Specific code 2011 ICD-9-CM Diagnosis Code 309.9
Unspecified adjustment reaction
  • Short description: Adjustment reaction NOS.
  • ICD-9-CM 309.9 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 309.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2011 version of ICD-9-CM 309.9.
  • More recent version(s) of ICD-9-CM 309.9: 2012 2013 2014.
Disease Synonyms
  • Adjustment disorder
  • Adjustment disorder to medical therapy
  • Adjustment reaction to medical therapy
  • Adjustment reaction to medical treatment
Applies To
  • Adaptation reaction NOS
  • Adjustment reaction NOS
Convert to ICD-10-CM: 309.9 converts approximately to:
  • 2014 ICD-10-CM F43.20 Adjustment disorder, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 309.9:
  • Adaptation reaction (see also Reaction, adjustment) 309.9
  • Crisis
    • emotional NEC 309.29
      • acute reaction to stress 308.0
      • adjustment reaction 309.9
      • specific to childhood or adolescence 313.9
  • Disorder - see also Disease
    • adjustment (see also Reaction, adjustment) 309.9
      • with
        • anxiety 309.24
        • anxiety and depressed mood 309.28
        • depressed mood 309.0
        • disturbance of conduct 309.3
        • disturbance of emotions and conduct 309.4
  • Disturbance - see also Disease
    • situational (transient) (see also Reaction, adjustment) 309.9
  • Maladjustment
    • simple, adult (see also Reaction, adjustment) 309.9
    • situational acute (see also Reaction, adjustment) 309.9
  • Reaction
    • acute situational maladjustment (see also Reaction, adjustment) 309.9
    • adaptation (see also Reaction, adjustment) 309.9
    • situational (see also Reaction, adjustment) 309.9
      • acute, to stress 308.3
      • adjustment (see also Reaction, adjustment) 309.9
  • Situational
    • disturbance (transient) (see also Reaction, adjustment) 309.9
    • maladjustment, acute (see also Reaction, adjustment) 309.9
    • reaction (see also Reaction, adjustment) 309.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 309.9 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 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.