments) - unhappy triad (meniscus + 2 ligaments) - appendicitis with perforation and peritonitis

  37. Reality Instances Sum/Summands Problem  Free Text  Terminologies  Classifications  Groups / Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . Many Points . . . . . . . . . . . .  . . One Point Simplification is Intended!

  38. Reality Instances  Free Text  Terminologies  Classifications  Groups / Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Severel Classifications of One Case are Possible . . . . . .

  39. From Noun Phrases to Terms and ICD-Codes Automated Coding System Free TextDiagnoses Structured Representationof Semantics ICD-10Codes (In Daily Routine in 180 Hospitals)

  40. From Noun Phrases to Terms and ICD-Codes Automated Coding System Free TextDiagnoses Understanding Texts Structured Representationof Semantics Understanding Codesand Coding Guidelines ICD-10Codes (In Daily Routine in 180 Hospitals)

  41. From Noun Phrases to Terms and ICD-Codes Automated Coding System Free TextDiagnoses Completion Queries Understanding Texts Structured Representationof Semantics Understanding Codesand Coding Guidelines ICD-10Codes (In Daily Routine in 180 Hospitals)

  42. From Noun Phrases to Terms and ICD-Codes Automated Coding System Free TextDiagnoses Completion Queries Understanding Texts Structured Representationof Semantics Understanding Codesand Coding Guidelines ICD-10Codes (In Daily Routine in 180 Hospitals)

  43. Are 2 Systems of Data Entry Necessary? SNOMED CT Automated Coding System Free TextDiagnoses Completion Queries Understanding Texts Structured Representationof Semantics StandardTerms StandardTerms Data Exchange Understanding Codesand Coding Guidelines ICD-10Codes ICD-10 Coding will continue

  44. Are 2 Systems of Data Entry Necessary? SNOMED CT Automated Coding System Free TextDiagnoses Completion Queries Understanding Texts Structured Representationof Semantics StandardTerms StandardTerms Free Data Exchange Understanding Codesand Coding Guidelines ICD-10Codes ICD-10 Coding will continue

  45. From Noun Phrases to Terms and ICD-Codes SNOMED CT Automated Coding System Free TextDiagnoses Completion Queries Understanding Texts Structured Representationof Semantics StandardTerms StandardTerms Free Data Exchange Understanding Codesand Coding Guidelines ICD-10Codes Fixed Standard for Data Exchange Open Method

  46. Summary A description of a coarser granularity cannot automatically be obtained from a description of finer granularity. Diagnoses resist to be arranged in form of a hierarchy due to the inherent multidimensionality and to the sum/summands-problem. Simplifying, grouping and classification of medical diagnosis will always be necessary in practice. When automatically assigning ICD-10 codes to medical cases, their SNOMED clinical terms can be assigned simultaneously.

More Related