Specific code 2010 ICD-9-CM Diagnosis Code 313.21
Shyness disorder of childhood
  • Short description: Shyness disorder-child.
  • ICD-9-CM 313.21 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 313.21 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2010 version of ICD-9-CM 313.21.
  • More recent version(s) of ICD-9-CM 313.21: 2011 2012 2013 2014.
Disease Synonyms
  • Avoidance disorder
  • Avoidance disorder, childhood
  • Avoidant disorder of childhood
Applies To
  • Sensitivity reaction of childhood or adolescence
Convert to ICD-10-CM: 313.21 converts approximately to:
  • 2014 ICD-10-CM F93.8 Other childhood emotional disorders
ICD-9-CM Volume 2 Index entries containing back-references to 313.21:
  • Disorder - see also Disease
    • avoidant, childhood or adolescence 313.21
    • shyness, of childhood and adolescence 313.21
  • Disturbance - see also Disease
    • emotions specific to childhood or adolescence 313.9
      • with
        • academic underachievement 313.83
        • anxiety and fearfulness 313.0
        • elective mutism 313.23
        • identity disorder 313.82
        • jealousy 313.3
        • misery and unhappiness 313.1
        • oppositional defiant disorder 313.81
        • overanxiousness 313.0
        • sensitivity 313.21
        • shyness 313.21
        • social withdrawal 313.22
        • withdrawal reaction 313.22
      • involving relationship problems 313.3
      • mixed 313.89
      • specified type NEC 313.89
  • Sensitivity, sensitization - see also Allergy
    • child (excessive) 313.21
  • Timidity, child 313.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 313.21 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2010 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.