Home > 2006 ICD-9-CM Diagnosis Codes > Injury And Poisoning 800-999 > Other And Unspecified Effects Of External Causes 990-995 > Effects of reduced temperature 991-
Specific code 2006 ICD-9-CM Diagnosis Code 991.9
Unspecified effect of reduced temperature
  • Short description: EFFECT REDUCED TEMP NOS.
  • ICD-9-CM 991.9 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 991.9 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 2006 version of ICD-9-CM 991.9.
  • More recent version(s) of ICD-9-CM 991.9: 2007 2008 2009 2010 2011 2012 2013 2014 2015.
Convert to ICD-10-CM: 991.9 converts approximately to:
  • 2015/16 ICD-10-CM T69.9XXA Effect of reduced temperature, unspecified, initial encounter
Approximate Synonyms
  • Effects of reduced temperature
Applies To
  • Effects of freezing or excessive cold NOS
ICD-9-CM Volume 2 Index entries containing back-references to 991.9:
  • Cold 460
    • effects of 991.9
      • specified effect NEC 991.8
    • excessive 991.9
      • specified effect NEC 991.8
    • exposure to 991.9
      • specified effect NEC 991.8
  • Congelation 991.9
  • Effect, adverse NEC
    • cold (temperature) (weather) 991.9
      • chilblains 991.5
      • frostbite - see Frostbite
      • specified effect NEC 991.8
    • reduced temperature 991.9
      • frostbite - see Frostbite
      • immersion, foot (hand) 991.4
      • specified effect NEC 991.8
  • Excess, excessive, excessively
    • cold 991.9
      • specified effect NEC 991.8
  • Exposure 994.9
    • cold 991.9
      • specified effect NEC 991.8
  • Freezing 991.9
    • specified effect NEC 991.8
  • Frozen 991.9
  • Temperature
    • cold, trauma from 991.9
  • Weather, weathered
    • effects of
      • cold NEC 991.9
        • specified effect NEC 991.8
      • hot (see also Heat) 992.9
 991.8 ICD9Data.com 992 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 991.9 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 2006 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
Free ICD-9-CM Codes
Site Information
Free ICD-10-CM/PCS Codes
Free HCPCS Codes