Home > 2015 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 2015 ICD-9-CM Diagnosis Code 991.4
Immersion foot
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 991.4 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 991.4 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).
Convert to ICD-10-CM: 991.4 converts approximately to:
  • 2015/16 ICD-10-CM T69.029A Immersion foot, unspecified foot, initial encounter
Approximate Synonyms
  • Left immersion hand
  • Left trench foot
  • Right immersion hand
  • Right trench foot
Clinical Information
  • A condition of the feet produced by prolonged exposure of the feet to water. Exposure for 48 hours or more to warm water causes tropical immersion foot or warm-water immersion foot common in vietnam where troops were exposed to prolonged or repeated wading in paddy fields or streams. Trench foot results from prolonged exposure to cold, without actual freezing. It was common in trench warfare during world war i, when soldiers stood, sometimes for hours, in trenches with a few inches of cold water in them. (andrews' diseases of the skin, 8th ed, p27)
Applies To
  • Trench foot
ICD-9-CM Volume 2 Index entries containing back-references to 991.4:
  • Acrotrophodynia 991.4
  • Effect, adverse NEC
    • immersion, foot 991.4
    • reduced temperature 991.9
      • frostbite - see Frostbite
      • immersion, foot (hand) 991.4
      • specified effect NEC 991.8
  • Immersion 994.1
    • foot 991.4
    • hand 991.4
  • Maceration
    • wet feet, tropical (syndrome) 991.4
  • Stasis
    • foot 991.4
  • Syndrome - see also Disease
    • tropical wet feet 991.4
    • wet
      • brain (alcoholic) 303.9
      • feet (maceration) (tropical) 991.4
      • lung
  • Trench
    • foot 991.4
  • Tropical - see also condition
    • maceration feet (syndrome) 991.4
    • wet foot (syndrome) 991.4
  • Wet
    • feet, tropical (syndrome) (maceration) 991.4
 991.3 ICD9Data.com 991.5 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 991.4 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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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