Asthma 493 http://purl.bioontology.org/ontology/ICD9CM/493 SubClass Chronic obstructive asthma 493.2 http://purl.bioontology.org/ontology/ICD9CM/493.2 ChildCount 3 class Intrinsic asthma 493.1 http://purl.bioontology.org/ontology/ICD9CM/493.1 ChildCount 3 class Extrinsic asthma 493.0 http://purl.bioontology.org/ontology/ICD9CM/493.0 ChildCount 3 class Asthma, unspecified 493.9 http://purl.bioontology.org/ontology/ICD9CM/493.9 ChildCount 3 class Other forms of asthma 493.8 http://purl.bioontology.org/ontology/ICD9CM/493.8 ChildCount 2 class CHD CHRONIC OBSTRUCTIVE PULMONARY DISEASE AND ALLIED CONDITIONS 490-496.99 http://purl.bioontology.org/ontology/ICD9CM/490-496.99 ChildCount 7 class ChildCount 5 Semantic_Type Disease or Syndrome SOS Excludes: wheezing NOS (786.07) TUI T047 UMLS_CUI C0004096 ICF The following fifth-digit subclassification is for use with codes 493.0-493.2,493.9; : {0 unspecified; 1 with status asthmaticus; 2 with (acute) exacerbation} SuperClass CHRONIC OBSTRUCTIVE PULMONARY DISEASE AND ALLIED CONDITIONS 490-496.99 http://purl.bioontology.org/ontology/ICD9CM/490-496.99 ChildCount 7 class class