2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Injury And Poisoning 800-999 > Other And Unspecified Effects Of External Causes 990-995 > Effects Of Heat And Light 992.* > 2008 ICD-9-CM Diagnosis 992.5 Heat exhaustion unspecified  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 992.5 can be accessed here. An effect of excessive exposure to heat occurring commonly among workers in furnace rooms, foundries, etc., although it may occur from exposure to the sun's heat (SUNSTROKE). It is marked by subnormal temperature, with dizziness, headache, nausea, and sometimes delirium and/or collapse. It is distinguished from HEAT STROKE, in which the body temperature may be dangerously elevated. (Dorland, 27th ed) 992.5 is a specific code that can be used to specify a diagnosis 992.5 contains 3 index entries View the ICD-9-CM Volume 1 992.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. 992.5 also known as: Heat prostration NOS Index entries containing 992.5: Exhaustion, exhaustive (physical NEC) 780.79 heat 992.5 due to salt depletion 992.4 water depletion 992.3 Heat (effects) 992.9 exhaustion 992.5 anhydrotic 992.3 due to salt (and water) depletion 992.4 water depletion 992.3 Prostration 780.79 heat 992.5 anhydrotic 992.3 due to salt (and water) depletion 992.4 water depletion 992.3