Specific code 2012 ICD-9-CM Diagnosis Code 799.21
Nervousness
  • ICD-9-CM 799.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 799.21 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
  • You are viewing the 2012 version of ICD-9-CM 799.21.
  • More recent version(s) of ICD-9-CM 799.21: 2013 2014 2015.
Convert to ICD-10-CM: 799.21 converts directly to:
  • 2015/16 ICD-10-CM R45.0 Nervousness
Approximate Synonyms
  • Feeling nervous
Applies To
  • Nerves
ICD-9-CM Volume 2 Index entries containing back-references to 799.21:
  • Disturbance - see also Disease
    • nervous functional 799.21
  • Irritability 799.22
    • nervousness 799.21
  • Irritation
    • nervous 799.21
  • Nerves 799.21
  • Nervous (see also condition) 799.21
    • tension 799.21
  • Nervousness 799.21
  • Tension
    • nervous 799.21
  • Trouble - see also Disease
    • nervous 799.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 799.21 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.